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    • 专利摘要:
    Splint and procedure for the planning of dental implant surgery and/or guided placement of prostheses on implants. The present invention relates to a splint and a method used to obtain optimal planning of dental implant surgery and/or guided placement of prostheses on implants, wherein said splint has marker elements (1) of the position of the prostheses. Future pieces and with a spatial reference system (3) so that once fixed removably to the upper jaw (4) and/or lower (5) of the patient, both a radiological exploration and a scan of the patient's mouth are performed in order to obtain as many digital files that, once aligned, provide a three-dimensional digital image of the patient's mouth as close to reality as possible from which the technician or prosthetic surgeon can perform the implant planning. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2612308A2
    申请号:ES201531638
    申请日:2015-11-12
    公开日:2017-05-16
    发明作者:Luis CUADRADO DE VICENTE
    申请人:I2 Implantologia S L；I2 Implantologia SL；
    IPC主号:
    专利说明:

    Splint and procedure for the planning of dental implant surgery and / or guided implant placement on implants
    Object of the invention
    The present invention relates to a splint intended to be placed in the patient's mouth and which will serve for the planning of the surgery of the different dental implants as well as the subsequent placement of the prostheses on said implants.
    More specifically, the splint of the invention has such a design that it can be fixed to the soft tissue or oral mucosa of the upper or lower jaw of the patient to be scanned and also comprises a material detectable by radiological examinations, providing information on the future position of the Dental pieces of the patient's definitive prosthesis.
    The invention also includes both the procedure for planning guided surgery for the placement of dental implants and the procedure for planning the definitive prosthesis that will be placed on the implants of the patient, both based on the splint of the invention.
    Background of the invention
    As is known, the field of dentistry, and more specifically that of dental implantology, has undergone continuous development in recent years. This development is due, to a large extent, to the emergence of powerful design software tools and modern manufacturing systems, which achieve surprising results both aesthetically and functionally, all in a minimum time that allows Patients recover chewing and aesthetic function in a short period of time.
    In addition, other advantages are derived from the use of these techniques, among which is the reduction of the artisanal component of dentistry in those facets or aspects of treatments in which accuracy and precision are crucial.
    This is the particular case of the surgery planning for the placement of dental implants and / or the design of the prostheses that will be placed in said implants, where the use of digital techniques for taking data from patients' mouths It has become an increasingly widespread practice due to its high reliability and good results.
    This greater reliability and accuracy has only been possible after the integration and computerized treatment of the design and manufacturing processes in which both elements, software and hardware, work with maximum accuracy.
    Thus, in general, the main phases of dental rehabilitation with implants are as follows:
    A first phase in which the implants that serve as an anchor for the dentures of the dental pieces that need to be replaced are placed on the patient's gum; A second phase of sampling and measurements of the patient's mouth from which dental models or replicas of the mouth are made with implants already placed; A third phase where, from the model of the previous phase, the prosthesis is constructed to replace the dental piece and that will be fixed to the implant of the first phase and; finally A fourth phase of placement of the prosthesis in the mouth.
    As is evident, the temporal evolution and the proper functioning of the assembly formed by the implant and the prosthesis in the patient's mouth will depend largely on the design and manufacture of the prostheses and, therefore, on the manufacturing stage thereof. , which begins by taking measurements from the patient's mouth, which should be as accurate as possible.
    However, until recently or even today in some very traditional dental systems, both the planning of the surgery for the placement of the dental implants and the design of the prostheses that will be placed in these implants, started from a first Impression or data collection from the patient's mouth
    totally manual, from which a model of the patient's mouth was obtained on which the prostheses were then designed.
    More specifically, this known technique consists in making the patient bite a deformable silicone-like material, on which the positions and shapes of the dental pieces will be engraved or marked and, above all, that of transfer elements that indicate the position of the implant on which the prosthesis will then be fixed. Normally, the physical models of the mouth are made in plaster and the replica of the implants in some metallic alloy.
    However, it is also known that this obtaining of data is defective due both to the deformations produced by removing the deformable silicone-like material from the patient's mouth and during the demolding of the plaster model, as well as to the characteristics of the materials used, which have different tolerances and non-uniform degrees of contraction. All these defects of the procedure introduce errors in the position of the implants that result in a final placement of the implants in the mouth defective or even harmful to the patient.
