extensible product for dental treatment and method of applying an asset for oral treatment

专利摘要:
1/1 abstract "tape for the release of an asset for oral treatment and methods for the application of assets for oral treatment" the present invention relates to a tape of material for the application of an asset for oral treatment. the material tape includes an elastic-like structural film support layer including a re-stretchable mesh having a first region and a second region formed of substantially the same material composition, the first region providing a first resilient resilient force to a axial elongation applied, and the second region providing a second distinctive resistance force to an additionally applied axial elongation, thus providing at least two stages of resistance forces in use; and a composition for oral treatment arranged on the film, the composition for oral treatment includes an asset for oral treatment.
公开号:BR112015008666B1
申请号:R112015008666
申请日:2013-10-17
公开日:2020-04-07
发明作者:Jianqun Zhao Jean；Ngoc Nguyen Lan；Albert Sagel Paul
申请人:Procter & Gamble；
IPC主号:

专利说明:

Descriptive Report of the Invention Patent for EXTENSIBLE PRODUCT FOR DENTAL TREATMENT AND METHOD OF APPLICATION OF AN ASSET FOR ORAL TREATMENT
FIELD OF THE INVENTION [0001] The present disclosure relates to a material tape for the application of an oral treatment asset and the methods for applying oral treatment assets to the desired region of a user's mouth. More particularly, the present disclosure relates to an extensible or extensible tape of material and, optionally, to a release liner. Such systems and methods can be used, for example, for teeth whitening.
BACKGROUND OF THE INVENTION [0002] Teeth whitening and other procedures performed at home or in offices have become popular in today's culture. In the office, teeth whitening generally involves several visits to the dentist and the use of a rubber barrier to protect the patient's gums against bleaching agents. Outside the office, teeth whitening generally involves the use of a device or tray that is made in the dental office to fit the patient's teeth. The device is reused and therefore needs to be strong enough to withstand repeated handling, cleaning, filling, installation and use. Typically, a patient uses the device in periods of time when it is possible to avoid social contact.
[0003] Non-professional programs are also available for individuals interested in whitening their teeth using commercial products available in stores. Commercial products often provide a kit that includes a generic utensil and a bleach gel container. The obvious appeal is the lowest cost of
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2/80 program. The main disadvantage of this one-size-fits-all generic tool is the greater empty space between the internal walls of the tool and the teeth versus a professionally adjusted tool. Therefore, in order to ensure intimate contact of the bleaching gel and tooth surfaces, more bleaching gel is required. Furthermore, the less satisfactory fit means greater loss of bleaching gel on the gums, in the oral cavity and eventual ingestion. Since generic utensils do not fit the individual user, they are even more bulky in the mouth than the adjusted utensils and, thus, restrict social discourse during use.
[0004] A recognized consumer need is a low-cost oral treatment release system that is comfortable to use and can deliver a sufficient amount of a substance for oral treatment. In addition, a release system is required that does not require extensive handling for placement by the user to be sure of a satisfactory contact for optimal distribution. Furthermore, what is needed is a means of containing non-bulky assets that will allow the user to use the system during social discourse without interfering with the user's speech or appearance. A containment medium is also required that will protect the substance for oral treatment against erosion from contact with other oral surfaces and / or saliva.
[0005] To meet the need, at least in relation to teeth whitening in the office, tapes for whitening were developed. Exemplary tape release systems and tape usage methods are disclosed in US patents 6,551,579 B2 and 7,122,199 B2, both by Sagel et al. and assigned to The Procter & Gamble Company, the description of which is incorporated herein by reference. However, there is still a need for improvement since known strips do not easily provide customization
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3/80 for users with different sizes. As such, a release system that is customizable in size, that is, extensible, is also required to allow a user to cover the desired number of teeth, without the negative side effects that a user would be subjected to with an elastic material, such as a traction or displacement force. In addition, there is a need to provide an even more satisfactory and safer fit for ribbon-like release systems and / or to provide the user with a feedback associated with adjusting the device while it is used.
SUMMARY OF THE INVENTION [0006] In one embodiment, a material tape is provided for the application of an asset for oral treatment. The material tape includes an elastic-like structural film support layer including a re-stretchable mesh having a first region and a second region formed from substantially the same material composition, the first region providing a first resilient resilient strength to one axial elongation applied, and the second region providing a second distinctive resistance force to an additionally applied axial elongation, thus providing at least two stages of resistance forces in use; and a composition for oral treatment arranged on the film, the composition for oral treatment includes an asset for oral treatment. [0007] In another modality, an extensible product for dental treatment is provided. The extensible product for the treatment of teeth includes a support layer of structural film similar to elastic that has an average thickness of about 0.003 millimeter to about 0.127 millimeter (about 0.1 mil to about 5.0 mil), being whereas the film includes: from about 50% to about 90% by weight of the high density polyethylene film; and from about 10% to about 50% in
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4/80 weight of low density linear polyethylene film; and a composition for oral treatment arranged on the film, the composition for oral treatment includes: from about 50% to about 99.9% by weight of the composition of an adhesive polymer; and from about 0.1% to about 50% by weight of an oral treatment composition.
[0008] In another modality, an extensible product for dental treatment is provided. The extensible tooth treatment product includes a support layer; and a composition for oral treatment arranged on the support layer, the composition for oral treatment includes an asset for oral treatment. The extensible product for dental treatment exhibits a Young's modulus less than about 50 MPa, a breakage strain of at least 250% and a flow strain of at least about 30%.
[0009] In another embodiment, a method of releasing an asset for oral treatment for a plurality of adjacent teeth is provided. The method includes providing a tape of material that has a backing layer and a composition for oral treatment disposed on the backing layer, the composition for oral treatment includes an asset for oral treatment, and the material tape displays a Module Young's less than about 50 MPa, a breakage strain of at least 250% and a flow strain of at least about 30%; adjusting the size of the material tape so that the tape is of sufficient size to fit individually to a plurality of adjacent user teeth when placed against the teeth; and applying the material tape to the plurality of adjacent teeth.
[00010] In another modality, an extensible product for dental treatment is provided. The extensible product for dental treatment
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5/80 includes a support layer; and a composition for oral treatment arranged on the support layer, the composition for oral treatment includes an asset for oral treatment. The extensible dental treatment product exhibits a Young's modulus less than about 50 MPa, an initial detachment force greater than about 0.05 N, and less than about 0.05 g of material remaining after an initial detachment test , as measured according to a Tape Removal Test.
[00011] In yet another embodiment, a method of releasing an asset for oral treatment for a plurality of adjacent teeth is provided. The method includes providing a tape of material that has a backing layer and a composition for oral treatment disposed on the backing layer, the composition for oral treatment includes an asset for oral treatment, and the material tape displays a Module Young's pressure less than about 50 MPa, an initial detachment force greater than about 0.05 N, and less than about 0.05 g of material remaining after an initial detachment test, 1 as measured according to a Test Tape Removal; adjusting the size of the material tape so that the tape is of sufficient size to fit individually to a plurality of adjacent user teeth when placed against the teeth; and applying the material tape to the plurality of adjacent teeth.
[00012] These and other features, aspects and advantages of specific modalities of the present invention will become apparent to those skilled in the art from reading this description.
BRIEF DESCRIPTION OF THE DRAWINGS [00013] Although the specification ends with claims that specifically mark and claim the present invention differently, it is believed that it will be better understood from the description, below, of preferred modalities, taken into account
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6/80 combination with the accompanying drawings, in which similar reference numbers are used to designate identical elements, where: [00014] Figure 1 is a perspective view of a material strip including a support layer and a composition for oral treatment arranged thereon according to one or more modalities illustrated and described in this document;
[00015] Figure 2 is a planar view of a strip of material that has a substantially trapezoidal shape according to one or more embodiments illustrated and described in this document;
[00016] Figure 3 is a planar view of a strip of material that has a substantially trapezoidal shape with step-shaped sides according to one or more embodiments illustrated and described in this document;
[00017] Figure 4 is a planar view of a tape that has a substantially rectangular shape with step-shaped sides according to one or more modalities illustrated and described in this document;
[00018] Figure 5 is a planar view of a ribbon that has a substantially rectangular shape with notched sides according to one or more embodiments illustrated and described in this document;
[00019] Figure 6 is a planar view of a ribbon that has a rectangular shape with two slits according to one or more modalities illustrated and described in this document;
[00020] Figure 7 is a planar view of a ribbon that has a rectangular shape with two transverse slits according to one or more modalities illustrated and described in this document;
[00021] Figure 8 is a planar view of a ribbon that has a rectangular shape with two holes according to one or more modalities illustrated and described in this document;
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7/80 [00022] Figure 9 is a cross-sectional view of the six front teeth of a user according to one or more modalities illustrated and described in this document;
[00023] Figure 10 is a cross-sectional view of a tape placed over the six front teeth of a user before being folded over the back sides of the user's teeth according to one or more modalities illustrated and described in this document;
[00024] Figure 11 is a plan view of a SELF Structural Elastic-like Film blanket / support layer that has a re-tensionable mesh, according to one or more modalities illustrated and described in the present document;
[00025] Figure 11A is a segmented perspective illustration of the SELF blanket / support layer of Figure 11 in a non-stressed condition;
[00026] Figure 11B is a segmented perspective illustration of the SELF blanket / support layer of Figure 11 in a stressed condition;
[00027] Figure 11C is a segmented perspective illustration of the SELF blanket / support layer of Figure 11 in a stressed condition;
[00028] Figure 12 is a graph of the strength of resistance versus the percentage elongation that compares the behavior of the SELF mat / support layer as shown in Figure 11 with a mat other than SELF / support layer otherwise identical.
[00029] Figure 13 is a simplified side elevation view of an example apparatus used to form the SELF blanket / support layer according to one or more modalities illustrated and described in this document;
[00030] Figure 14 is a plan view of the plates
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8/80 opposite correspondents of the example apparatus of Figure 13 deposited side by side, with their corresponding surfaces exposed;
[00031] Figure 15 is a simplified side elevation view of a static press used to form the SELF blanket / support layer according to one or more modalities illustrated and described in this document;
[00032] Figure 16 is a simplified side elevation view of a continuous dynamic press used to form the SELF blanket / support layer according to one or more modalities illustrated and described in this document;
[00033] Figure 17 is a simplified illustration of an example apparatus used to form the SELF blanket / support layer according to one or more of the modalities illustrated and described in this document;
[00034] Figure 18 is an illustration of another embodiment of an apparatus used to form the SELF blanket / backing layer according to one or more embodiments illustrated and described in this document;
[00035] Figure 19 is an illustration of yet another modality of an apparatus used to form the SELF blanket / backing layer according to one or more of the modalities illustrated and described in this document; Figure 20 is a perspective view of an embodiment of a strip of material that includes a support layer, a composition for oral treatment arranged on it and a release liner according to one or more embodiments illustrated and described in this document. ;
[00036] Figure 21 is a perspective view of an embodiment of a strip of material that includes a support layer, a composition for oral treatment arranged on it, a
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9/80 release liner and a mesh liner, according to one or more embodiments illustrated and described in this document;
[00037] Figure 22 is a plan view of an embodiment of a tape material before tensioning;
[00038] Figure 23 is a plan view of an embodiment of a tensioned material strip;
[00039] Figure 24 is an image of a strip of material before and after tensioning;
[00040] Figures 25A to D are an image of a strip of material in various stages of stretching;
[00041] Figure 26 illustrates the elastic hysteresis behavior of several test strips;
[00042] Figure 27 is a perspective view of a detachment tester according to an embodiment illustrated and described in the present document;
[00043] Figure 28A is a perspective view of a rectangular bar combined according to an embodiment illustrated and described in the present document;
[00044] Figure 28B is a top view of a first stage of assembling a tape support apparatus according to an embodiment illustrated and described in the present document;
[00045] Figure 28C is a top view of a second step of assembling a tape support apparatus according to an embodiment illustrated and described in this document;
[00046] Figure 28D is a top view of a third stage of assembling a tape support apparatus according to an embodiment illustrated and described in this document;
[00047] Figure 28E is a top view of a fourth stage of assembling a tape holding device according to a
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10/80 modality illustrated and described in this document;
[00048] Figure 29 is a perspective view of the detachment tester and the tape holding device before carrying out an detachment test according to an embodiment illustrated and described in the present document; and [00049] Figure 30 is a perspective view of the detachment tester and the tape holding apparatus during an detachment test according to an embodiment illustrated and described in this document.
DETAILED DESCRIPTION OF THE INVENTION [00050] The abbreviation cm, for use in the present invention, means centimeter. The abbreviation mm, for use in the present invention, means millimeter.
[00051] As used here, the term narrowed support layer refers to a support layer for a strip of material that has been constricted in at least one dimension by applying a tensioning force in a direction that is perpendicular to the desired direction of narrowing.
[00052] As used here, the term narrowing percentage refers to the ratio determined by measuring the difference between the dimension that has not narrowed and the stabilized dimensions that have suffered narrowing of the support layer in the direction of narrowing and then dividing that difference by the dimension that did not suffer narrowing of the support layer, then multiplying by 100.
Material tape [00053] The oral asset release device can be called a material tape, a tape or any other suitable name. None of these terms, however, is intended to limit the release device to any size, shape, composition, material,
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11/80 number of layers, thickness or other particular characteristics. Instead, the term tape is intended to make general reference to a length of material used to release an asset for oral treatment to a portion of the user's mouth.
[00054] The tape can have a shape that is adapted to fit a user's teeth. The tape can be designed to cover any one or more teeth. For example, the tape can substantially cover the front side of at least four front teeth of a user and two canine teeth, or it can cover a greater or lesser number of teeth when used. The term substantially means that at least half of the frontal tooth surface is covered. The tape can cover the entire surface of the front tooth and can also cover portions of the gums adjacent to the teeth. For teeth whitening tapes, the tape will generally begin to cover at the point where the surface of the teeth intersects the gums and extends in the opposite direction to the gums to cover all or a portion of the individual tooth surfaces.
[00055] The tape can be folded over the ends and on the back sides of one or more of the teeth. In certain embodiments, the shape of the tape will allow the canine tips not to be covered. The term "fold over the ends" means that the tape covers or wraps the front side of the tooth over the end and over the back side of the tooth. Depending on the size of the tape, the entire posterior side of the tooth, including the adjacent gum, may be covered or only a portion of the posterior side of the tooth.
[00056] The format of the tape can be any format that allows it to fit the user and work with the desired purpose. For example, the tape can be a substantially trapezoidal shape. The term substantially trapezoidal is used to refer to any shape that has four general sides, with two sides
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12/80 that are generally parallel. This can result from many shapes, including those in which one side is convex and the opposite side is concave. The arched shape can help to reduce the fold of the tape and allow the tape to settle more smoothly along the surfaces of the teeth. The tape may be substantially rectangular in shape. This is generally used to refer to a format with four sides, where two sides are almost parallel. The widespread use of the term parallel is included when the sides are arched, not straight and generally not perpendicular. Alternatively, the ribbon can have any shape, such as round or oval. The tape can also be shaped with any number of sides. The format of the tape is not intended to be symmetrical, but it can be if desired.
[00057] Either side or edge of the tape can be notched, stepped or arched. 'Notched' means that there is a recess, indentation or curve of some kind. Step format means that the side is not straight and may contain one or more steps. The tape may also contain cracks, transverse cracks, holes, perforations or any other suitable formation that allows the canines to protrude through or be avoided by the material tape.
[00058] Each ribbon can include a fold line. The fold line is defined as the part of the tape where the ends of the teeth meet the tape when the tape is folded or wrapped over the ends. This line can be from the point at which a recess, step or notch on one side extends into the tape as far as the other recess, step or notch extends into the most distant side on the opposite side. The fold line will generally extend from one side of the tape to another parallel side and along the longest part of the tape. The fold line can be self-adjusting depending on the size and shape of the tape. With a trapezoidal tape, the fold line
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13/80 will be determined based on the placement of the tape on a user's teeth.
[00059] The tape may have rounded corners. Rounded corners are defined as having no sharp angles or points. The tape size can be any suitable size and can be designed to meet different factors, including the number of teeth to be targeted, the size of the teeth and the user's personal preference. In general, the length of the tape is about 2 cm to about 12 cm, but it can be about 3 cm to about 10 cm, about 4 cm to about 6 cm or any desired length. If the tape is stepped on the sides or trapezoidal, the longest side of the material tape can be about 3 cm to about 12 cm, about 3.1 to about 10 cm, about 3 , 5 cm to about 8 cm, from about 4 cm to about 8 cm or any other suitable length. The shortest side can be about 0.1 cm to about 12 cm, about 0.5 cm to about 8 cm, about 1 cm to about 5 cm, about
1.5 cm to about 3 cm or any other suitable size. The width of the material tape will also depend on many factors, including whether or not the material tape wraps completely around the teeth and covers part or all of the front and back surfaces of the tooth. The width can have any suitable measurement, but it has been found to work satisfactorily in certain modalities when it is about 0.5 cm to about 4 cm or about 1 cm to about 2 cm.
