• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    PILLAR AND METHOD OF FIXING A PILLAR TO A DENTAL IMPLANT. The present invention is related to a pillar (10,100), comprising: a ceramic part (12, 112) and a metallic adapter (14, 114), removably fixable to the ceramic part, in which the metallic adapter has a connection interface conical (16) for fixation to a dental implant (18). the present invention also relates to a method of fixing a abutment (10) to a dental implant (18).
    公开号:BR112015015009B1
    申请号:R112015015009-8
    申请日:2013-12-17
    公开日:2020-12-08
    发明作者:Fischer Thomas；Peterson Henrik；Sollberger David；Eriksson Thomas；Jorneus Lars；Haus Adrian；Brunell Mikael
    申请人:Nobel Biocare Services Ag；
    IPC主号:
    专利说明:

    [001] The present invention is related to a pillar. The invention also relates to a method of attaching an abutment to a dental implant.
    [002] The state of the art includes zirconia abutments for dental implants with conical connection. Thus, for static purposes, it may be desired to have the entire zirconia abutment. However, it may also be desirable to improve the strength of said pillar.
    [003] The present invention is defined in the attached independent claims. The modalities are defined by the attached dependent claims.
    [004] In accordance with an aspect of the present invention, a pillar is provided comprising: a ceramic part and a metallic adapter removably attached to the ceramic part, wherein the metallic adapter has a conical connection interface with a dental implant.
    [005] By providing a non-brittle metallic adapter that has the conical connection interface aimed at the dental implant, the strength of the abutment can be improved. In addition, a high aesthetic aspect is maintained due to the ceramic part. Also, since the metal adapter is removably attached to the ceramic part, it can be conveniently removed from the ceramic part, for example, when porcelain is fused to the ceramic part, so the metal adapter is not heated. It should be noted that metal adapters / metal portions are known from the citations of patent documents WO 2004/002358, US 6,168,435 and US 2012/077150, however, not having a conical connection. Also, the metal adapter cited in patent document WO 2004/002358 is not able to withstand load - only to prevent rotation. In addition, the metal portions mentioned in documents US 6,168,435 and US 2012/077150 are shown as not removably attached to the ceramic part.
    [006] The metallic adapter may comprise at least one flexible arm, with a projection adapted to be pressed against a side wall and / or pressed into a corresponding recess (if any) of the ceramic part, to secure the metallic adapter to the part ceramic in the coronal-apical direction, in which the metallic adapter comprises at least one convex surface, adapted to support against at least one corresponding concave surface of the ceramic part, to prevent rotation between the ceramic part and the metallic adapter.
    [007] The metal adapter may, at its coronal end, have a central protruding portion, adapted to be received in a central apical recess of the ceramic part, in which said central protruding portion can accommodate said at least one flexible arm (with overhang) and add at least one convex surface.
    [008] Said at least one convex surface may consist of three convex surfaces uniformly distributed in the peripheral direction of the metal adapter, wherein said at least one corresponding concave surface consists of three concave surfaces uniformly distributed in the peripheral direction of the ceramic part , and in which the metal adapter comprises three flexible arms and projections arranged between the three convex surfaces.
    [009] The metal adapter may include a load-bearing peripheral surface, adapted to rest against a corresponding peripheral surface of the ceramic part.
    [010] The tapered connection interface of the metal adapter can include an external tapered shape tapering towards the apical end of the metal adapter, and being adapted to correspond with a corresponding tapered surface of the dental implant, and an external recessed portion, provided apically, from the conical shape adjacent to the apical end of the metal adapter.
    [011] The metal adapter may include an external surface indicated to be placed on the soft tissue.
    [012] Said external surface can be arranged between said peripheral load-bearing surface and said external conical shape.
    [013] The ceramic part may comprise a helical channel that passes through the ceramic part and forms a first opening at a first end and a second opening at an apical end, and a helical seat near the apical end of the helical channel to seat the head screw, for fixing the abutment to the dental implant.
    [014] In one or more modalities, the longitudinal axis of the helical channel at the first end does not correspond to the longitudinal axis of the helical channel at the apical end.
    [015] The metal adapter can comprise a hole that passes through the metal adapter and forms a coronal opening and an apical opening, in which the hole is provided with an internal thread.
    [016] The ceramic part can be adapted to support dental restoration.
    [017] The ceramic part can be an integral contour part.
    [018] According to one aspect of the present invention, the abutment is correlated with a dental implant.
    [019] In accordance with yet another aspect of the present invention, a method of fixing a pillar is provided, with an external surface idealized to be placed on the soft tissue in a dental implant, to be fixed on a patient's jaw bone , in which the coronal end of the dental implant is substantially flush with the surface or crest of the jaw bone, the method of which is to fix the abutment to the dental implant, so that said external surface of the metal adapter is exposed to the soft tissue or gingiva that overlaps the jaw bone. This aspect may exhibit the same or similar characteristics and / or technical effects of the aspects discussed above, and vice versa.
    [020] These and other aspects of the present invention will now be described in greater detail with reference to the accompanying drawings, which show currently preferred embodiments of the present invention.
    [021] Figure la is a perspective view of a pillar with a ceramic part and a metallic adapter, according to an embodiment of the invention.
    [022] Figure lb is a cross-sectional view of the column shown in figure la.
    [023] Figure 2a is a perspective view of the metal adapter shown in figures la-lb.
    [024] Figure 2b is a cross-sectional view of the metal adapter shown in figure 2a.
    [025] Figure 3a is a perspective view of the parteramics shown in figures la-lb.
    [026] Figure 3b is a cross-sectional view of the ceramic part shown in figure 3a.