    In order to avoid these errors, the planning process introduced the use of laboratory scanners that digitized the plaster model created from the aforementioned traditional printing, which allowed to partially reduce the errors made in the process completely manual described above.
    This technique, although it is currently used, is not at all advisable because it still depends on the manual process of the impression taking, which makes it suffer from a lack of adequate precision that can lead to a job that is not entirely satisfactory.
    Thus, to solve this problem and minimize errors in data collection, intraoral scanners are used, which allow obtaining detailed digital information both the geometry of the mouth itself and that of the dental pieces and implants that the patient may have placed. Subsequently, this information is transformed into a digital file with which through the corresponding software you can work to create a digital model of the patient's mouth that can later be materialized in an exact physical model through rapid prototyping technologies,
    milling, etc.
    However, current dental techniques go even beyond mere recreation
    digital of the patient's mouth to build a mold on which to work or the manufacture of the dental pieces themselves, as they consist of both the planning of the surgery through the so-called guided surgery systems or techniques (CG) by means of which the different dental implants will be placed, as well as the planning of the posterior placement of the prostheses on said implants by means of the so-called guided prosthesis (PG) systems.
    Specifically, the current CG and PG systems are composed of software that allows the virtual placement of dental implants in the planning files that we have provided to this software. In addition, in many of them you can already design the prostheses that will be placed on the patient at the end of the actual placement of the implants in the patient and that will be fixed to the same implants.
    Therefore, it is again especially relevant that the process is of maximum accuracy or else a defective implant clinical placement will be carried out that may cause discomfort or even damage to the patient or, simply, the prostheses designed and developed within of that CG software cannot be placed at the end of the actual surgery.
    In fact, the very concept of guided CG surgery on implants is changing since, in reality, the only purpose of placing the implants in a guided way is to place them in the optimal position that marks the future prosthesis of the patient and, most of Sometimes, being able to place these guided prostheses at the end of the implant placement procedure. Thus, the most correct way to call these new techniques would be that of implant-guided prosthesis systems.
    These new techniques are therefore based on an optimal acquisition of data in order to be able to build as faithfully as possible the digital model of the patient's mouth and plan both the surgery and the design of the prostheses.
    As a result of the importance of conveniently placing all the elements in the oral space in order to create a digital model faithful to reality, techniques have been developed that help to optimally position the implants already placed, for which elements are used radiopaque well positioned on the implants or even inserted into said implants, so that they are detected in the radiological tests and their position can be perfectly determined by the data processing software used. Examples of some of these techniques can be seen in, for example, ES 2364393 or ES 2431313.
    However, in order to plan both the surgery and the design of the prostheses, techniques that combine digital images obtained through different systems are used lately. More specifically, images obtained on the one hand are combined by radiological techniques (RX, TAC, CBCT, etc.) and, on the other, with those obtained by surface scanners. Thus, once all the information has been obtained, the system combines or aligns the different types of images obtained with the two systems in order to achieve an optimal "best-fir" fit between them, with which to subsequently create an exact virtual model of the The patient's mouth, not only externally (morphology of the oral cavity, gums, existing parts, etc.), but also of the maxillofacial structure and the bone bed of said patient.
    Thus, the workflow of these techniques is, in general, the following:
    1. Acquisition of data from the patient's mouth by:
    to. A scan to obtain data on the gum, implants and existing parts in the patient's mouth, which will generate 3D files like STL or similar.
    This, as already said, can be done in two ways:
    i. Obtaining conventional impressions to make a plaster model of the patient's mouth and subsequently scan said model in the dental laboratory; or
    ii. Using an intraoral scanner.
    b. A radiological test (RX, CT, CBCT, etc.) to obtain information about the patient's bone structure.
    2. Combination or alignment (best-fit) of the files obtained through previous techniques to create a virtual model as accurate as possible.
    This alignment of the files, also called "best -tit", is done either manually by the dentist or automatically if the software allows it. In both cases, said alignment is based on the search for points in common between the images obtained radiologically or by means of the scanner so that the system can superimpose them 0, using the English term, that the system makes the paste or sew "Stiching / matching "of the images to compose the final complete image. These points in common can be dental pieces, the implants themselves or parts of the implants, etc.