[00060] One or more layers of the tape may comprise materials such as polymers, natural and synthetic fabrics, non-woven fabrics, foil, paper, rubber and combinations thereof. Layers, if any, can include one or more materials. The tape can be substantially impermeable, permeable and / or water-soluble. The tape can include any materials with the desired flexural stiffness and compatibility with the assets to be used. Materials can
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14/80 comprise a single polymer or a mixture of polymers. Suitable polymers include, but are not limited to, polyethylene, polypropylene, polyvinylacetate, polyethyl vinylacetate, polyethylvinyl alcohol, polyurethane, polyesters like Mylar® produced by DuPont, fluoroplastics like Teflon® produced by DuPont, biodegradable polymers, renewable polymers and combinations of themselves. It was found that the tape was especially suitable when it was less than about 1 mm thick, less than about 0.5 mm thick and more than about 0.001 to about 0.3 mm thick, although other thicknesses are possible.
[00061] Flexural hardness is a material property that is a function of a combination of material thickness, width and elasticity modulus. Below is a test method for measuring the stiffness of the material tape. It determines the flexural strength of a sample using an effort meter attached to the end of a horizontal bar. The opposite end of the bar exerts pressure along a strip of the sample, to force a portion of it in a vertical groove on a horizontal platform on which the said sample is placed. A microamperimeter, connected by wire to the effort meter, is calibrated in Newtons (grams) of deflection force. The sample stiffness is read directly from the microammeter and expressed in Newtons (grams) per centimeter of sample tape width. In one embodiment, the material tape has a flexural hardness less than about 0.05 Newton / cm (about 5 grams / cm) as measured on a Handle-O-Meter, model No. 211-300, available from Thwing-Albert Instrument Co. of Philadelphia, PA, USA according to the ASTM D2923-95 test method. The material tape can have a flexural hardness less than about 0.04 Newton / cm (about 4 grams / cm), less than about 0.04 Newton / cm (about 3 grams / cm), or about 0.001 Newton / cm a
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15/80 about 0.01 Newton / cm (about 0.1 gram / cm to about 1 gram / cm). In general, it is desired that the flexural hardness of the material is substantially constant and does not change significantly during normal use. For example, it may be desirable that the tape does not need to be hydrated in order for it to achieve low flexural hardness in the ranges specified above.
[00062] This relatively low hardness allows the tape to be laid over the contoured surfaces of teeth with very little force being exerted. That is, conformity to the user's wedding curvature and the gaps between adjacent teeth is maintained due to the fact that there is little residual force on the material strip to return it to its substantially flat shape. The flexibility of the tape allows the material tape to contact the adjacent soft tissue for an extended period of time without physical irritation. The tape does not require conformation by pressing it against the teeth. [00063] The tape is held in place on a plurality of adjacent teeth by means of at least partially an adhesive composition discussed in more detail below. The viscosity and general stickiness of the adhesive composition causes the material tape to bond adhesively to a plurality of adjacent teeth without substantially sliding under the potential friction of the lips, tongue and other soft tissue that rubs against the backing layer during mouth movements associated with speech, drinking, etc. However, this adhesion to the teeth is low enough to allow the tape to be easily removed by the user by detaching the tape using a user's finger or fingernail. The tape is easily removable from the surfaces of the teeth without the use of an instrument, a chemical solvent or undue friction. Chemical solvents include any organic solvent commonly used in oral care products such as alcohol and other safe solvents such as water,
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16/80 that could be used to dilute the gelling agent. Undue friction is described as any type of rubbing with an individual's finger or a soft instrument, such as cotton balls, wads or gauze pads.
[00064] A peel force of about 0.01 Newton to about 14.71 Newtons (about 1 gram to about 1500 grams) for a tape width of 1.5 cm (approximately 9.81 Newtons / cm (approximately 1,000 grams / cm) is all that is required in certain modalities. The detachment force can be about 0.05 Newton to about 12.26 Newtons (about 5 grams to about 1,250 grams) or about 0.01 Newton to about 9.81 Newtons (about 10 grams to about 1,000 grams). Low detachment force is desired for consumer handling purposes. The low detachment force can be made possible by using a non-aggressive gel substance. This works specifically well when the flexural hardness of the tape is low. The adhesion of a more rigid tape would have to be greater in proportion to the tape's hardness in order to prevent the tape from returning to its flat condition and being pulled away from the contoured surface of a plurality of teeth.
[00065] Now with reference to the drawings and, more particularly, to Figure 1, a modality is shown, which is generally indicated as 810. Modality 810 represents a strip of material. The material tape 810 can generally comprise a backing layer 812 and an adhesive composition 814. In another embodiment, the material tape can also include a release liner.
[00066] As shown in Figure 2, in one embodiment, the material tape 10 can be substantially trapezoidal in shape. In one embodiment, the tape 10 has a first side 11 and a second side 12, a third side 13 and a fourth side 14. The first side 11 and the second side 12 can have straight sides that slope from the fourth side 14
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17/80 for the third side 13. The third side 13 can be concave and shorter than the fourth side 14. The fourth side 14 can be convex. The fourth side 14 can be placed near the bottom edge of the front side of a user's bottom set of front teeth. Alternatively, if the tape is used on the user's upper set of teeth, the fourth side 14 can be placed along the upper front side of the user's upper set of front teeth. A fold line 15 of the form 10 extends from the first side 11 to the second side 12. The fold line 15 can be located closer to the third side 13 or to the fourth side 14. The fold line 15 can be determined by the size of the user's teeth and by placing the tape on the user's teeth. The third side 13 can be along the back side of a user's teeth after the tape 10 is folded along the fold line 15.
[00067] As shown in Figure 3, a mode 20 can be substantially trapezoidal in shape with step-shaped sides. Mode 20 has a first side 21, a second side 22, a third side 23 and a fourth side 24. The third side 23 can be concave and shorter than the fourth side 24. The fourth side 24 can be convex. The first side 21 and the second side 22 can be stepped sides. The fold line 15 extends from the corners 26 and 27 of the step on the first side 21 and the second side 22, respectively. Mode 20 can alternatively be described as two substantially trapezoidal shapes placed on top of each other. The top trapezoid is formed by the third side 23, the second side 22 from its corner 27 to the third side 23, the fold line 25 and the first side 21 from its corner 26 to the third side 23. The bottom trapezoid is formed by the fold line 25, the second side 22 from its corner 27 to the fourth side 24, the fourth side 24 and the first side 21 from its corner 26 to the fourth side 24.
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18/80 [00068] Figure 4 illustrates an alternative embodiment 30. The material tape can be substantially rectangular in shape with step-shaped sides. Mode 30 has a first side 31, a second side 32, a third side 33 and a fourth side 34. The first side 31 and the second side 32 can be stepped sides. Fold line 35 can extend from corners 36 and 37 of the step on the first side 31 and the second side 32, respectively. Mode 30 can also be described as two rectangles placed on top of each other. The top rectangle can be formed by the third side
33, by the second side 32 of its corner 37 to the third side 33, by the fold line 35, and by the first side 31 of its corner 36 to the third side 33. This top rectangle can alternatively be described as a flap that fits on the back sides of the user's teeth. The bottom rectangle is formed by the fold line 35, by the second side 32 of its corner 37 until the fourth side 34, by the fourth side
34, and from the first side 31 from its corner 36 to the fourth side 34.
[00069] Fold line 35 will usually be placed over the tips of a user's teeth allowing the tape to fold over the front and back sides of the user's teeth. The tape can be placed in such a way that the two canine teeth of the user are just outside the corners 36 and 37. The fourth side 34 can be located near the bottom edge of the front side of the lower set of front teeth of a user. Alternatively, if the tape is used on the user's upper set of teeth, the fourth side 34 can be placed along the top of the front side of the user's upper set of front teeth. The third side 33 can be along the back side of a user's teeth.
[00070] Figure 5 details a material ribbon with a substantially rectangular shape with notched sides. Mode 40 has a first side 41, a second side 42, a third side 43 and a
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19/80 fourth side 44. The third side 43 and the fourth side 44 can be substantially straight sides and have the same length. In one embodiment, the first side 41 and the second side 42 have notches 46 and 47, respectively, which allow the tips of the canine teeth not to be covered when the tape is placed over the user's teeth. Fold line 45 extends from notch 46 on the first side 41 to notch 47 on the second side 42. Notches 46 and 47 can have diagonal V shapes as shown. The notches can be of any shape, including rectangular, semicircles, etc. that allows the tips of the canine teeth not to be involved by modality 40.
[00071] Modes 50, 60 and 70 are illustrated by Figures 6, 7 and 8, respectively. The material tape of modalities 50, 60 and 70 has a substantially rectangular shape with rounded corners. Each modality contains two indentations that allow the canine teeth to protrude when the tape is placed on a user's tooth. Figure 6 illustrates where the recesses are straight slits 56 and 57. Slits 56 and 57 extend from the outer edge of mode 50 to an internal point. Fold line 55 extends between slits 56 and 57. Figure 7 shows slits 66 and 67 which are transverse slits. Transverse slits 66 and 67 are located within mode 60. Fold line 65 extends from transverse slot 66 to transverse slot 67. Modality 70 in Figure 8 illustrates holes 76 and 77 in the tape. The holes 76 and 77 can be any size that is sufficient for the tips of the canines to protrude. Fold line 75 extends between holes 76 and 77.
[00072] Figure 9 shows the corresponding top 81 and front 82 view of a user's bottom set of the six front teeth. Top view 81 illustrates the general arcuate shape found in the six front teeth. The two canine teeth 83 and 84 are located
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20/80 on opposite sides of the four front teeth 85. No additional posterior teeth, such as molars, that are located close to each of the canine teeth are shown. The front view 82 illustrates the general shapes, including the tips, of the four front teeth 85 and the canine teeth 83 and 84.
[00073] Figure 10 shows the front view 82 of the six front teeth of a user shown in Figure 8 with the tape illustrated by modality 20 of Figure 3. Modality 20 is shown placed along the teeth, but not yet bent over the teeth. teeth. As illustrated, the fourth side 24 is placed along the bottom portions of the four front teeth 85 and two canine teeth 83 and 84. Fold line 25 reaches the tips of the four front teeth 85 and allows the tips of the canine teeth 83 and 84 are exposed. Canine teeth 83 and 84 protrude at corners 26 and 27 of the steps. The third side 23 will subsequently be folded over the rear side of the four front teeth 85.
Support layer [00074] As noted above, the tape can include one or more layers of the same or different materials. In certain embodiments, the tape includes a backing layer. The support layer can serve as a protective barrier to prevent, substantially avoid or reduce the amount of saliva in contact with the substance for oral treatment and leaching and / or erosion of the substance from the surface of the teeth by the lips, tongue and another user's soft tissue. For some cases, it may be desirable for the substance to act on the tooth surface for an extended period of time, from several minutes to a few hours. Thus, it may be desirable to influence or control leaching and / or erosion.
[00075] The backing layer can be formed by several of the film-making processes known in the art. The layer of
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The support can be a polyethylene made from a blow process or a molding process. Processes such as extrusion and other processes are also feasible.
[00076] Although the support layer can be constructed from a number of different extensible materials as is known in the art, the support layer, for reasons of performance and cost, in one example, can be constructed from a film mat structural similar to elastic (SELF). The term blanket refers, in this document, to a sheet-shaped material that comprises a single layer of material or a laminate of two or more layers. In other embodiments, additional forming means can be used to deform a support layer forming a three-dimensional structure, for example, ring lamination, micro-SELF and formation of openings by rotating knife (RKA).
[00077] Each of the four forming means presented in the present invention are presented as comprising a pair of meshed cylinders, typically steel cylinders with meshed teeth or grooves and grooves. However, it is considered that other means can be used to obtain the formation, such as the deformation cylinder and cord arrangement presented in US 2005/0140057, published on June 30, 2005. Therefore, any description of a pair of cylinders in the the present invention is considered equivalent to a cylinder and a cord, and a claimed arrangement citing two meshed cylinders is considered equivalent to a meshed cylinder and a cord, said cord functioning like the coupled ridges of a meshed cylinder. In one embodiment, the meshed pair of cylinders of the present invention can be considered as equivalent to a cylinder and a meshed element, which can be another cylinder, a cord, a plurality of strands, a mat, a malleable mat or belts. Similarly, although the description of four means of
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22/80 formation is illustrated in this document, other training technologies can also be used, such as curling, narrowing / consolidation, corrugation, embossing, button rupture, hot pin punching and the like. The forming processes known as ring lamination, micro-SELF and RKA are further disclosed in US patent publication No. 2008/0217809, which is incorporated herein by reference. [00078] The first forming means for deforming a support layer according to the present description is a process commonly called SELF or SELF forming process. Figure 11 shows an embodiment of a SELF 200 blanket of the present disclosure constructed from a single layer of formed polymeric material. The SELF 200 blanket is shown in its non-stressed condition. The blanket has two central lines, a longitudinal central line, l, and a transverse or lateral central line, t, which is generally perpendicular to the longitudinal central line. In one embodiment, the mat can be comprised substantially of linear low density polyethylene (LLDPE) although it can also be comprised of other polyolefins such as polyethylene including low density polyethylene (LDPE), ultra low density polyethylene (ULDPE), high polyethylene density (HDPE) or polypropylene and / or mixtures of them from the above materials or other materials. Examples of other suitable polymeric materials include, but are not limited to, polyester, polyurethanes, compostable or biodegradable polymers and breathable polymers.
[00079] The mass density of high density polyethylene can be in the range of about 0.93 to about 0.97 g / cm ³ . Although the density of HDPE is only marginally higher than that of LDPE, HDPE has little branching, providing stronger intermolecular forces and tensile strength than LDPE. THE
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23/80 difference in resistance exceeds the difference in density, giving HDPE a higher specific resistance. It is also more rigid and more opaque and can withstand somewhat higher temperatures (120 ° C / 248 ° F for short periods, 110 ° C / 230 ° F continuously). HDPE, unlike polypropylene, cannot withstand the autoclave conditions normally required. The lack of branching is ensured by an appropriate choice of catalyst (eg Ziegler-Natta catalysts) and reaction conditions. HDPE contains the chemical elements carbon and hydrogen. [00080] LDPE is defined by a density range of about 0.910 to about 0.940 g / cm ³ . It is not reactive at room temperatures, except for strong oxidizing agents and some solvents cause swelling. It can withstand temperatures of 80 ° C continuously and 95 ° C for a short period. Made in translucent or opaque variations, it is very flexible and hard but breakable. LDPE has more branching (in about 2% of carbon atoms) than HDPE, so its intermolecular forces (attraction induced by an instantaneous dipole dipole) are weaker, its tensile strength is lower and its resilience is higher. In addition, since its molecules are compacted less tightly and less crystalline due to the side ramifications, its density is lower. LDPE contains the chemical elements carbon and hydrogen.
[00081] LLDPE is a substantially linear polymer (polyethylene), with significant numbers of short branches, commonly produced by copolymerizing ethylene with longer chain olefins. LLDPE differs structurally from conventional LDPE due to the absence of long chain branching. The linearity of LLDPE results from the different LLDPE and LDPE manufacturing processes. In general, LLDPE is produced at lower temperatures and pressures by means of copolymerization of ethylene and such
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24/80 higher alphaolefins such as butene, hexene or octene. The copolymerization process produces an LLDPE polymer that has a narrower molecular weight distribution than conventional LDPE and, in combination with the linear structure, significantly different rheological properties.
[00082] In another embodiment, the mat may comprise an extensible polymer at a temperature of about 0 ° C to about 50 ° C. Extensible polymers include, but are not limited to, polymeric materials that have a percentage of elongation / stress at break greater than about 50% in the direction of the machine and in another modality, that have a percentage of elongation / stress at break greater than about 100% and a Young's modulus less than about 2,500 MPa in the direction of the machine, in yet another modality, which have a percentage of elongation / stress at break greater than about 100% and a Young's modulus less than about 2,000 MPa in the direction of the machine, in yet another modality, which have a percentage of elongation / stress at break greater than about 100% and a Young's modulus less than about 1,000 MPa in the direction of the machine and, in yet another modality, that have a percentage of elongation / stress at break greater than about 100% and a Young's modulus less than about 500 MPa in the machine direction.
[00083] The elongation / stress percentage at break is the amount of stretch the film is subjected to before the break point. Young's modulus and elongation / stress percentage at break can be measured on a tensile testing machine using the standard test method ASTM D 882 — Thin Plastic Lamination Tensile Tests.
[00084] Examples of backing layer compositions according to the present disclosure are shown in Table 1.
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25/80
Table 1 - Composition of support layers (weight percent)
ExampleNo. HDPE Grade (%) LLDPE Grade (%) Thickness (mm (thousand)) Module ofYounq * (MPa) Deformation @ Break% 1 EquistarL5005 90 ExxonL1001.32 10 0.009-0.35 1494 154 2 EquistarL5005 90 LyondellB asellGA501022 10 0.028-1.1 495 458 3 EquistarL5005 90 LyondellB asellGA501023 10 0.018-0.7 587 345 4 EquistarL5005 90 LyondellB asellGA501024 10 0.009-0.35 981 251 5 EquistarL5005 80 LyondellB asellGA501025 20 0.028-1.1 397 478 6 EquistarL5005 80 LyondellB asellGA501026 20 0.018-0.7 486 385 7 EquistarL5005 80 LyondellB asellGA501027 20 0.009-0.35 688 254 8 EquistarL5005 70 LyondellB asellGA501028 30 0.028-1.1 362 485 9 EquistarL5005 70 LyondellB asellGA501029 30 0.018-0.7 381 365 10 EquistarL5005 70 LyondellB asellGA50103 0 30 0.009-0.35 654 255 11 EquistarL5005 60 LyondellB asellGA501031 40 0.018-0.7 377 404 12 EquistarL5005 60 LyondellB asellGA501032 40 0.009-0.35 544 254 13 EquistarL5005 50 LyondellB asellGA501033 50 0.018-0.7 280 415 14 EquistarL5005 50 LyondellB asellGA501034 50 0.009-0.35 460 249 15 EquistarL5005 70 ExxonL3001.32 30 0.018-0.7 478 488
* Machine Direction [00085] With reference to Figures 11 and 11 A, the SELF blanket includes a re-stretchable network of different regions. As used here, the term retensible network refers to an interconnected and interrelated group of regions that have the capacity to be expanded to some useful degree in a predetermined direction that provides the SELF blanket with a
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26/80 elastic-like behavior in response to the applied and subsequently released stretching. The stretch mesh includes at least a first region 204 and a second region 206. The SELF blanket 200 includes a transitional region 205 that is at the interface between the first region 204 and the second region 206. The transitional region 205 will display similarly, the complex combinations of behavior of the first region and the second region. It is recognized that several modalities will have transitional regions, however, the present disclosure is largely defined by the behavior of the blanket material in the distinct regions (for example, the first region 204 and the second region 206). Therefore, the following description is related to the behavior of the blanket material in the first regions and in the second regions only, since it is not significantly dependent on the complex behavior of the blanket material in the transitional regions 205.
[00086] The SELF 200 blanket has a first surface and a second opposite surface. In one embodiment, as shown in Figures 11 and 11A, the stretch network includes a plurality of first regions 204 and a plurality of second regions 206. The first regions 204 have a first geometry axis 208 and a second geometry axis 209, the the first geometry axis 208 can be longer than the second geometry axis 209. The first geometry axis 208 of the first region 204 is substantially parallel to the longitudinal geometry axis of the SELF mat 200, while the second geometry axis 209 is substantially parallel to the transverse geometric axis of the SELF 200 blanket. In one embodiment, the second geometry axis of the first region, (ie, the width of the first region), is about 0.025 cm to about 1.27 centimeters (about 0.01 inch to about 0.5 inch) and, in another embodiment, from about 0.076 centimeter to about 0.635
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27/80 centimeter (about 0.03 inch to about 0.25 inch). The second regions 206 have a first geometry axis 210 and a second geometry axis 211. The first geometry axis 210 is substantially parallel to the longitudinal geometry axis of the SELF blanket 200, while the second geometry axis 211 is substantially parallel to the transverse geometric axis of the blanket of SELF 200. In another embodiment, the second geometry axis of the second region, (ie the width of the second region), is about 0.025 cm to about 5.08 centimeters (about 0.01 inch to about 2.0 inches) and, in another embodiment, from about 0.318 centimeters to about 2.54 centimeters (about 0.125 inches to about 1.0 inches). In the embodiment of Figure 11, the first regions 204 and the second regions 206 are substantially linear, extending continuously in a direction substantially parallel to the longitudinal geometric axis of the SELF 200 mat.
[00087] The first region 204 has an elastic module E1 and a cross-sectional area A1. The second region 206 has an elastic module E2 and a cross-sectional area A2.
[00088] In the illustrated embodiment, a portion of the SELF 200 mat has been formed so that the SELF 200 mat exhibits a resistance force along a geometric axis which, in the case of the illustrated embodiment, is substantially parallel to the longitudinal geometric axis of the SELF blanket, when subjected to an axial elongation applied in a direction substantially parallel to the longitudinal geometric axis. As used here, the term formed (a) refers to the creation of a desired structure or geometry on the SELF mat that will substantially retain the desired structure or geometry when it is not subjected to any stretching or externally applied force, i.e. , training regions. A SELF blanket of the present disclosure is comprised of at least one
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28/80 the first region and a second region, the first region being visually distinct from the second region. As used here, the term visually distinct refers to features of the SELF mat material that are readily discernible to the naked eye when the SELF mat material or objects incorporating that SELF mat material are subjected to normal use.
[00089] Methods for forming SELF mat materials include, but are not limited to, embossing by means of corresponding plates or cylinders, thermoforming, high pressure hydraulics or casting. Although the entire portion of the SELF 200 mat has undergone a forming operation, the present disclosure may also include subjecting only a portion of it, for example, a portion of a backing layer.
[00090] In an embodiment shown in Figures 11 and 11A, the first 204 regions are substantially flat. That is, the material within the first region 204 is in substantially the same conditioning before and after the SELF 200 mat is subjected to the forming step. The second regions 206 include a plurality of protruding rib-like elements 214. The rib-like elements 214 can be embossed, trimmed or a combination thereof. The rib-like elements 214 have a first or main geometric axis 216 that is substantially parallel to the transverse geometric axis of the SELF 200 mat and a second or secondary geometric axis 217 which is substantially parallel to the longitudinal geometric axis of the SELF 200 mat. first geometric axis 216 of the rib-like elements 214 is at least equal to, and, in one example, longer than the second geometric axis 217. In one embodiment, the ratio of the lengths of the first geometric axis 216 to the second axis
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Geometric 29/80 217 is at least about 1: 1, or greater, and in another embodiment, at least about 2: 1 or greater.
[00091] The rib-like elements 214 in the second region 216 can be separated from each other by unformed areas, areas that are essentially not embossed or trimmed, or simply formed as spacing. In one embodiment, the rib-like elements 214 are adjacent to each other and are separated by an unformed area less than 0.25 centimeter (0.10 inch) as measured perpendicular to the main geometric axis 216 of the rib-like element 214 and, in one embodiment, the rib-like elements 214 are contiguous, having no unformed areas between them.
[00092] What makes the SELF mat particularly well suited for use as a release system including a material strip is that it exhibits a substantially less modified Poisson side contraction effect than that of an identical non-matted mat. otherwise formed, with similar material composition. As used here, the term Poisson's lateral contraction effect describes the lateral contraction behavior of a support material that is being subjected to an applied stretch. The Poisson Lateral Contraction Effect (PLCE) is calculated using the following formula:
PLCE = | h'2 - h ^; 1 wl '72 ^ 71 [00093] Where w2 = the width of the sample under an applied longitudinal elongation, w1 = the original width of the sample, I2 = the length of the sample under an applied longitudinal elongation, 11 = the original length of the sample (useful length).
[00094] In one modality, the Poisson side contraction effect
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30/80 of the SELF blanket of the present disclosure is less than about 0.8 when the SELF blanket is subjected to about 25% elongation. In another modality, the SELF mat exhibits a Poisson lateral contraction effect less than about 1.0 when the SELF mat is subjected to about 50 or even 100% elongation. The Poisson side contraction effect of the tapes of the present disclosure is determined by the amount of blanket material that is occupied by the first and second regions, respectively. As the area of the SELF blanket material occupied by the first region increases, the Poisson's lateral contraction effect also increases. Conversely, as the SELF blanket material area occupied by the second region increases, the Poisson side contraction effect decreases. In one embodiment, the percentage area of the SELF blanket material occupied by the first region is from about 2% to about 90% and, in another embodiment, from about 5% to about 50%.
[00095] Prior art blanket materials that have at least one layer of an elastomeric material will, in general, have a great Poisson side contraction effect, that is, they will narrow as they stretch in response to an applied force . The SELF blanket materials of the present disclosure can be designed to moderate, if not substantially eliminate, the Poisson side contraction effect.
[00096] For the SELF blanket 52, the applied axial elongation direction, D, indicated by arrows 220 in Figure 11, is substantially perpendicular to the first geometric axis 216 of the rib-like elements 214. The rib-like elements 214 have the ability to unfold or deform geometrically in a direction substantially perpendicular to its first geometry axis 216 to allow extension in the SELF 200 mat.
[00097] Now with reference to Figure 11B, the SELF blanket is
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31/80 subjected to an applied axial elongation, D, indicated by arrows 220 in Figure 11. The rib-like elements 214 in the second region 206 are subjected to geometric deformation, or unfolding, and offer minimal resistance to the applied elongation. As noted in Figure 11C, the rib-like elements 214 in the second region 206 have substantially aligned with the applied geometric stretching axis (ie, the second region has reached its limit of geometric deformation) and has begun to resist further elongation through deformation of molecular level.
[00098] When the SELF mat is subjected to an applied elongation, the SELF mat exhibits an elastic-like behavior as it extends in the direction of the applied elongation and returns to its substantially unstressed condition once the elongation applied is removed, except if the SELF blanket extends beyond the elastic limit. The SELF blanket has the ability to be subjected to multiple applied stretching cycles without losing its ability to recover substantially. Consequently, the SELF blanket has the ability to return to its substantially unstressed condition once the applied force or elongation is removed.
[00099] Although the SELF blanket can be easily and reversibly extended in the direction of the applied axial elongation, in a direction substantially perpendicular to the first geometric axis of the rib-like elements, the SELF blanket does not extend so easily in one direction substantially parallel to the first geometric axis of the rib-like elements. The formation of the rib-like elements allows the rib-like elements to deform geometrically in a
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32/80 direction substantially perpendicular to the first or main geometric axis of the rib-like elements, while requiring substantially molecular deformation to extend in a direction substantially parallel to the first geometric axis of the rib-like elements.
[000100] The amount of applied force required to extend the SELF mat depends on the composition and cross-sectional area of the mat material that forms the SELF mat and the width and spacing of the first regions, with first regions widely spaced and more narrow, requiring lower applied extension forces to achieve the desired elongation. The first geometry axis, (that is, the length) of the first regions can be greater than the second geometry axis, (that is, the width) of the first region with a length to width ratio of about 5: 1 or greater.
[000101] Figure 12 shows a graph of the resistance-elongation / deformation force curve of a SELF vs. support layer or blanket. a support layer or base blanket, that is, without including the first and second regions. Specifically, Example 15 from Table 1 was used to generate curves 710 (base support layer) and 720 (SELF support layer). The method for generating the strength-elongation / deformation strength curves is the standard test method ASTM D 882 — Thin Plastic Lamination Tensile Test. The tensile test is performed at room temperature (about 22 ° C) using a 5.08 cm (2 inch) usable span for the tensile test equipment. The sample to be tested is cut into a substantially rectilinear shape, for example, approximately 15 mm wide by approximately 75 mm long. A suitable instrument for this test includes tensile testing equipment from MTS Systems Corp., Eden
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33/80
Prairie, Minn, for example, Model Synergie 400. The instrument interfaces with a computer. TestWorks 4 ™ software controls test parameters, performs data capture and calculations, and provides data graphs and reports. The comparison between a SELF support layer and a base support layer is shown below in Table 2:
Table 2
Example 15 from Table 1 Young's modulus * (MPa) Deformation @Flow (%) Base Support Layer(curve 710) 478 28 SELF Support Layer (curve 720) 254 81
* Machine Direction [000102] The support layer (Example 15 of Table 1) is coated with SELF according to a process in which the toothed cylinder (the top cylinder) has teeth having a pitch of 0.152 centimeter (0.060 inch) , a tooth height of 0.191 centimeter (0.075 inch) and a tooth spacing of 0.152 centimeter (0.060 inch). The corners of the teeth have been further rounded. The corresponding cylinder (bottom cylinder) was a non-toothed cylinder, that is, a cylinder having ridges and grooves extending circumferentially, similar to that shown in Figure 19 above, and engaged at a depth of engagement (DOE) of about 0.114 centimeter (about 0.045 inch). The SELF application process was carried out at room temperature at a rate of about 6.1 m / min (about 20 feet / min).
[000103] This demonstrates that the SELF support layer or blanket exhibits a lower Young Modulus / Deformation @ Upper flow vs. the backing layer or base blanket, resulting in a backing layer that is easier to stretch while maintaining uniform deformation.
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34/80 [000104] Additional comparisons of support layers coated with SELF vs. base support layers according to the present disclosure are shown in Table 3.
Table 3 - Examples of support layers coated with SELF vs.
base support layers
Example rf Example n ^: from Table 1 SELF application activity Hitch Depth (centimeter {inch}) You ng module (hPa> Defamarac · E & coa ment (%) Defa macao @ Rn ptLia {%) Base Film Straight film withSELF Base Film Raestidc · filmSELF Film ofBase Film Retested withSELF 1 n = 2 models p-a cd, then gra 0.114 cm {0.045 *) 458 219 31 55 495 170 2 n ^: 2 models p-a cd, then gra 0.140 cm {0.055 '} 458 232 31 87 495 102 3 n * 5 models p-a cd, then gia 0.114 cm (0.045 *) 478 191 35 59 397 241 4 n * 5 models p-a cd, then gra 0.140 cm {0.0 55 ') 478 188 35 100 397 133 5 π * o models p-a cd, then gra 0.140 cm {0.0 55 ') 485 172 37 95 352 217 5 n ^: 3 models p-a cd, then gra 0.114 cm {0.045 *) 345 254 98 139 587 147 7 n = 3 models p-a cd, then gia 0.140 cm (0.055 '} 345 251 98 95 587 98 £ n * 9 models p-a cd, then gra 0.140 cm {0.0 55 ') 355 201 97 134 381 139 9 rT 11 models p-a cd, then gra 0.140 cm {0.0 55 ') 404 139 41 228 377 250 10 n ”13 models p-a cd, thengreat 0.140 cm (0.0 55 ') 415 145 45 252 230 255 11 rr 15 models p-a cd, then gia 0.114 cm (0.045 *) 488 302 28 88 478 178 12 rf 15 models pa md 0.114 cm (0.045 *) 488 230 28 78 478 290
[000105] For Examples 1 to 11 in Table 3, the support layers are cut in the direction of the machine, rotated 90 ° and then
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SELF-coated 35/80 according to a process in which the toothed cylinder (the top cylinder) has teeth having a pitch of 0.152 cm (0.060 inch), a tooth height of 0.191 cm (0.075 inch) and a spacing between 0.152 centimeter (0.060 inch) teeth. The corners of the teeth have been further rounded. The corresponding cylinder (lower cylinder) was a non-toothed cylinder, that is, a cylinder that has ridges and grooves extending circumferentially, similar to that shown in Figure 17 above, and engaged at a depth of engagement (DOE) mentioned in Table 3 The SELF application process was carried out at room temperature and manually rotated.
[000106] For Example 12 in Table 3, the support layers are cut in the machine direction, rotated 90 ° and then coated with SELF according to a process in which the toothed cylinder (the top cylinder) has teeth having a pitch of 0.152 centimeter (0.060 inch), a tooth height of 0.191 centimeter (0.075 inch) and a tooth spacing of 0.152 centimeter (0.060 inch). The corners of the teeth have been further rounded. The corresponding cylinder (bottom cylinder) was a non-toothed cylinder, that is, a cylinder having ridges and grooves extending circumferentially, similar to that shown in Figure 19 above, and engaged at a depth of engagement (DOE) of about 0.114 centimeter (about 0.045 inch). The SELF application process was carried out at room temperature at a rate of about 6.1 m / min (about 20 feet / min).
[000107] As can be seen in Table 3, the depth and frequency of rib-like elements can also vary to control the available stretch of the SELF blanket. The available stretch is increased if, for a given frequency of rib-like elements, the height or degree of deformation
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36/80 conferred to rib-like elements increase. Similarly, the available stretch increases if, for a given height or degree of deformation, the frequency of rib-like elements increases.
[000108] Now with reference to Figure 13, an example of an apparatus 400 used to form the SELF blanket 52 shown in Figure 11 is shown. Apparatus 400 includes plates 401, 402. Cards 401, 402 include a plurality of mesh teeth 403, 404, respectively. The plates 401, 402 are joined under pressure to form the base film 406.
[000109] Now with reference to Figure 14, it can be seen that the plates 401 and 402 each have a longitudinal geometric axis l and a transverse geometric axis t that is substantially perpendicular to the longitudinal geometric axis. Plate 401 includes toothed regions 407 and grooved regions 408 extending substantially parallel to the longitudinal geometric axis of plate 401. Within toothed regions 407 of plate 401, there are a plurality of teeth 403. Plate 402 includes teeth 404 that engage the teeth. teeth 403 of plate 401. When base film 406 is formed between plates 401, 402 the portions of base film 406 that are positioned within the grooved regions 408 of plate 401 and teeth 404 on plate 402 remain undeformed. These regions correspond to the first 64 regions of the SELF blanket 52 shown in Figure 11. The portions of the base film 406 positioned between the toothed regions 407 of the plate 401 and the teeth 404 of the plate 402 are formed in an incremental and plastic manner, creating elements similar to ribs 74 in the second regions 66 of the SELF blanket 52.
[000110] In one embodiment, the forming method can be performed in a static mode, with a distinct portion of a base film being deformed at a time. An example of such a method is
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37/80 shown in Figure 15. A static press generally indicated as 415 includes an axially movable plate or member 420 and a stationary plate 422. Plates 401 and 402 are attached to members 420 and 422, respectively. Although the plates 401 and 402 are separated, the base film 406 is inserted between the plates 401, 402. The plates are then joined under a pressure generally indicated as P. The upper plate 401 is then lifted axially in the direction opposite plate 402 allowing the formed polymeric blanket to be removed from its position between plates 401 and 402.
[000111] Figure 16 is an example of a dynamic press to intermittently contact the moving mat and form the base material 406 in a formed mat similar to the SELF 52 mat in Figure 11. The polymeric film 406 is fed between plates 401 and 402 in a direction usually indicated by arrow 430. Plate 401 is attached to a pair of swiveling arms 432, 434 that travel in a clockwise direction that moves plate 401 in a clockwise direction similar. Plate 402 is connected to a pair of swivel arms 436, 438 that travel counterclockwise by moving plate 402 counterclockwise. This way, as the blanket 406 moves between the plates 401 and 402 in the direction indicated by the arrow 430, a portion of the base film between the plates is formed and then released so that the plates 401 and 402 can get hold again and deform another section of 406 base film. This method has the benefit of allowing virtually any pattern of any complexity to be formed in a continuous process, for example, unidirectional, bidirectional and multidirectional pattern.
[000112] The dynamic press of Figure 16 could be used on a material tape to form retentable networks forming the finished product. For example, all or portions of the finished material tape could be placed between plates 401 and 402 to create
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38/80 a tensionable mesh in all layers of the material tape.
[000113] Another method of forming the base material in a SELF blanket is vacuum forming. An example of a vacuum forming method is presented in the patent granted to the same US applicant No. 4,342,314, granted to Radel et al. on August 3, 1982. Alternatively, the SELF blanket of the present disclosure can be hydraulically formed according to the teachings of the patent assigned to the same US applicant No. 4,609,518 granted to Curro et al. on September 2, 1986. Each of the aforementioned patents is hereby incorporated by reference.
[000114] In Figure 17, there is shown another device generally indicated as 500 for the formation of the base film in a blanket formed of SELF. The apparatus 500 includes a pair of cylinders 502, 504. The cylinder 502 includes a plurality of toothed regions 506 and a plurality of grooved regions 508 that extend substantially parallel to a longitudinal geometrical axis that runs through the center of the cylindrical roller 502. toothed regions 506 include a plurality of teeth 507. The cylinder 504 includes a plurality of teeth 510 that engage teeth 507 in the cylinder 502. As a base film is passed between the meshed cylinders 502 and 504, the grooved regions 508 will leave portions of the non-deformed film, producing the first regions of the SELF mat 52 of Figure 11. The portions of the film that pass between the toothed regions 506 and teeth 510 will be formed by teeth 507 and 510, respectively, producing elements similar to ribs in the second regions of the SELF blanket 52. The modality in Figure 17 is called CD or SELF application in the transversal direction of the dev machine gone to the fact that the blanket 52 can be extended in the direction of CD. Alternatively, cylinder 504 may consist of soft rubber. As the base film passes between the toothed cylinder 502 and the rubber cylinder 504,
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39/80 the film is mechanically formed in the pattern provided by the toothed cylinder 502. The film within the grooved regions 508 will remain undeformed, while the film within the toothed regions 506 will be formed producing the rib-like elements in the second regions.
[000115] Now with reference to Figure 18, an alternative apparatus is shown, usually indicated as 550 for the formation of the base film in a SELF blanket according to the teachings of the present disclosure. The apparatus 550 includes a pair of cylinders 552, 554. The cylinders 552 and 554 each have a plurality of toothed regions 556 and grooved regions 558 extending around the circumference of the cylinders 552, 554, respectively. As the base film passes between cylinders 552 and 554, the grooved regions 558 will leave portions of the film undeformed, while portions of the film that pass between the toothed regions 556 will be formed producing the rib-like elements in the second regions 66. The modality of Figure 18 is called MD or application of SELF in the direction of the machine due to the fact that the mat 52 can be extended in the direction of MD.