    However, even leaving aside the cases in which the data are not entirely accurate if the scan is performed on the plaster model indicated above (see point 1.ai), these modern techniques still suffer from several important drawbacks. that make the result not optimal.
    On the one hand, one of the reasons that results in a non-optimal result is that the alignment phase of the different digital files (best-fit) is wrong because the implantological planning software developments cannot perform the alignment in the cases in which there are few reference elements, what happens when the patient has very few teeth.
    This is mainly due to the fact that continuous areas of the patient's mouth, with the same hue and without irregularities, such as a gum zone, do not provide sufficient information so that during the scan the system can discriminate between nearby points. similar and make a correct stiching / matching of each of the images obtained by the scanner, obtaining a distorted final virtual image and, therefore, an incorrect subsequent alignment with the virtual image from the radiological test.
    On the other hand, an even more unfavorable case is when the patient is totally edentulous, that is, he does not have any dental pieces in his mouth. Under these conditions it is practically impossible to obtain a reliable image through the scanner that can subsequently align with the radiological images. In other words, the digital image obtained by means of the scanner does not contain any information or reference points that allow the program or the technician to identify this image with that obtained radiologically to obtain a complete digital model that allows the planning of surgery to Place the implants
    So far, in the state of the art this problem is being solved in a
    mainly handmade and, therefore, not very precise. For this reason, the results
    obtained for this type of patients are very poor.
    10 Specifically, the method currently employed consists in the realization of a resin prosthesis from the patient's mouth by the traditional method described above. To that prosthesis, markers detectable by radiological examinations are added. Next, radiological examinations are performed, one to the prosthesis separately and another to the patient's mouth with the prosthesis in place. Since the two files have elements in
    15 common markers it is already possible to align between the two digital images.
    However, the fact that only radiological images are used is detrimental to accuracy, since the files obtained from the radiological examinations are of
    20 less precision and accuracy than the STL files provided by the scanners. For this reason, the splint for guided surgery that will be obtained from digital images obtained only through radiological examinations will also be less accurate.
    25 In addition, as is evident, the lack of accuracy caused by the use of manual prints due to the problems inherent in this technique mentioned above is added to the above.
    Description of the invention
    The splint and procedure for the planning of dental implant surgery and / or guided placement of prostheses on implants of the present invention solves the aforementioned problems of the prior art and also constitutes a versatile tool and working method, adaptable to each user and customizable, so it achieves a high degree of precision and optimal results.
    Specifically, thanks to both the splint and the method of the invention, a new dental protocol is established, both for guided dental implant surgery, and for the design of dental prostheses.
    More specifically, the splint of the invention is intended to be temporarily fixed to the upper or lower jaw of the patient and which comprises at least one marker element of the future position of the dentures that the patient will wear. Specifically, positioning at least one marker element in the splint of the invention will have sufficient information on basic points of said design such as vertical dimension, occlusion and vestibular plane, as well as dental aesthetic position.
    Even more specifically, the vertical dimension refers to the space occupied by the upper and lower teeth and gums. Thus, if, for example, only the splint is placed in the lower jaw, with the upper one missing, said lower splint also marks the vertical dimension that the upper one must occupy, that is, the space available below it. In other words, either of the two splints, upper or lower, will mark the available vertical space.
    On the other hand, the splint of the invention also gives information about occlusion, that is, how to articulate the upper teeth with respect to the lower ones.
    Finally, thanks to the splint of the invention, the vestibular plane of the teeth is defined, since the position of the external face of the element or the marker elements of the splint informs of the dental arch or position that the teeth should occupy in the anterior direction. posterior (or, in other words, vestibule -lingual) and is also limited by the vertical dimension and occlusion.
    In other words, by having marker elements of the position of future pieces, the splint of the invention gives information about the space occupied by each dental arch (gum and teeth) while informing the laboratory technician of the space that has available to place the other pieces and therefore of how they will contact the pieces that the patient has in the other maxillary antagonist (occlusion) and the anteraposterior position of the same. In short, the splint transmits the space to be restored and filled with teeth, so if the patient is a total edentulous it will be necessary to mark the available space using splints, one for each jaw.
    As for the marker elements, in the case of being several these are related to each other through a junction zone that ensures that the relative position between them does not vary as a result of their manipulation and where said junction zone also allows the fixation of the splint to the patient's jaw. On the other hand, said junction zone also comprises a spatial reference system which, as will be explained later, on the one hand facilitates data collection and on the other will serve as a control system for the accuracy of the result obtained.
    In addition, said marker elements in turn comprise a radiopaque material, that is, detectable by means of radiological tests so that, as will also be explained later, the information they provide about the position of future prostheses that the client will wear is detectable. by means of radiodiagnostic tests.
    Thus, once the splints have been created with the position of at least two dental pieces that the patient will wear in the future, the following procedure will be followed:
    Fixation of the splint by its area of attachment to the upper jaw and / or the lower jaw through removable fixing means; Performing a radiological examination or study of the patient's jaw or jaws by means of CBCT, CT or similar, obtaining a file that will contain the information of the future position of the prostheses that the patient will wear, indicated by the splint marker elements; Performing a scan of the patient's mouth, either by direct intraoral scanner or scanning a plaster model, for the acquisition of images and data of the maxilla and therefore also contains the images of the splint of the invention with its corresponding splint marker elements; Removal of the splint;
    As a result, two digital files are obtained from the patient's mouth:
    - A file obtained by means of the radiological test with the information on the bone bed and, in the case that the patient has dental pieces or implants also with them; Y
    - Another file obtained by means of the scanner with photographic information of the oral cavity with its different tissues, dental pieces or implants, if any.
    In addition, each of these files will contain, thanks to the splint of the invention, information on the position of the patient's future pieces, the occlusion and the intermaxillary relationship provided by the splint marker elements.
    Next, both files will be imported into the guided surgery software program, which will proceed to the alignment or "best -fit" of both files to create the complete digital three-dimensional image of the patient's mouth including, thanks to the marker elements of the splint, the definitive three-dimensional position of the patient's dental pieces in terms of aesthetics, occlusion and intermaxillary vertical dimension, which will allow the prosthetic technician to perform the correct implantological planning.
    In addition, as already mentioned, the area of union of the splint to the patient's maxilla, which in turn also constitutes the union of the marker elements with each other, comprises a spatial reference system that on the one hand facilitates data collection and on the other it serves as a control system for the accuracy of the result obtained.
    More specifically, said reference system facilitates the task of scanning because it constitutes an irregularity of the material of which the marker elements are composed, which allows the system software to identify each of the points more quickly, better than if it were a continuous element, without marks, as with the patient's own gum, which, as stated, has few structural, tonal irregularities, etc. between immediately continuous points.
    This faster and better identification during scanning also contributes, of course, the marker elements themselves, which will be easily detectable by the scanner, especially if, for example, they materialize in a different color from the rest of the elements, both the splint itself as from the patient's mouth.
    Continuing with the double utility of the spatial reference system, in addition to facilitating scanning by "dehomogenizing" the surface to be scanned, it is a control system for the accuracy of the result obtained, since when checking the result of said scanning, it is that is to say, the digital image of the patient's mouth, it will be possible to verify whether said reference system appears or not distorted, both in its position and in its form, which if indicated will indicate that the scan has not been satisfactory and therefore The digital image obtained is not true to reality, introducing errors that, if maintained, would lead to a subsequent improper (best-fit) alignment with the file from the radiological test and, therefore, to a final digital model of the mouth of the wrong patient that
    10 will result in surgery planning and design of the wrong prostheses.
    Thus, thanks to the use of the splint and method of the present invention, it is possible:
    • Perform a scan quickly and reliably; 15 • Check that the files from the scan are correct and
    • Perform a perfect (best-fit) alignment between the files coming from the
    Scanning and radiological test, even in complex cases of patients with few or no (total edentulous) tooth piece.
    20 From there, the prosthetic technician or surgeon can virtually plan the case with the help of the corresponding software, that is, proceed with:
    • The design of provisional prostheses;
    • The virtual placement of the implants and, finally, when everything is correct,
    25 • Creating the virtual surgical splint that contains the necessary elements for a safe milling of the implants, leaving them in the planned position and being able, therefore, to place the provisional prostheses designed in the first step.