[000116] Now with reference to Figure 19, another modality shown as 600 is shown for the formation of the base film in a SELF blanket. The apparatus 600 includes a pair of cylinders 652, 654. The cylinder 652 has a plurality of toothed regions 656 and grooved regions 658 extending around the circumference of the cylinder 652. The cylinder 654 includes a plurality of teeth 610 that engage with the teeth 656 in cylinder 652. As the base film passes between cylinders 652 and 654, the grooved regions 658 will leave portions of the film not deformed producing the first regions of the SELF mat 52 in Figure 11. The portions of the film that pass between the toothed regions 656 and teeth 610 will be formed by teeth 657 and 610,
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40/80 respectively, producing rib-like elements in the second regions of the SELF 52 mat. The modality in Figure 19 is also called MD or SELF application in the machine direction due to the fact that the mat 52 can be extended in the direction of MD.
[000117] The pair of cylinders discussed above can include any number of teeth and grooves as desired. In addition, the teeth and grooves can be non-linear, such as curved, sinusoidal, zigzag, etc. The size and amount of engagement of teeth and grooves can be any dimension desired. In one embodiment, the pitch of the teeth is about 0.051 centimeter to about 0.457 centimeter (about 0.020 inch to about 0.180 inch); in another embodiment, from about 0.076 centimeter to about 0.305 centimeter (about 0.030 inch to about 0.120 inch); in another embodiment, from about 0.102 centimeter to about 0.254 centimeter (about 0.040 inch to about 0.100 inch); and, in yet another embodiment, from about 0.127 centimeter to about 0.178 centimeter (about 0.050 inch to about 0.070 inch), or any individual value of these ranges.
[000118] With reference to Figures 22, 23 and 24, the strip of material 810 can be extended, in one embodiment, to 100% elongation in multiple directions (that is, parallel and perpendicular to a first direction), a width of material which can be narrowed shown schematically and which has a width X such as, for example, about 15 mm, is tensioned so as to be narrowed to a width Y of about, for example, about 10 mm.
[000119] As illustrated in Figures 25 A-D, the SELF-coated material tape according to the present disclosure can be extended in a mode of 0%, 25%, 50% and 100% elongation. As can be seen, the material tape maintains a
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41/80 width in uniform cross section or uniform extension as it is extended from 0 to 100%. The elongation properties of a material tape, specifically, Example 12 of Table 3 above, and the rib-like elements, are illustrated in Tables 4 and 5 below, respectively:
Table 4
Extendable tapeDimension (mm) Area (mm ² ) % area change Length (mm) % change in length Width (mm) % change in width Not extended 15x76 1,140761525% extended 13.5x95 1,282.50 12.50% 95 25% 13.5 -10.00% 50% extended 12x114 1,368 20.00% 114 50% 12 -20.00% 100% extended 10x152 1,520 33.33% 152 100% 10 -33.33%
Table 5: Extensible Tape
Width of rib-like elements (mm) Height of rib-like elements (mm) Distance between rib-like elements — center to center (mm) Not extended 0.36 1.31 1.63 25% extended 0.85 1.29 1.45 50% extended 1.26 1.22 1.27 100% extended 1.89 1.02 0.96
[000120] For Tables 4 and 5, measurements were performed under an optical microscope.
[000121] The backing layer or blanket material can be comprised of polyolefins such as polyethylene, including linear low density polyethylene (LLDPE), low density polyethylene (LDPE), ultra low density polyethylene (ULDPE), high density polyethylene (HDPE) or polypropylene and mixtures of them with the above materials and other materials. Examples of other suitable polymeric materials that can also be used include, but are not limited to, polyester, polyurethanes, compostable or biodegradable polymers, hot shrinkage polymers, thermoplastic elastomers, polymers based on metallocene catalyst (e.g. INSITE. RTM. Available from Dow Chemical Company and EXXACT.RTM. Available from Exxon), and permeable polymers. The
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42/80 blanket materials can also be comprised of synthetic fabric, synthetic mesh, nonwoven, film with openings, macroscopically expanded three-dimensional formed film, fibrous absorbent or absorbent material, foam-loaded or laminate composition and / or combinations thereof. Nonwovens can be produced using, but not limited to, any of the following methods: hydroentanglement, continuous spinning, meltblown, carded and / or air permeable or calendered, with a hydroentangled material with loosely connected fibers being the preferred modality.
[000122] Although the SELF blanket has been described as a single base layer of substantially flat polymeric film, other base or laminate materials can also be used. Examples of base materials from which the SELF blanket can be produced include films with two-dimensional opening and films formed with macroscopically expanded three-dimensional opening. Examples of films formed with macroscopically expanded three-dimensional aperture are described in US Patent No. 3,929,135 issued to Thompson on December 30, 1975; US patent No. 4,324,246 issued to Mullane, et al. on April 13, 1982; US patent 4,342,314 issued to Radel, et al. on August 3, 1982; US patent No. 4,463,045 issued to Ahr, et al. on July 31, 1984; and US Patent No. 5,006,394 issued to Baird on April 9, 1991. Each of these patents is hereby incorporated by reference. Examples of other suitable base materials include composite or laminated structures of polymeric, nonwoven films and polymeric and nonwoven films. Additional reinforcement elements can also be added for strength and recovery benefits.
[000123] In another embodiment, the support layer 812 can be a
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43/80 elastomeric non-woven substrate or an elastomeric film that does not require application of SELF. Some non-limiting examples of suitable elastomeric materials include thermoplastic elastomers, chosen from at least one of styrenic block copolymers, metallocene-catalyzed polyolefins, polyesters, polyurethanes, polyether amides and combinations thereof. Suitable styrenic block copolymers can be diblock, triblock, tetrablock, or other multi-block copolymers having at least one styrenic block. Examples of styrene block copolymers include styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene / butylenes-styrene, styrene-ethylene / propylene-styrene, and the like. Commercially available styrene block copolymers include KRATON® from Shell Chemical Company of Houston, TX; SEPTON® by Kuraray America, Inc. of New York, NY, USA; and VECTOR® from Dexco Polymers, LP from Houston, TX, USA. Commercially available metallocene-catalyzed polyolefins include EXXPOL® and EXACT® from Exxon Chemical Company of Baytown, TX, USA; AFFINITY®; and ENGAGE® from Dow Chemical Company of Midland, MI, USA. Commercially available polyurethanes include ESTANE®, available from Noveon, Inc., Cleveland, OH, USA. Commercially available polyether amides include PEBAX®, available from Atofina Chemicals of Philadelphia, PA, USA. Commercially available polyesters include HYTREL®, available from E. I. DuPont de Nemours Co., Wilmington, DE, USA. Other particularly suitable examples of elastomeric materials include elastomeric polypropylenes. In these materials, propylene represents most of the components of the main polymer chain and, as a result, any residual crystallinity has the characteristics of polypropylene crystals. The residual crystalline entities incorporated in the molecular network
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44/80 propylene-based elastomeric can act as physical crosslinking, providing polymeric chain anchoring capabilities that improve the mechanical properties of the elastic network, such as high degree of recovery, low permanent deformation and relaxation at low intensity forces. Suitable examples of elastomeric polypropylenes include a random copolymer of elastic poly (propylene / olefin), an isotactic polypropylene containing stereoselective errors, an isotactic / atactic polypropylene block copolymer, an isotactic polypropylene block copolymer / random poly (propylene copolymer) / olefin), a reactor mixed polypropylene, a very low density polypropylene (or, equivalently, an ultra low density polypropylene), a metallocene polypropylene and combinations thereof. Suitable polypropylene polymers including crystalline isotactic blocks and amorphous atactic blocks are described, for example, in U.S. Patent Numbers 6,559,262, 6,518,378 and 6,169,151. Suitable isotactic polypropylene with stereoselective errors along the polymer chain is described in U.S. Patent No. 6,555,643 and EP 1,256,594 A1. Suitable examples include elastomeric random copolymers (CPAs), which include propylene with a low-level comonomer (e.g., ethylene or a higher alpha-olefin) incorporated into the main chain. Suitable elastomeric CPA materials are available under the names VISTAMAXX® (available from ExxonMobil, Houston, TX, USA) and VERSIFY® (available from Dow Chemical, Midland, MI, USA).
[000124] In another embodiment, the support layer 812 can be formed by a process to selectively provide openings to a non-woven blanket. In one embodiment, the nonwoven blanket can be extensible, elastic or non-elastic. The nonwoven blanket can be a blanket produced by continuous spinning, a blanket
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45/80 produced by fusion blowing or a carded filament blanket. If the nonwoven blanket is a blanket of fibers produced by melt blowing, it can include microfibers produced by melting and blowing. The nonwoven blanket can be produced from fiber-forming polymers such as polyolefins. US patent No. 5,916,661, entitled Selectively Apertured Nonwoven Web granted to Benson et al. on June 29, 1999, it reveals a process to selectively open a nonwoven blanket and is incorporated here as a reference.
[000125] In another embodiment, the material tape can be formed by a substance encapsulation system. US patent No. 6,716,498, entitled Applications For Substance Encapsulating Laminate Web granted to Curro et al. on April 6, 2004, it presented an adequate substance application system and is incorporated herein by reference.
[000126] Surprisingly, it has been found that strips of material with a backing layer coated with SELF can be extended more easily without causing sudden narrowing. Instead, the material tape according to the present disclosure is uniformly deformed when it is extended. These beneficial properties can be quantified by measuring certain characteristics of a material strip, including Young's Modulus,% Deformation @ Break and% Deformation @ Flow. The strips of material according to the present disclosure may have a Young's Modulus less than 50 MPa, in another modality, less than 40 MPa, in yet another modality, less than 30 MPa and, in yet another modality, of about 15 MPa at about 50 MPa. In another embodiment, the strips of material according to the present disclosure may have a% Deformation @ Rupture greater than about 250%, in another embodiment, from about 250% to about 500% and, in another
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46/80 modality, from about 200% to about 400%. In another embodiment, the strips of material according to the present disclosure may have a% Deformation @ Flow greater than about 25%, in another embodiment, from about 20% to about 300%, in another embodiment, from about from 25% to about 200% and, in another modality, from about 30% to about 100%.
Composition for oral treatment [000127] The composition for oral treatment is a composition, compound or mixture capable of influencing or effecting a desired change in the appearance and / or structure of the surface with which it comes into contact. Examples of changes in appearance and structure include, but are not necessarily limited to, bleaching, bleaching of stains, removal of stains, removal of plaque and removal of tartar. According to the present disclosure, the composition for oral treatment can be adhesive or non-adhesive and includes one or more active agents for oral treatment. In one embodiment, the active ingredient is used to whiten tooth surfaces.
Adhesive composition [000128] Adhesive is a composition, compound or mixture capable of influencing or effecting a desired change in the appearance and / or structure of the surface that it comes into contact with. Examples of changes in appearance and structure include, but are not necessarily limited to, bleaching, bleaching of stains, removal of stains, removal of plaque and removal of tartar. According to the present disclosure, the adhesive composition includes one or more oral treatment assets. In one embodiment, the active ingredient is used to whiten tooth surfaces.
[000129] The adhesive composition can be applied as a cover over the material tape, be applied by the user to the support layer or be applied by the user to his teeth and then the
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47/80 support layer is placed over the covered teeth. The amount of adhesive applied to the support layer or teeth will depend on the size and capacity of the piece of material, the concentration of the asset and the desired benefit. In general, less than about 1 gram of substance is needed. In certain embodiments, about 0.05 grams to about 0.5 grams or about 0.1 grams to about 0.4 grams of the substance is used. The amount of substance per square centimeter of material can be less than about 0.2 gram / cm ² , from about 0.005 to about 0.1 gram / cm ² , or about 0.01 gram / cm ² at about 0.04 gram / cm ² .
[000130] The adhesive may be in the form of a viscous liquid, paste, gel, aqueous gel, solution or other suitable form that can provide sufficient adhesion. The substance can have a viscosity of about 200 to about 1,000,000 cps, from about 100,000 to about 800,000 cps and, more preferably, from about 400,000 to about 600,000 cps at low shear rates (less than a 1 / second).
[000131] In one embodiment, the adhesive composition can be an aqueous gelling agent. These gelling agents are safe for oral use, do not readily dissolve in saliva, and do not react with or deactivate the compounds for oral treatment incorporated into them. Generally, the gelling agent is a swellable polymer. In addition, the gel formed with these agents provides sufficient adhesive fixation of the support layer to the target area of the mouth. The level of gelling agent to form the gel composition is from about 0.1% to about 15%, in another embodiment, from about 1% to about 10%, in another embodiment, from about 2% to about 8% and, in yet another embodiment, from about 4% to about 6% by weight of the composition or substance for oral treatment.
[000132] Suitable gelling agents include carboxy
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48/80 polymethylene, carboxymethylcellulose, carboxy propyl cellulose, polyoxamers, carrageenan, gum see, carboxyvinyl polymers and natural gums such as gum caraia, xanthan gum, guar gum, arabic gum, tragacanth gum and mixtures thereof. In one embodiment, the polymethylene carboxy obtained from B. F. Goodrich Company under the trade name Carbopol.RTM is used. For example, carbopols include Carbopol 934, 940, 941, 956 and mixtures thereof.
Carboxypolymethylene is a slightly acidic vinyl polymer with active carboxyl groups. The normal concentration of various polymethylene carboxy resins in water, according to the manufacturer, is below about 2%. However, it has been found that by preparing supersaturated polymethylene carboxy compositions that have an absolute concentration in those ranges specified above, suitable high viscosity oral gel compositions can be prepared. [000133] Concentrated polymethylene carboxy gels have numerous important characteristics in addition to high viscosity. Sufficient amount of polymethylene carboxy is added to the oral gel compositions in addition to that required to provide high viscosity so that a significant amount of saliva or water is needed to reduce viscosity to the point where the composition can be diluted and removed by saliva . The concentrated polymethylene carboxy composition also has a unique adhesion or tackiness that retains and seals the tape material against the target surface of the oral cavity to which it is attached, particularly the teeth. However, care must be taken to avoid excess polymethylene carboxy thereby making it difficult to insert or remove the tape material. [000134] If the adhesive composition is an aqueous gel, the water present in the gel compositions should be deionized and free of organic impurities. Water comprises from about 0.1% to 95%, in another mode, from about 5% to about 90% and, in yet another
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49/80 modality, from about 10% to about 80% by weight of the substance for oral treatment. That amount of water includes the free water that is added, plus that amount that is introduced with other materials.
[000135] A pH adjusting agent can also be added to optimize the storage stability of the gel, and to make the substance safe for use in oral tissues. Such pH adjusting agents, or buffers, can be any material that is suitable for adjusting the pH of the adhesive composition. Suitable materials include sodium bicarbonate, sodium phosphate, sodium hydroxide, ammonium hydroxide, sodium stannate, triethanolamine, citric acid, hydrochloric acid, sodium citrate and combinations thereof. The pH adjusting agents are added in sufficient quantities to adjust the pH of the gel composition to about 4.5 to about 11, in another embodiment, from about 5.5 to about 8.5 and, in another embodiment, from about 6 to about 7. pH adjusting agents are generally present in an amount of about 0.01% to about 15% and, in another embodiment, from about 0 , 05% to about 5% by weight of the adhesive composition.
[000136] Although the gel described above provides sufficient adhesion, additional gelling agents can also be included in the formula to help the active ingredients adhere to the tissues of the oral cavity. Suitable agents include polymers with limited water solubility as well as polymers that lack water solubility. These polymers deposit a thin film on the soft and hard tissues of the oral cavity when saliva is combined with the present composition. Suitable limited water solubility adhesives include ethyl hydroxy or propyl cellulose. Adhesives that lack water solubility include: ethyl cellulose resins and Polyox. Another possible adhesive suitable for use in this
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50/80 composition is polyvinyl pyrrolidone with a molecular weight of about 50,000 to about 30,000,000. Yet another adhesive suitable for use in the present composition is a combination of Gantrez with the water-soluble semisynthetic polymer, carboxymethyl cellulose.
[000137] An additional carrier material can also be added to the adhesive composition. Carrier materials can be humectants. Suitable humectants include glycerin, sorbitol, polyethylene glycol, propylene glycol and other edible polyhydric alcohols. Humectants are generally present in an amount from about 10% to about 95% and, in another embodiment, from about 50% to about 80% by weight of the adhesive composition. In addition to the materials above the gel, several other components can also be added to the adhesive composition. Additional components include, but are not limited to, flavoring agents, sweetening agents, xylitol, opacifiers, coloring agents, and chelators such as ethylene diaminetetraacetic acid. These additional ingredients can also be used in place of the compounds disclosed above.
Assets for oral treatment [000138] As mentioned above, the composition for oral treatment can include an asset for oral treatment at a level where, through direct use, it promotes the benefit sought by the user without prejudice to the oral surface on which it is applied. Products suitable for oral treatment assets include any material that is generally considered safe for use in the oral cavity, which provides changes to the overall health of the oral cavity and, specifically, the condition of the oral surfaces on which the adhesive composition comes into contact. The active level for oral treatment is about 0.01% to about 40%, in another modality, from about 0.1% to about 30%, in another modality, from about 0.5% to about 20% and, in yet another modality, from about 1% to about
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51/80 of 15% by weight of the adhesive composition.
[000139] Below is a short list of oral treatment assets that can be used in accordance with the present disclosure.
1. Teeth whitening assets [000140] Teeth whitening assets may be included in the oral treatment substance. The assets suitable for bleaching are selected from the group consisting of peroxides, metallic chlorites, perborates, percarbonates, peroxyacids and a combination thereof. Suitable peroxide compounds include hydrogen peroxide, calcium peroxide, carbamide peroxide and mixtures thereof. Suitable metal chlorites include calcium chlorite, barium chlorite, magnesium chlorite, lithium chlorite, sodium chlorite and potassium chlorite. Additional bleaching assets can be hypochlorite and chlorine dioxide.
2. Phosphates [000141] Anti-tartar agents known for use in dental care products include phosphates. Phosphates include pyrophosphates, polyphosphates, polyphosphonates and mixtures thereof. Pyrophosphates are among the best known for use in dental care products. The pyrophosphate ions applied to teeth are derived from pyrophosphate salts. The pyrophosphate salts useful in the present compositions include the dialkali metal pyrophosphate salts, the tetraalkaline metal pyrophosphate salts, and mixtures thereof. disodium pyrophosphate dihydrogen (Na2H2P2O7), tetrasodium pyrophosphate (Na4P2O7) and tetrapotassium pyrophosphate (K4P2O7) in their unhydrated as well as hydrated forms are examples.
[000142] Pyrophosphate salts are described in more detail in Kirk & Othmer, Encyclopedia of Clinical Technology Third Edition,
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52/80