    30 Subsequently, said virtual surgical splint may be manufactured by means of any system known as milling, rapid prototyping, etc., to begin the actual dental treatment in the patient's mouth.
    Description of the drawings
    To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, this descriptive report is attached, as an integral part thereof, of a set of drawings, in which with character Illustrative and not limiting, the following has been represented:
    Figure 1 shows a perspective view of the splint of the invention for the case in which it comprises three marker elements and is intended to be placed in the upper jaw, as well as a detail of the spatial reference system located on one of the Union zone arms.
    Figure 2 shows a schematic view in bottom plan of the splint of the invention of Figure 1 placed on the patient's jaw.
    Figure 3.- Shows a schematic view in front elevation of the patient's mouth where the splint of the invention of Figure 1 is placed on the upper jaw and where it is seen how it defines the future placement of the prostheses and occlusion on the lower jaw, which has its own dental pieces.
    Figure 4.- Shows a schematic perspective view of the splint of the invention for the case in which it comprises three marker elements and is intended to be placed in the lower jaw, as well as a detail of the spatial reference system located on the skirt from the junction zone.
    Figure 5 shows a schematic top plan view of the splint of the invention of Figure 1 placed on the patient's jaw.
    Figure 6 shows a schematic front elevation view of the patient's mouth in the case in which both the upper and lower jaw have the splint of the invention.
    Preferred Embodiment of the Invention
    In view of the aforementioned figures and in accordance with the numbering adopted, an example of a preferred embodiment of the invention can be observed therein, which comprises the parts and elements indicated and described in detail below.
    Specifically, as already stated, the splint comprises at least one marker element
    (1) that gives or gives information about the future position of many other prostheses that the patient will wear and that may materialize in different materials, such as resin.
    To be detected by radiological tests, these markers (1) will also comprise a radiopaque material, such as barium sulfate, which mixed in a weight ratio of for example 10% homogeneously with the resin or material in the The splint that is manufactured will provide information regarding the vertical dimension, occlusion and vestibular plane, as well as the dental aesthetic position.
    On the other hand, according to a possible embodiment, not only the markers (1) but the entire splint may incorporate the homogeneously mixed radiopaque material in its composition so that all of it is detectable during the radiological test, which will allow obtaining additional information that will allow , for example, perform the alignment between the files based on positions other than those that constitute the dental pieces to be restored.
    According to a preferred embodiment of the invention, said marker elements (1) will be constituted by geometric shapes such as a cylinder or a prism of triangular, square section, etc., which, thanks to their well-defined vertices and edges, will accurately mark the basic points of the aforementioned design: vertical dimension, occlusion and vestibular plane, as well as the dental aesthetic position.
    Alternatively, said element or marker elements (1) may present the definitive shape of the tooth with which the prosthesis will subsequently be manufactured on an implant, as shown in the example shown in the figures.
    The marker elements (1) are also related to each other through a junction zone (2) that ensures that the relative position between them does not vary as a result of their manipulation, placement in the patient's jaw, etc. Said junction zone (2) fulfills, as has been said, with a double function, since in addition to constituting the junction between the marker elements (1), it is the area through which the splint is fixed to the upper jaw (4 ) or lower (5) of the patient during radiological examination and scanning.
    Thus, the junction zone (2) has a shape that guarantees a perfect fit on the soft tissue of both jaws (4,5), specifically:
    • In the event that the splint is intended to be fixed on the upper jaw (4) of the patient, as shown especially in Figures 1 and 2, the joint area
    (2) has, according to a preferred embodiment shown in the figures, a shape with arms that, depending on the number of marker elements (1) with which said splint has, will have a cross, star, etc.
    • In the event that the splint is intended to be fixed on the lower jaw (5) of the patient, as shown especially in Figures 4 and 5, the joint area
    (2) has, according to a preferred embodiment shown in the figures, a skirt form also adapted to fit on the soft tissue.
    In both cases, the fixation of the splint and maxilla (4.5) of the patient can be carried out, for example, with the help of one or more osteosynthesis screws, "pins" or similar not shown, provided that its stability is guaranteed in the mouth. Also, another possibility is that said fixation between splint and maxilla (4,5) is done by means of medical use adhesives of the cyanoacrylate type. In addition, these two fixing systems, screws and adhesives, can be combined to achieve optimum stability of the splint in the mouth.
    On the other hand, the junction zone (2) in turn comprises a spatial reference system (3) intended both to facilitate data collection during scanning, allowing the scanner to read better, as well as to serve as a control system for the accuracy and correct dimensioning of the image obtained during said scanning.
    According to a preferred embodiment shown in the details of Figures 1 and 4, the spatial reference system (3) is formed by a graduated scale in any unit of length, for example in millimeters, in such a way that it is possible to check whether in the image The proportion of said scale is maintained digitally or it presents deformations or errors and, at the same time, thanks to the irregularity that the scale itself represents in relation to the junction zone (2) on which it is incorporated and / or the gum of the patient, constitutes a superficial heterogeneity easily detectable by the scanner.
    The splint of the invention may be manufactured in several ways, including, preferably:
    1.-From patient study models obtained with conventional impressions of the patient's jaw, in which a conventional design (a tooth assembly) of the patient's final prosthesis has been made; where also:
    o Parts that are not considered necessary to transmit the information indicated above are eliminated, using only those strategically located and therefore if they contain such information.
    o Next, these pieces necessary to transmit the information are replaced by the marker elements (1) with radiopaque material connected to each other by the joining area (2) in resin or similar.
    Thus, as previously mentioned, the final design of the splint will depend on whether it will be placed on the upper jaw (4), in which case they will be arranged in the joint area (2) as a series of cross-shaped arms , star, etc. depending on the number of marker elements (1).
    In the event that the splint is intended to be fixed on the lower jaw (5) of the patient, the joint area (2) has, according to a preferred embodiment shown in the figures, a skirt form also intended to adjust on the soft tissue.
    2.-Through digital design from a file from an intraoral scanner
    or laboratory, where:
    o Records are taken by means of an intraoral scanner, directly from the patient's mouth and, in the computer, by means of CAD design software, the splint of the invention is created with the same steps that have been described for the route conventional indicated in point 1 above. In this case the splint will be printed by a 3D printer, a laser sintering equipment, an external milling device, etc .; or
    o Records are taken through a desktop scanner or laboratory. For this, a conventional impression is taken and a study model in plaster or resin would be manufactured. This will be subsequently scanned using the desktop scanner, creating a file that can be imported into the CAD design software, starting the same flow as in the case of proceeding from the intraoral scanner from the previous point.
    In addition, in both cases 1 and 2, as already stated, not only the marker elements (1), but the entire splint, may incorporate the radiopaque material so that all of it is detectable during the radiological test, which will allow obtaining information additional.
    On the other hand, also in both types or forms of manufacture or in any other used, the relationship between the marker elements (1) thanks to the junction zone (2) will be carried out in such a way that large free zones are created between said marker elements (1), thus leaving most of the gum uncovered in the patient's mouth, where the implants will be placed. In other words, the splint of the invention will present, free of marker elements (1), those areas of mucous support on the patient's mouth where the implants, the prosthesis are to be placed, or where the implants are already placed so that they do not involve interference.
    Once the splints are created, the procedure described above will be followed:
    Fixation of the splint by its area of attachment to the upper jaw (4) and / or the lower jaw
    (5) through removable fixing means; Performing a radiological examination or study of the maxillary or maxillary (4,5) of the patient by means of CBCT, CT or similar, obtaining a file that will contain the information of the future position of the prostheses that the patient will carry, indicated by the marker elements of the splint Performing a scan of the patient's mouth, either by scanner
    direct intraoral or scan of a plaster model, for the acquisition of
    5 images and data of the maxilla and therefore also contains the images of the splint of the invention with its corresponding splint marker elements; Checked if the digital image obtained by scanning shows errors by means of the spatial reference system (3) of the splint. Obtaining two digital files from the patient's mouth, one
    10 by means of the radiological test and another by means of the scanner and both with information on the position of the future pieces of the patient provided by the marker elements (1), files that will then be aligned (best-fit) to create the complete digital three-dimensional image and exact from the patient's mouth, which will allow the prosthetic technician to perform the correct implantological planning.