Volume 17, Wiley-Interscience Publishers (1982), hereby incorporated in its entirety, as a reference, including all references incorporated to Kirk & Othmer. Additional anti-calculation agents include pyrophosphates or polyphosphates disclosed in US Patent No. 4,590,066 issued to Parran & Sakkab on May 20, 20, 1986; polyacrylates and other polycarboxylates such as those disclosed in U.S. Patent No. 3,429,963 issued to Shedlovsky on February 25, 1969 and US Patent No. 4,304,766 issued to Chang December 8, 1981; and US Patent No. 4,661,341 issued to Benedict & Sunberg on April 28, 1987; polyepoxy succinates such as those disclosed in US Patent No. 4,846,650 issued to Benedict, Bush & Sunberg on July 11, 1989; ethylenediaminetetraacetic acid as disclosed in British Patent No. 490,384 of February 15, 1937; triacetic nitrile acid and related compounds as disclosed in US Patent No. 3,678,154 issued to Widder & Briner on July 18, 1972; polyphosphonates as disclosed in US Patent No. 3,737,533 issued to Francis on June 5, 1973, US Patent No. 3,988,443 issued to Ploger, Schmidt-Dunker & Gloxhuber on October 26, 1976 and US Patent No. 4,877,603 granted to Degenhardt & Kozikowski on October 31, 1989; all of these patents are hereby incorporated by reference. Anti-calculation phosphates include potassium and sodium pyrophosphates; sodium tripolyphosphate; diphosphonates, such as ethane1-hydroxy-1,1-diphosphonate, 1azacycloeptane-1,1diphosphonate and linear alkyl diphosphonates; linear carboxylic acids; and sodium zinc citrate.
[000143] Agents that can be used in place of or in combination with the pyrophosphate salt include those materials known as synthetic anionic polymers including polyacrylates and copolymers of anhydride or maleic acid and methyl vinyl ether (for example, Gantrez), as described , for example, in US patent no.
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53/80
4,627,977, Gaffar et al., The description of which is incorporated herein by reference in its entirety; as well as, for example, polyamino propoane sulfonic acid (AMPS), zinc citrate trihydrate, polyphosphates (for example, tripolyphosphate; hexametaphosphate), diphosphonate (for example, EHDP; AHP), polypeptides (such as polyaspartic and polyglutamic acids), and mixtures of the same.
3. Fluoride ion source [000144] Fluoride ion sources are well known for use in oral treatment compositions as anti-caries agents. Fluoride ions are contained in several compositions for oral treatment intended for this purpose, particularly in toothpastes. Patents that disclose such toothpastes include US patent No. 3,538,230, November 3, 1970 to Pader et al; US patent No. 3,689,637, September 5, 1972 to Pader; US patent No. 3,711,604, January 16, 1973 to Colodney et al; US patent No. 3,911,104, October 7, 1975 to Harrison; US patent No. 3,935,306, January 27, 1976 to Roberts et al; and US Patent No. 4,040,858, January 9, 1977 to Wason.
[000145] The application of fluoride ions to tooth enamel serves to protect teeth against deterioration. A wide variety of materials that provide fluoride ion can be employed as a source of soluble fluoride in the compositions of the present invention. Examples of suitable materials that produce fluoride ions are found in Briner et al; US patent No. 3,535,421; granted on October 20, 1970 and Widder et al; US patent No. 3,678,154; granted July 18, 1972, both patents are hereby incorporated by reference. In one embodiment, the present compositions provide about 50 ppm to 10,000 ppm and, in another embodiment, about 100 to 3,000 ppm, of fluoride ions in aqueous solutions that come into contact with dental surfaces when used with the material tape
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54/80 used in the mouth.
4. Microbicidal agents [000146] Antimicrobial agents can also be included in substances for oral treatment according to the present disclosure. Such agents can include, but are not limited to, 5-chloro-2- (2,4dichlorophenoxy) -phenol, commonly called triclosan, and described in The Merck Index, 11th ed. (1989), page 1,529 (entry No. 9573) in US Patent No. 3,506,720, and in European Patent Application No. 0251,591 to Beecham Group, PLC, published on January 7, 1988; phthalic acid and its salts including, but not limited to, those disclosed in US Patent No. 4,994,262, February 19, 1991, substituted monopertallic acid and its salts and esters as disclosed in US Patent No. 4,990,329, 5 of February 1991, 5,110,583, half of 1992 and 4,716,035, December 29, 1987, all to Sampathkumar; preferably magnesium monoperoxy phthalate, chlorhexidine (Merck Index, No. 2090), alexidine (Merck Index, No. 222; hexetidine (Merck Index, No. 4624); sanguinarine (Merck Index, No. 8320); benzalkonium chloride (Merck Index, No. 1066); salicylanilide (Merck Index, No. 8299); dornifene bromide (Merck Index, No. 3411); cetylpyridinium chloride (CCP) (Merck Index, No. 2024; tetradecylpyridinium chloride (CTP ); Ntetradecyl-4-ethylpyridinium chloride (CTDEP); octenidine; delmopinol, octapinol, and other piperidine derivatives; niacin preparations; zinc / tin ion agents; antibiotics such as augmentin, amoxicillin, tetracycline, doxycycline, minocycline and metronidine; analogs and salts of the foregoing; essential oils including thymol, geraniol, carvacrol, citral, hinoquitiol, eucalyptol, catechol (particularly 4-allyl catechol) and mixtures thereof; methyl salicylate; hydrogen peroxide; chlorite metal salts and mixtures of what was available above.
5. Anti-inflammatory agents [000147] Anti-inflammatory agents can also be
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55/80 present in substances for oral treatment. These agents may include, but are not limited to, non-steroidal anti-inflammatory agents, or NSAIDs, such as ketorolac, flurbiprofen, ibuprofen, naproxen, indomethacin, aspirin, ketoprofen, piroxicam and meclofenamic acid. The use of NSAIDs such as ketorolac is claimed in U.S. Patent No. 5,626,838, issued May 6, 1997, hereby incorporated by reference. In that document, methods for the prevention and / or treatment of primary and recurrent squamous cell carcinoma of the oral cavity or oropharynx are presented through topical administration, to said oral cavity or oropharynx, of an effective amount of an NSAID.
6. Nutrients [000148] Nutrients can optimize the condition of the oral cavity and can be included in substances for oral treatment. These nutrients include minerals, vitamins, oral nutritional supplements, enteral nutritional supplements and mixtures of these items.
[000149] Minerals that can be included with the compositions of the present invention include calcium, phosphorus, fluoride, zinc, manganese, potassium and mixtures of these items. These minerals are revealed in Drug Facts and Comparisons (drug information service, in brochures), Wolters Kluer Company, St. Louis, Mo., 1997, pages 10 to 17; incorporated herein by way of reference.
[000150] Vitamins can be included with minerals or used separately. The vitamins include vitamins C and D, thiamine, riboflavin, calcium pantothenate, niacin, folic acid, nicotinamide, pyridoxine, cyanocobalamin, para-amino benzoic acid, bioflavonoids and combinations thereof. Such vitamins are revealed in Drug Facts and Comparisons (drug information service, in brochures), Wolters Kluer Company, St. Louis, Mo., 1997, pages 3 to 10; incorporated herein by way of reference.
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56/80 [000151] Oral nutritional supplements include amino acids, lipotropics, fish oil and combinations thereof, as featured in Drug Facts and Comparisons (drug information service, in brochures), Wolters Kluer Company, St. Louis, Mo ., 1997, pages 54 to 54e; incorporated herein by way of reference. Amino acids include, but are not limited to, L-tryptophan, L-lysine, methionine, threonine, levocarnitine or L-carnitine, and combinations thereof. Lipotropics include, but are not limited to, choline, inositol, betaine, linoleic acid, linolenic acid and mixtures of these items. Fish oil contains large amounts of omega-3 (N-3) polyunsaturated fatty acids, eicosapentaenoic acid and docosahexaenoic acid.
[000152] Enteral nutritional supplements include, but are not limited to, protein products, glucose polymers, corn oil, safflower oil, medium chain triglycerides as presented in Drug Facts and Comparisons (drug information service, in brochures ), by Wolters Kluer Company, St. Louis, MO, USA, 1997, pages 55 to 57, hereby incorporated by reference.
7. Enzymes [000153] An individual enzyme or a combination of several compatible enzymes may be included in substances for oral treatment. Enzymes are biological catalysts for chemical reactions in living systems. Enzymes combine with various substrates on which they act, forming an intermediate enzyme-substrate complex. This complex is then converted into a reaction product and a released enzyme, which continues its specific enzymatic function.
[000154] Enzymes provide several benefits when used to clean the oral cavity. Proteases destroy salivary proteins that are absorbed on the dental surface and form the film; the resulting first layer of plaque. Proteases,
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57/80 together with lipases, they destroy bacteria by lysing proteins and lipids that form the structural component of cell walls and bacterial membranes. Dextranases break down the organic skeletal structure produced by bacteria, which forms a matrix for bacterial adhesion. Proteases and amylases not only prevent plaque formation, but also prevent the development of stones by disrupting the carbohydrate protein complex that binds calcium, preventing mineralization.
[000155] Enzymes useful in the present disclosure include any of the commercially available proteases, glucan hydrolases, endoglycosidases, amylases, mutanases, lipases and mucinases, or compatible mixtures thereof. Proteases, dextranases, endoglycosidases and mutanases are preferred, with papain, endoglycosidase or a mixture of dextranase and mutanase being most preferred. Additional enzymes suitable for use in the present invention are disclosed in U.S. Patent No. 5,000,939 to Dring et al., March 19, 1991; US patent No. 4,992,420 to Neeser, February 12, 1991; US patent 4,335,022 to Rabussay, October 19, 1982; US patent No. 4,154,815 to Pader, May 15, 1979; US patent 4,058,595 to Colodney, November 15, 1977; US patent No. 3,991,177 to Virda et al., November 9, 1976 and US patent No. 3,696,191 to Weeks, October 3, 1972; all of these documents being incorporated herein by way of reference.
8. Mouth and throat products [000156] Other materials that can be used include commonly known mouth and throat products. Such products are revealed in Drug Facts and Comparisons (drug information service, in brochures), Wolters Kluer Company, St. Louis, Mo., 1997, pages 520b to 527; incorporated herein by way of reference. These products include, but are not limited to, fungicidal agents,
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58/80 antibiotics and analgesics.
9. Antioxidants [000157] Antioxidants are generally recognized as useful in substances for oral treatment. They are revealed in antioxidant texts such as Cadenas and Packer, The Handbook of Antioxidants.COPYRGT., 1996 by Marcel Dekker, Inc., incorporated herein, by reference. Antioxidants that may be included in the oral treatment composition or substance of the present invention include, but are not limited to, vitamin E, ascorbic acid, uric acid, carotenoids, vitamin A, flavonoids and polyphenols, herbal antioxidants, melatonin, aminoindoles, lipoic acids and combinations thereof.
10. H-2 antagonists [000158] Histamine-2 receptor antagonist compounds (H-2 or H2) (H-2 antagonists) can be used in the oral treatment composition of the present invention. For use in the present invention, selective H-2 antagonists are compounds that block H-2 receptors, but which have no significant activity in blocking histamine1 (H-1 or H1) receptors. Selective H-2 antagonists stimulate the contraction of the smooth muscles of various organs such as the intestine and the bronchi; this effect can be suppressed by low concentrations of mepiramine - a typical antihistamine drug. The pharmacological receptors involved in these mepiramine-sensitive histamine responses have been defined as H-1 receptors (Ash, ASF & HO Schild, Brit. J. Pharmacol Chemother., Volume 27 (1966), page 427), incorporated herein by way of reference Histamine also stimulates acid secretion from the stomach (Loew, ER & O. Chickering, Proc. Soc. Exp. Biol. Med., Vol. 48 (1941), page 65, incorporated herein by way of reference), increases heart rate (Trendelenburg, U., J. Pharmacol., Vol. 130 (1960), page 450, incorporated herein, by way of
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59/80 reference) and inhibits contractions in the rat uterus (Dews, P. B. & J. D.
P. Graham, Brit. J. Pharmacol. Chemother., Vol. 1 (1946), page 278, incorporated herein by reference); these actions cannot be antagonized by mepiramine and related drugs. H-2 antagonists useful for use in oral treatment compositions or substances are those that block receptors involved in mepiramine-insensitive histamine responses, non-H-1 (H-2), and that do not block receptors involved in histamine responses sensitive to mepiramine.
[000159] Selective H-2 antagonists are those compounds discovered as H-2 antagonists for their performance in classic preclinical screening tests for H-2 antagonist function. Selective H-2 antagonists are identified as compounds for which they can be shown to function as competitive or non-competitive inhibitors of histamine-mediated effects in those screening models specifically dependent on H-2 receptor function, but which have no significant activity of histamine antagonist in those screening models dependent on H-1 receptor function. Specifically, this includes compounds that would be classified as described by Black, JW, WAM Duncan, CJ Durant, CR Ganellin & EM Parsons, Definition and Antagonism of Histamine H2 -Receptors, Nature, Vol. 236 (April 21, 1972), pages 385 to 390 (Black), hereby incorporated by reference, as H-2 antagonists if evaluated as described by Black through the test with the in vitro test of the right atrium of spontaneous tapping of the guinea pig and the in vivo test of gastric acid secretion of rat, but demonstrated a lack of significant H-1 antagonist activity in relation to H-2 antagonist activity, if evaluated as described by Black with the in-vitro guinea pig ileum assay or the assay in vivo muscle contraction of the
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60/80 rat stomach. Preferably, the selective H-2 antagonists do not demonstrate any significant H-1 activity at dosage levels in the aforementioned H-1 assays. The typical reasonable dosage content is the lowest dosage content at which 90% histamine inhibition, preferably 99% histamine inhibition, is obtained in the aforementioned H-2 assay.
[000160] The selective H-2 antagonists include compounds that meet the above criteria, which are disclosed in US Patent Nos. 5,294,433 and 5,364,616 issued to Singer et al., March 15, 1994 and November 15 1994, respectively, and attributed to Procter &Gamble; incorporated herein by reference, the selective H-2 antagonist being selected from the group consisting of cimetidine, etintidine, ranitidine, ICIA-5165, tiotidine, ORF-17578, lupitidine, donetidine, famotidine, roxatidine, pifatidine, lamtidine, BL6548, BMY -25271, zaltidine, nizatidine, mifentidine, BMY-52368, SKF94482, BL-6341A, ICI-162846, ramixotidine, Wy-45727, SR-58042, BMY-25405, loxtidine, DA-4634, bisphentidine, suffotidine, hematidine, suffotidine, e -256, D-16637, FRG-8813, FRG-8701, impromidine, L643728 and HB408.4. Particularly preferred is cimetidine (SKF-92334), Nciano-N'-methyl-N- (2 - ((((5-methyl 1 H-imidazol-4-yl) methyl) thio) ethyl) guanidine:
h ₃ c
ClbSCILCIIzNIICNIICIh
[000161] Cimetidine is also presented in the Merck Index, 11a. Edition (1989), page 354 (entry n ° 2279), and in Physicians' Desk Reference, 46a. Edition (1992), page 2228. Preferred related H-2 antagonists include burimamide and metiamide. Release liner [000162] As mentioned above, material 810 tape can also include a release liner 827, as shown in
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61/80
Figure 20. The release liner can be formed from any material that exhibits less affinity for the substance than the substance exhibits by itself and the material strip. The release liner may comprise a sheet of relatively rigid material such as polyethylene, paper, polyester or other material which is then covered with a non-stick type material. The release liner material can be covered with wax, silicone, polyester such as Teflon®, fluoropolymers or other non-stick materials.
[000163] A suitable release liner is Scotchpak®, produced by 3M. The release liner can be cut substantially the same size and shape as the backing layer or the release liner can be cut larger than the backing layer to provide a readily accessible means for separating the release liner from the backing layer. The release liner may be formed from a brittle material that cracks when the tape is flexed, or from multiple pieces of material or a piece of marked material. Alternatively, the release liner may be in two overlapping pieces, like a typical tape-type bandage model. An additional description of materials suitable as release agents is found in the Kirk-Othmer Encyclopedia of Chemical Technology, fourth edition, volume 21, pages 207 to 218, incorporated herein by reference.
[000164] The material tape 810 can also include a flexible fractured plastic film or mesh 816 located between the release liner and the backing layer, as shown in Figure 21. In one embodiment, the mesh layer is incorporated into the composition for oral or adhesive treatment. A suitable network layer is DELNET®, available from DelStar Technologies, Inc., Middletown,
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IN. The mesh covering can be cut to substantially the same size and shape as the backing layer. DELNET® is a mesh layer material produced from high density polyethylene, low density polyethylene, linear low density polyethylene, polypropylene, poly (vinyl acetate) or mixtures of these polymers. DELNET® has a porosity of 94.3 L / s to 943.9 L / s (200 cfm to 2,000 cfm), a thickness of about 0.0025 centimeter to about 0.025 centimeter (about 0.001 inch to about 0.010 inch) and a base weight of 2.96 mL / sy to 73.9 (0.10 Oz / sy) to 73.93 mL / sy (2.50 Oz / sy).
Examples [000165] The following examples are presented for illustrative purposes only and should not be construed as limiting this description.
[000166] Examples 1 to 12 shown in Table 6 below are modalities of oral treatment compositions for use with a tape according to the present disclosure.
Table 6
2 3 4 5 6
Glycerin 10,000¾ 10,000,000 20,000,000 10,000
Water 67.776¾ 64.34 3¾ 54.343¾ 64.24 3¾ 74.143¾ 67 _r 776¾
Peroxide
Hydrogen (Solution 15.143¾ 13, 571¾ 13, 571¾ 13, 571¾ 13, 571¾ 15 _r 143¾ at 35%)
Polymethylene carbox i 4,500% 4,500% 4,500% 4,500% 4,500% 4,500¾ Sodium hydroxide (50% solution) 2.0% 2.0'00% 2,000% 2.0'00% 2,000% 2,000¾ Sodium saccharin - - - 0.100% 0.200% - Sodium stannate 0.200% 0.200% 0.200% 0.200% 0.200% 0.200¾ Sodium pyrophosphate 0.3B1% 0.3B1% 0.3B1% 0.3B1% 0.3B1% 0.361¾ Propylene glycol - - - - - 10,000¾ Pluronic 407 - - - - - -
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7 8 9 10 11 12 Glycerin 10 , 000% - 3, 000% 15, 000% 10,000% 10 _r 000% Water 69 , 157% 57 , 276% 72 .5 76% 63.076% 72.919% 66.955% PeroxideHydrogen (Solution 15 , 143% 15 , 143% 17 , 143% 15,143% - 17,143% to 35%)Polymethylene carboxy 4, 500% - 4, 500% 4,500% 4,500% 4,500% Sodium hydroxide 2, 000% 2, 000% 2, 200% 1,700% 2,000% - {50% solution) Eacarina sodium - - - - - - Sodium stannate 0, 200% 0, 200% 0, 200% 0.200% 0.200% - Pyrophosphate - 0, 3B1% 0, 3B1% O, 3B1% O, 3B1% - Propylene glycol - - - - - - Pluronic 407 - 25 , 000% - - - - Hydroxide 1.403% potassiumCarbamide Peroxide - - - 10,000% -
Exemplary oral treatment compositions [000167] For Table 6 above, the values of percentages and concentrations of peroxide assets are measured using the following method. The package containing the peroxide system is stored for the period of time (for example, 12 months) and conditions established. After the established storage period, the peroxide concentration is measured using the iodometric titration method. The iodometric titration method is a standard method known in the art for measuring peroxide concentration. In general, the method is carried out by weighting the substrate and the composition containing the peroxide asset, dissolving the composition in 1M sulfuric acid and reacting the peroxide with an excess of potassium iodide in the presence of ammonium molybdate. This is then titrated with a known concentration of sodium thiosulfate to an end point of the transparent test using a starch indicator. The substrate is weighted upon completion of the titration and the weight of the composition is
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64/80 determined through the difference. The concentration of peroxide in the composition is then calculated. When the storage period is long, the concentration of the peroxide asset can alternatively be determined by measuring the concentration as described above after at least 120 days and then extrapolated to the rest of the period using first rate kinetics order, as is known in the art. The method described above is carried out immediately after the manufacture of a peroxide product, and at the end of the specified storage period, in order to determine both the absolute peroxide concentrations and the remaining percentage of the concentration, as is known in the art.
[000168] Examples 13 to 15 shown below are modalities of oral treatment compositions for use with a tape according to the present disclosure.
[000169] The following abbreviations and trade names are used in the Examples below:
Eudragit L 100-55 methacrylic acid copolymer, (Rohm America Inc.) PEG
Polyethylene glycol 400
Plasdone ® K30 polyvinylpyrrolidone (ISP)
Kollidon ® 90F polyvinylpyrrolidone (BASF)
PVP30
PVP90
Example 13
Preparation of a solid composition [000170] The following composition for whitening teeth was prepared from the following ingredients using a melt extrusion process:
* Eudragit L 100-55
PVP90
PEG
Hydrogen peroxide
Water, stabilizers, pH modulators
9% by weight
44% by weight
22% by weight 6% by weight 19% by weight
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65/80 [000171] The ingredients were processed by melting in a Brabender single screw extruder as follows: First, Eudragit L 100-55 was added to the extruder, followed by PVP90 and PEG, at a temperature of 100 to 150 ° C. The composition was extruded to a thickness of 0.35 mm between two polyethylene terephthalate release liners. A solution of hydrogen peroxide was added to the extruded film.
Example 14
Preparation of a non-solid composition [000172] A teeth whitening composition has been prepared from the following ingredients (Formula A):
Deionized waterEthanol 35.0% by weight35.0% by weight Eudragit L 100-55PEG 4.00% by weight1.00% by weight PVP90 7.00% by weight Carbamide Peroxide 18.0% by weight Sodium citrate 0.13% by weight
[000173] The composition was mixed in a low-speed, high-torque Cole-Parmer laboratory mixer equipped with a Teflon-coated propeller (5.08 centimeters (2 inches) in diameter) as follows. Deionized water was mixed with ethanol, followed by the addition of PEG. Sodium citrate was then added under conditions of vigorous stirring. Eudragit L 100-55 powder was added slowly (in 2 to 5 min) under vigorous stirring (500 to 600 rpm). After about 5 to 10 min (it is not necessary to wait until the entire Eudragit has dissolved), the PVP90 powder was added slowly (in 5 min). The high agitation rate was maintained for 5 to 10 min. Carbamide peroxide powder was added (in 1 to 2 min) and the mixture was stirred to obtain a homogeneous solution (approximately 30 minutes at 800
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900 rpm). The solution was then stored over a period of 5 hours in order to let the air bubbles dissipate.
Example 15
Preparation of a non-solid composition [000174] A teeth whitening composition has been prepared from the following ingredients (Formula B):
Deionized waterEthanol 35.0% by weight35.0% by weight Eudragit L 100-55PEG 2.50% by weight1.92% by weight PVP90 6.00% by weight Carbamide Peroxide 18.0% by weight Sodium citrate 0.08% by weight Methocel A4C 1.50% by weight
[000175] The composition was mixed in a low-speed, high-torque Cole-Parmer laboratory mixer equipped with a Teflon-coated propeller (5.08 centimeters (2 inches) in diameter). Deionized water was mixed with ethanol, followed by the addition of PEG. Sodium citrate was then added under conditions of vigorous stirring. Eudragit L 100-55 powder was added slowly (in 5 min) under vigorous stirring (500 to 600 rpm), followed by the slow (in 5 min) addition of Methocel A4C powder under vigorous stirring (500 to 600 rpm). After about 10 min, PVP90 powder was slowly added (over 5 min). The high agitation rate was maintained for 5 to 10 min. Carbamide peroxide powder (1 to 2 min) was added and the mixture was stirred to obtain a homogeneous solution (approximately 30 to 60 minutes at 500 to 800 rpm). The solution was then stored over a period of 2 to 5 hours in order to let the air bubbles dissipate.
[000176] The following Examples (16 to 30) in Table 7 provide a comparison between teeth whitening strips that are
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67/80 available for sale and material tapes for the release of an asset for oral treatment, according to the present disclosure. [002] Table 7
Example0 Thickness a (mm) ModuleYoungMPa % Deformation @ RupturThe % % inDeformation © Flow 0% 16 0.2 19 346 60 17 0.2 21 302 267 18 0.2 45 324 35 19 0.2 62 45 31 20 0.2 29 193 141 21 0.08 294 21 8 22 0.19 44 64 39 23 0.13 440 24 8 24 0.2 25 388 22 25 0.2 22 944 16 26 0.18 68 31 27 27 0.41 68 97 83 28 0.94 81 60 25 29 0.87 95 59 24 30 0.24 46 396 7 Ό00177] Examples 16 to 18 are modalities of material tapes
for the release of an asset for oral treatment in accordance with the present disclosure. These Examples were made using Example 12 in Table 3 as the backing layer. Example 17 was aged in a roll stock for 3 weeks longer than Example 16. Example 18 also included a DELNET located between the release liner and the backing layer, as shown in Figure 21.
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68/80 [000178] Example 19 is a commercially available bleaching tape sold by The Procter and Gamble Company under the trademark CREST 3D WHITE WHITESTRIPS ADVANCED SEAL PROFESSIONAL EFFECT (Lot No. 1116BT3).
[000179] Example 20 is a commercially available bleaching tape sold by The Procter and Gamble Company under the trademark CREST WHITESTRIPS 3D WHITE GENTLE ROUTINE (Lot No. 2206BT2).
[000180] Example 21 is a commercially available bleaching tape sold by McNeil-PPC, Inc. under the trademark REMBRANDT STAIN DISSOLVING STRIPS (Lot No. 0192RD).
[000181] Example 22 is a commercially available bleaching tape sold by LG Health and Beauty under the trademark CLAREN DENTAL WHITENING SOLUTION— NIGHT EFFECT (Lot No. 041027).
[000182] Example 23 is a commercially available bleaching tape sold by Lornamead, Inc. under the trademark NATURAL WHITE dSolve (Lot No. T4L039).
[000183] Example 24 is a commercially available bleaching tape sold by Onuge Oral Care (Guangzhou) Limited under the trademark DENTAL WHITENING STRIPS.
[000184] Example 25 is a commercially available bleaching tape sold by Xiamen YYX Trading Co., Ltd. under the trademark HEIDELBERG WHITESTRIPS (Lot No. B 110909).
[000185] Example 26 is a commercially available bleaching tape sold by Walgreen Co. under the trademark WALGREENS DENTAL STRIPS (Lot No. 058021).
[000186] Example 27 is a tape for bleaching
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69/80 commercially available sold by Target Brands, Inc. under the trademark UP & UP ADVANCED PLUS WHITENING STRIPS (Lot n ° 012657 A1).
[000187] Example 28 is a commercially available bleaching tape sold by Wal-Mart Stores Inc. under the trademark EQUATE DENTAL WHITENING STRIPS (Lot No. 021007B2).
[000188] Example 29 is a commercially available bleaching tape sold by The Kroger Co. under the trademark KROGER WHITENING WRAPS (Lot No. 021621B1).
[000189] Example 30 is a commercially available bleaching tape sold by CAO Group Inc. under the trademark SHEER WHITE (Lot No. 120207).
[000190] The method for generating the elongation / deflection strength data for Table 7 is the standard test method ASTM D 882 — Thin Plastic Lamination Tensile Test, as described above, with the following modifications: A load cell is 100 N; The useful length (handle separation) is 2.54 centimeters (1.0 inch); The test speed is 15.0 mm / s; and the specimen dimensions are 6.5 mm wide x 25.4 mm long.
[000191] The following Examples in Tables 8 and 9 provide data for various teeth whitening tapes measured according to the Strip Removal Test described in detail below.
Table 8 - Strip removal results for sample teeth whitening products — amount of material
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70/80 remaining after detachment test
Examples test Material left on glass rods (medium) Material collected (average) Gel Support Gel + Support length (mm) % of lenght (mm) % of lenght Weight(g)Example 19 from Table 7 Initial Detachment 0 0 0 0 0After 30 minutes in water 0 0 0 0 0After 1 hour in water 0 0 0 0 0Example 17 from Table 7 Initial Detachment 0 0 0 0 0After 30 minutes in water 0 0 0 0 0After 1 hour in water 0 0 0 0 0Example 30 from Table 7 Initial Detachment 48 96 40 80 0.0905After 30 minutes in water 48 96 29 58 0.066After 1 hour in water 42 84 21 42 0.0418
[000192] The percentage of length is calculated by weight of material / weight of tape on glass rods / 50 mm.
Table 9 - Strip removal results for products for the
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71/80 bleaching of sample teeth — peeling force
Examples Detachment Force (N) (average) Initial Detachment After 30 minutes in water After 1 hour in water Example 19 from Table 7 0.257 0.2391 0.1861 Example 17 from Table 7 0.4509 0.3751 0.3547 Example 30 from Table 7 1.9849 0.9825 0.9039 Example 20 from Table 7 0.0052 Has no measurement capability Has no measurement capability Example 24 from Table 7 0.0024 Has no measurement capability Has no measurement capability Example 25 from Table 7 0.0077 Has no measurement capability Has no measurement capability
[000193] Consumers, in general, prefer that teeth whitening products are easily removed cleanly from their teeth. One way to compare the ease of removal / clean removal for teeth whitening tapes is to measure the peel strength and the amount of material remaining after the peel test. As shown in Tables 8 and 9, a Strip Removal Test was performed on products for whitening representative teeth and the results of strip removal were calculated.
[000194] In one embodiment, the strips of material for releasing an asset for oral treatment in accordance with the present disclosure may have an initial peeling force greater than about 0.05 N. In another embodiment, the strips of material for the release of a
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72/80 active for oral treatment may have an initial detachment force greater than about 0.10 N. In another embodiment, strips of material for releasing an asset for oral treatment may have an initial detachment force greater than about of 0.20 N. In yet another modality, the strips of material for the release of an asset for oral treatment can have an initial detachment force greater than about 0.30 N. In another modality, the strips of material for the oral treatment release of an asset for oral treatment may have an initial detachment force greater than about 0.40 N. In another embodiment, strips of material for the release of an asset for oral treatment may have an initial detachment force of about 0.05 N to about 1.0 N and, in another embodiment, from about 0.10 N to about 0.60 N. [000195] In one embodiment, the material strips for releasing an asset to oral treatment in accordance with the present disclosure may have less than about 0.05 g of material (gel + backing layer) remaining after an initial detachment test. In another embodiment, strips of material for releasing an asset for oral treatment may have less than about 0.025 g of material remaining after an initial detachment test. In another embodiment, the strips of material for the release of an asset for oral treatment may have about 0.0 g of material remaining after an initial detachment test. In another embodiment, the strips of material for releasing an asset for oral treatment can have about 0.0 g to about 0.05 g of material remaining after an initial detachment test.
Test methods [000196] The test methods and apparatus described below may be useful for testing the modalities of the present description: Two-cycle hysteresis test [000197] This method is used to determine the properties of
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73/80 strips of material, which can correlate with the forces experienced by the consumer during application and use. The two-cycle hysteresis test is performed at room temperature (about 22 ° C). The sample to be tested is cut into a substantially rectilinear shape, for example (approximately 0.20 mm thick, approximately 15 mm wide by approximately 76 mm long). A suitable instrument for this test includes tensile testing equipment from MTS Systems Corp., Eden Prairie, Minn, for example, Model Synergie 400. The instrument interfaces with a computer. TestWorks 4 ™ software controls test parameters, performs data capture and calculations, and provides data graphs and reports.
[000198] The claws used for the test are wider than the sample. The grips are driven by air, being designed to concentrate all the gripping force along a single line perpendicular to the direction of the test tension, having a flat surface and an opposite face from which a semicircle is projected (radius = 6 mm) to minimize sample slippage.
[000199] The load cell is selected so that the measured forces are between 10% and 90% of the capacity of the load cell or the load range used. A 100 Newton load cell can be used. The accessories and claws are installed. The instrument is calibrated according to the manufacturer's instructions. The distance between the grip force lines (usable length) is 50.8 mm (2 inches), which is measured with a steel ruler held next to the claws, unless otherwise specified. The load reading on the instrument is reset to account for the mass of the attachment and the claws. The sample's mass, thickness and base weight are measured before the test is performed. The sample is mounted on the jaws so that it is not loose, and that the measured load is between 0.00 Newton and
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0.02 Newton, unless otherwise specified.
[000200] The method for testing two-cycle hysteresis for tape samples involves the following steps (all deformations are engineering deformations):
(1) Deform the sample by 50% at a constant tensile speed of 5 mm per second;
(2) Keep for 2 minutes;
(3) Reduce the deformation to a deformation of 40%;
(4) Keep for 10 minutes.
[000201] A graph of two cycles is generated. Figure 26 shows hysteresis data from two cycles as measured by the above procedure for Samples 1, 2 and 3. Sample 1 is a current commercial product, Crest 3D White Whitestrips, Advanced Seal, Professional Effect ™ (a product from Procter & Gamble Company, Cincinnati, OH, USA). Sample 2 is a strip of material that has the same adhesive composition as Sample 1, but that has a backing layer that is an elastic film (80% Affinity (PL 1850 by Dow) / 20% LDPE (Petrothene NA 963 In addition, the backing layer of Sample 2 has a thickness of 0.05 mm. Sample 3 is a tape of material according to the present disclosure and includes the same adhesive composition as Sample 1 and the layer of support of Example 15 of Table 1. Additionally, the support layer of Sample 3 is coated with SELF according to a process in which the toothed cylinder (the top cylinder) has teeth having a 0.152 centimeter (0.060 inch) pitch, a tooth height of 0.191 centimeter (0.075 inch) and a tooth spacing of 0.152 centimeter (0.060 inch). The corners of the teeth were further rounded. The corresponding cylinder (bottom cylinder) was a non-toothed cylinder, that is, a cylinder having ridges and grooves and extending circumferentially, similar to that shown in
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Figure 19 above, and engaged at a depth of engagement (DOE) of about 0.114 centimeter (0.045 inch). The SELF application process was carried out at room temperature at a rate of about 18 m / min (58 feet / min).
[000202] As can be seen from Figure 26, the data demonstrates that Sample 1 has a high initial pull force, Sample 2 has a high displacement recovery force and Sample 3 has a low initial pull force and low displacement recovery force. The pulling force is related to the ease of stretching the tape. The lower the traction force, the easier it is to stretch the tape. The displacement recovery force is related to the force remaining on the teeth after the tape is placed over the teeth. The greater the displacement force, the greater the amount of traction tension that can be applied to the teeth, leading, for example, to user headaches.
Strip Removal Test [000203] The Strip Removal Test is described as follows: Equipment • Instron Model 5565 Tester and Instron Bluehill software version 1.9. The tester and software are available from Instron Worldwide, Norwood, MA, USA.
• 500 Newton load cell • Constant angle detachment accessory • 90 degrees available from Instron Worldwide, Norwood, MA, USA.
• Tape support device designed to imitate teeth / mouth.
• Ruler.
• Balance.
• Tweezers and razor blades.
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76/80 • Sample collection container.
Test procedure • The method for generating the detachment test data for Tables 8 and 9 is the standard test method ASTM D 3330 method F — standardized 90-degree angle detachment for pressure sensitive adhesive, as further described below, with the following modifications: The test speed is 15.0 mm / s; and the specimen width is 6.0 mm.
• Obtain a teeth whitening tape product.
• Figure 27 illustrates a detachment tester (Instron Model 5565 tester) and assembly according to standard test method ASTM D 3330 method F used to measure detachment force. The detachment tester 900 includes a 90-degree constant-angle detachment accessory 902 and a tape support apparatus 904 for mounting a teeth whitening tape on it to perform an detachment test.
• The 904 tape support apparatus includes the following: a rectangular Teflon box with dimensions 3.56 cm x 8.89 cm x 12.7 cm (1.4 x 3.5 x 5) (external) and 2.54 cm x 7.87 cm x 11.94 cm (1x3.1x4.7) (internal); seven glass rods that have a length of 11.68 cm (4.6) and an oval shape in cut view of 0.74 cm (0.29) (thickness), 1.37 cm (0.54) (width ) and 0.64 cm (0.25) (flat surface); four rectangular Plexiglass bars measuring 0.74 cm x 2.54 cm x 7.62 cm (0.29 x 1 x 3); four rectangular silicone rubber bars measuring 0.48 cm x 2.54 cm x 7.62 cm (0.19 x 1 x 3); a compacted rectangular cellulose sponge measuring 0.13 cm x 6.86 cm x 7.87 cm (0.05 x 2.7 x 3.1), available from Loew Cornell; sixteen spacers that are 0.05 cm (0.02) thick; two silicone rubber tapes that have
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77/80 dimension of 0.15 cm x 2.54 cm x 7.62 cm (0.06 x 1 x 3); a silicone rubber tape measuring 0.15 cm x 2.03 cm x 11.43 cm (0.06 x 0.8 x 4.5); two metal bars with a dimension of 0.23 cm x 1.91 cm x 9.53 cm (0.09 x 0.75 x 3.75); and a pair of C-shaped clamps.
• Figures 28A-E illustrate the assembly steps of the tape support apparatus 904 as follows: adhere each of the four rectangular Plexiglass bars 910 to the four rectangular silicone bars 912 to form a combined rectangular bar 914 that has the dimension 1.22 cm x 2.54 cm x 7.62 cm (0.48 x 1 x 3), as shown in Figure 28A; place two of the combined rectangular bars 914 on the short sides of the Teflon 906 box, with the plexiglass side down, as shown in Figure 28B; place the 0.15 cm x 2.03 cm x 11.43 cm (0.06 x 0.8 x 4.5) 916 silicone tape between one edge of the box and the two combined rectangular bars 914, as shown in Figure 28B; place the sponge in the box between the two combined rectangular bars 914; place the seven glass rods 908 on top of the combined rectangular bars in the box, as shown in Figure 28C; place all sixteen spacers 920 between the glass rods 908 and between the box and the glass rods 908 so that eight spacers are used on the left side of the box and eight spacers on the right side of the box, as shown in Figure 28C; place the other two combined rectangular bars 914 on top of the glass rods, with the silicone rubber side facing down and align the top rectangular bars 914 with the bottom rectangular bars, as shown in Figure 28D; place a 0.15 cm x 2.54 cm x 7.62 cm (0.06 x 1 x 3) silicone rubber tape on top of each 914 combined rectangular bar; place a metal bar 922 on top of each tape
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78/80 silicone rubber; and place a C-shaped clamp 924 on each side of the box and on top of each metal bar 922, as shown in Figure 28E.
• Once the tape support device 904 is mounted, attach the device 904 to the 902 constant angle detachment accessory 902.
• Inject 50 ml of distilled water into the 904 tape support apparatus. Remove excess water with a paper towel ensuring that there is water between the glass rods and that the top of the glass rods remains moist.
• Cut a 6 mm wide teeth whitening tape product and adhere 50 mm of the sample to the glass rods using finger pressure to ensure that the sample adheres to the glass rods. Attach one end of the sample to the Instron clamp and zero the gauge and force, as shown in Figure 29.
• Start the initial detachment test and collect detachment force data, as shown in Figure 30.
• Once the initial detachment test has been completed (3 samples for each Example product in Tables 8 and 9), the test is repeated for each Example product with the following modifications:
• 30 min immersion - after the sample product is fixed to the Instron clamp and the gauge and force are zeroed, use a syringe to disperse 5 ml of distilled water over the glass rods; leave the sample product immersed in water for 30 minutes; perform the detachment test and collect detachment force data.
• 60 min immersion - after the sample product is fixed to the Instron clamp and the gauge and force are zeroed, use a syringe to disperse 5 ml of distilled water over the glass rods; leave
Petition 870190128150, of 05/12/2019, p. 82/91
79/80 the sample product immersed in water for 60 minutes; perform the detachment test and collect detachment force data.
• Each sample product in Tables 8 and 9 is measured 3 times for each detachment test (initial, 30 min, 60 min) and the reported values are aggregated to calculate an average.
• After each detachment test (initial, 30 min immersion, 60 min immersion) is carried out, the amount of sample material left in the tape support device is determined. First, the length of the gel layer and the length of the support layer remaining on the glass rods are measured using a ruler.
• The sample is cut at the intersection of the sample and the glass rods. Weigh tweezers, razor blade and collection container using a scale. Note the weight and tare of the balance. Use the razor blade and tweezers, scrape the sample material left on the glass rods in the collection container. Once finished, weigh the tweezers, the razor blade and the collection container again. Note the weight. 3 samples are measured in this way for each sample product in Table 8 and the reported values are aggregated to calculate an average.
[000204] The dimensions and values presented in the present invention should not be understood as being strictly limited to the exact numerical values mentioned. Instead, unless otherwise specified, each of these dimensions is intended to mean both the mentioned value and a range of functionally equivalent values around that value. For example, a dimension shown as 40 mm is intended to mean about 40 mm.
[000205] Each of the documents cited in the present invention, including any cross-reference, patent or patent application
Petition 870190128150, of 05/12/2019, p. 83/91
80/80 related, is hereby incorporated in its entirety, by way of reference, unless expressly excluded or otherwise limited. The mention of any document is not an admission that it is prior art in relation to any invention presented or claimed in this document, or that it, alone or in any combination with any other reference or references, teaches, suggest or present any invention like that. In addition, if there is a conflict between any meaning or definition of a term mentioned in this document and any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document will take precedence.
[000206] Although particular embodiments of the present invention have been illustrated and described, it should be apparent to those skilled in the art that various other changes and modifications can be made without departing from the character and scope of the invention. Therefore, it is intended to cover in the appended claims all such changes and modifications that fall within the scope of the present invention.