    15 Removal of the splint;
    权利要求:
    Claims (11)
    [1]
    1.-Splint for the planning of dental implant surgery and / or guided placement of prostheses on implants, suitable for coupling to the upper (4) or lower (5) maxilla of the patient and characterized by comprising:
    at least one marker element (1) with information on the future position of others
    so many prostheses that the patient will wear, where said marker element (1) in turn
    it comprises a radiopaque material detectable during a radiological test;
    a junction zone (2) to be fixed to the maxilla (4,5) of the patient and at the same time
    relates the marker elements (1) to each other; Y
    a spatial reference system (3) to facilitate data collection during
    scanning and serving as a control system for the accuracy of the digital image obtained
    from said scan.
    [2]
    2.-Splint according to claim one, characterized in that the marker elements (1) contain information on the vertical dimension of the arches, occlusion and the vestibular plane.
    [3]
    3.-Splint according to claim 1 or 2, characterized in that the marker elements (2) have the final shape of the tooth with which the prosthesis will subsequently be manufactured on implant.
    [4]
    4.-Splint according to claim 1 or 2, characterized in that the marker elements (2) have a geometric shape.
    [5]
    5.-Splint according to any of the preceding claims, characterized in that the spatial reference system (3) is formed by a graduated scale in a unit of length.
    [6]
    6.-Splint according to any of the preceding claims, characterized in that the spatial reference system (3) is located on the junction zone (2).
    [7]
    7.-Splint according to any of the preceding claims, characterized in that it all comprises radiopaque material detectable during the radiological test and not only in the marker elements (1).
    [8]
    8. Procedure for the planning of dental implant surgery and / or guided placement of prostheses on implants characterized in that, once a splint is manufactured according to any of the preceding claims 1 to 7 and removably fixed to the upper jaw (4 ) and / or the lower jaw (5) of the patient, includes the steps of:
    Perform a radiological examination of the patient's jaw or jaws (4,5) to obtain a digital file that will contain the information of the future position of the prostheses that the patient will wear, indicated by the marker elements (1) of the splint; Perform a scan to obtain another digital file with the digital images of the jaw or jaws (4,5) of the patient that will also contain the digital images of the splint with its marker elements (1); Check if the digital image obtained by scanning shows errors by means of the spatial reference system (3) of the splint to, if so, repeat the scan. Align the digital files obtained through the previous radiological test and scan to create the three-dimensional digital image of the patient's mouth; and finally Perform the implantological planning from the three-dimensional digital image obtained from the previous step.
    [9]
    9. Procedure for planning dental implant surgery and / or guided placement of prostheses on implants according to claim 8, characterized in that the maxillary or maxillary (4,5) scan of the patient is performed by direct intraoral scanner.
    [10]
    10. Procedure for the planning of dental implant surgery and / or guided placement of prostheses on implants according to claim 8, characterized in that the scan of the patient's jaw or jaws (4,5) is performed on a plaster model.
    [11]
    11.-Procedure for planning dental implant surgery and / or guided placement of prostheses on implants according to any of claims 7 to 10,
    characterized in that the fixation of the splint on the jaw or jaws (4,5) of the patient is done so that the areas where the implants, the prosthesis, or where they are placed are already placed are not covered in the patient's mouth previously implants so that they do not involve interference.
    类似技术:
    公开号 | 公开日 | 专利标题
    JP6619321B2|2019-12-11|Dental implant positioning
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    ES201531638A|ES2612308B1|2015-11-12|2015-11-12|Splint and procedure for the planning of dental implant surgery and / or guided implant placement on implants|ES201531638A| ES2612308B1|2015-11-12|2015-11-12|Splint and procedure for the planning of dental implant surgery and / or guided implant placement on implants|
    EP16713493.1A| EP3375401B1|2015-11-12|2016-02-11|Template and method for planning the surgery of dental implants and/or guided placement of a prosthesis on implants|
    ES16713493T| ES2802523T3|2015-11-12|2016-02-11|Splint and procedure for planning dental implant surgery and / or guided prosthesis placement on implants|
    PCT/ES2016/070080| WO2017081337A1|2015-11-12|2016-02-11|Template and method for planning the surgery of dental implants and/or guided placement of a prosthesis on implants|
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