权利要求:
Claims (7)
[1]
1. Extensible product for dental treatment, characterized by the fact that it comprises:
a) a backing layer of structural film similar to elastic that has an average thickness of 0.003 millimeter to 0.127 millimeter (0.1 mil to 5.0 mil), the film including:
i. 50% to 90% by weight of the high density polyethylene film; and ii. from 10% to 50% by weight of the low density linear polyethylene film; and
b) a composition for oral treatment arranged on the film, the composition for oral treatment including:
1. 50% to 99.9% by weight of an adhesive polymer composition; and ii. from 0.1% to 50% by weight of the composition of an asset for oral treatment.
[2]
2. Extensible product for dental treatment, according to claim 1, characterized by the fact that the extensible product for dental treatment exhibits one of a Young's modulus less than 50 MPa, a deformation at break of at least 250% and a deformation at flow of at least 30%, and a Young's Modulus less than 50 MPa, an initial detachment force greater than 0.05 N and less than 0.05 g of material remaining after an initial detachment test as measured according to a Tape Removal Test.
[3]
3. Method of applying an asset for oral treatment to a plurality of adjacent teeth, characterized by the fact that it comprises the steps of:
a) provide a tape of material that has a support layer and a composition for oral treatment arranged on the
Petition 870190128150, of 05/12/2019, p. 85/91
2/3 support layer, the composition for oral treatment includes an asset for oral treatment, the material tape exhibits one of a Young's modulus less than 50 MPa, a deformation at break of at least 250% and a deformation in the flow of at least 30%, and a Young's Modulus less than 50 MPa, an initial detachment force greater than 0.05 N, and less than 0.05 g of material remaining after an initial detachment test as measured according to a Test Tape Removal;
b) adjusting the size of the material tape so that the tape is large enough to fit individually to a plurality of adjacent user teeth when placed against the teeth; and
c) applying the material tape to the plurality of adjacent teeth.
[4]
4. Method of application of an asset for oral treatment, according to claim 3, characterized by the fact that the asset for oral treatment is a teeth whitening asset and is preferably selected from the group consisting of peroxides , metallic chlorites, perborates, percarbonates, peroxyacids and a combination thereof.
[5]
5. Method of releasing an asset for oral treatment, according to claim 4, characterized by the fact that the teeth whitening asset is selected from hydrogen peroxide, calcium peroxide, carbamide peroxide and mixtures thereof.
[6]
6. Extensible product for dental treatment, as defined in claim 1 or 2, characterized by the fact that the oral treatment asset is a teeth whitening asset and is preferably selected from the group consisting of peroxides, chlorites metals, perborates, percarbonates, peroxyacids and
Petition 870190128150, of 05/12/2019, p. 86/91
3/3 combination thereof.
[7]
7. Extensible dental treatment product, according to claim 6, characterized by the fact that the teeth whitening asset is selected from hydrogen peroxide, calcium peroxide, carbamide peroxide and mixtures thereof.

类似技术:

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同族专利:

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公开号 | 公开日

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CA2888199C|2019-06-25|

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US20190254939A1|2019-08-22|

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AU2013331240A1|2015-05-07|

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AU2013331240B8|2016-11-24|

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US20160074290A1|2016-03-17|

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US20140178443A1|2014-06-26|

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MX361101B|2018-11-27|

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ES2693775T3|2018-12-13|

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RU2646502C2|2018-03-05|

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WO2014062879A2|2014-04-24|

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RU2015114077A|2016-12-10|

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JP2017159086A|2017-09-14|

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EP2908798A2|2015-08-26|

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BR112015008666A2|2017-07-04|

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AU2013331240B2|2016-11-03|

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US10285916B2|2019-05-14|

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WO2014062879A3|2014-12-31|

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EP2908798B1|2018-08-22|

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JP2016502415A|2016-01-28|

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CN104736133A|2015-06-24|

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AU2013331240A8|2016-11-24|

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PL2908798T3|2019-02-28|

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CN104736133B|2020-07-10|

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MX2015004588A|2015-07-21|

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CA2888199A1|2014-04-24|

---

US10285915B2|2019-05-14|

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法律状态:
2018-03-06| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

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2018-03-13| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

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2018-03-20| B06I| Technical and formal requirements: publication cancelled|Free format text: ANULADA A PUBLICACAO CODIGO 6.6.1 NA RPI NO 2462 DE 13/03/2018 POR TER SIDO INDEVIDA. |

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2019-06-18| B07A| Technical examination (opinion): publication of technical examination (opinion)|

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2019-10-08| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|

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2020-02-04| B09A| Decision: intention to grant|

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2020-04-07| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 17/10/2013, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US201261714828P| true| 2012-10-17|2012-10-17|

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PCT/US2013/065365|WO2014062879A2|2012-10-17|2013-10-17|Strip for the delivery of an oral care active and methods for applying oral care actives|

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