    [027] Figure 4a is a perspective view of the abutment shown in figures la-lb attached to a dental implant.
    [028] Figure 4b is a cross-sectional view of the arrangement shown in figure 4a.
    [029] Figures 5a-5b represent perspective views of a metallic adapter and a ceramic part, in accordance with another embodiment of the present invention.
    [030] Figures 6a-6b represent perspective views of a metallic adapter and a ceramic part, in accordance with yet another embodiment of the present invention.
    [031] Figure 6c is a cross-sectional view of the metal adapter shown in figure 6a, attached to the ceramic part shown in figure 6b.
    [032] Figure 6d is a cross-sectional view of the metal adapter shown in figure 6a and the ceramic part shown in figure 6b, attached to a dental implant.
    [033] Figures la-lb show a pillar (10), according to an embodiment of the present invention.
    [034] The pillar (10) comprises a coronal ceramic part (12). The ceramic part (12) can be adapted to support a dental restoration or dental prosthesis, such as a single unit (crown) restoration or bridge. The restoration or prosthesis can, for example, be cemented to the ceramic part (12). Alternatively, the ceramic part of the present pillar can be an integral contour part. The ceramic part (12) is preferably made entirely of ceramic material, such as zirconia.
    [035] The abutment (10) further comprises an apical metal adapter (14). The metal adapter (14) is also shown in figures 2a-2b. The metal adapter (14) is made, for example, from titanium or titanium alloy. The metal adapter (14) has a conical connection interface, generally designated with the reference (16) (figure 2a). The conical connection interface (16) allows the abutment (10) to be attached to a dental implant (18) (figures 4a-4b), whose dental implant (18) has an internal conical connection interface (20) corresponding to the interface of conical connection (16) of the abutment (10) / metallic adapter (14). The metal adapter (14) can be colored to match the color of the dental implant (18).
    [036] The conical connection interface (16) of the metallic adapter (14) comprises an external conical shape (22) that tapers towards the apical end (24) of the metallic adapter (14). In other words, that portion of the metal adapter (14) has the external shape of a truncated cone. The conical connection interface (16) further comprises a recessed external portion (26). The recessed portion (26) is provided in the apical mode of the conical shape (22), close to the apical end (24) of the metal adapter (14). The recessed portion (26) may, for example, be hexagonal in shape, which may have an externally hexagonal cross section, in a plane perpendicular to the longitudinal axis (28) of the pillar (10).
    [037] The metallic adapter (14) further comprises a central recess (30) provided at the coronal end (32) of the metallic adapter (14). The recess (30) is opened towards the coronal end (32) of the metal adapter (14). The recess (30) comprises at least one, preferably, two opposite flat surfaces (34) which are parallel to the longitudinal axis (28). The recess (30) is surrounded by a peripheral flat load-bearing surface (38).
    [038] The ceramic part (12) further comprises a central projecting portion (40) (figures 3a-3b) provided at the apical end (42) of the ceramic part (12). The projecting portion (40) has a peripheral side wall (44) with at least one, but preferably two opposite flat surfaces (46), which correspond to the flat surface (s) (34) of the adapter metallic (14). The projecting portion (40) is surrounded by a peripheral surface (48), which is preferably flat, in a plane perpendicular to the longitudinal axis (28). The projecting portion (40) is generally adapted to be received in the recess (30) of the metal adapter (14).
    [039] The metal adapter (14) can be removably attached to the ceramic part (12). For this purpose, the metal adapter (14) can comprise at least one flexible arm (52) with a protrusion (50). The said at least one flexible arm (52) can be disposed on an edge (54) of the side wall (56) of the recess (30). Said at least one arm (52) extends in a direction out of the apical end (24) of the metal adapter (14), being generally parallel to the longitudinal axis (28). The protrusion (50) is provided at the coronal free end of the flexible arm (52). Said at least one projection (50) is directed in an internal direction. The expression directed in an internal direction means substantially in the direction of the central longitudinal axis (28) of the pillar (10). Said at least one projection (50) can, for example, project radially into the recess (30). Said at least one projection (50) can have a limited extension in the axial direction. In other words, it has a defined height. Said at least one projection (50) can be devoid of any right angles or recesses, at least on its apical side.
    [040] Said at least one arm (52) is flexible, so that the free end with the protrusion (50) can move or flex radially (perpendicular to the longitudinal axis (28), as indicated by the arrow in figure 2a. The flexibility of said at least one arm (52) can be obtained and controlled by selecting suitable dimensions for the arm (52), according to the material made of the adapter (14). ) can be apically arranged, starting from the coronal end (53) of said at least one flat surface (34), thus the correct rotational relationship between the ceramic part (12) and the metallic adapter (14) can be before the ceramic part (12) reaches the protrusion (s) (50), in the illustrated embodiment, two arms (52) are presented, which are opposite to each other in the peripheral direction.
    [041] Furthermore, the ceramic part (12) comprises at least one recess (58), which corresponds to said at least one protrusion (50) of the metallic adapter (14). In figures 3a-3b, the ceramic part (12) has two recesses opened outwards (58), arranged in the projecting portion (40), at a distance from the apical end (42). As projections (50), the notches (58) may have a limited height. Also, like the projections (50), the notches (58) can be curved or otherwise without any right angles or recesses, at least on their apical sides.
    [042] When the ceramic part (12) and the metallic adapter (14) are arranged correspondingly, that is, when the projecting portion (40) of the ceramic part (12) is received in the recess (30) of the metallic adapter ( 14), the projections (50) compress the side wall (44) of the projecting portion (40), whereby the metal adapter (14) is fixed axially (coronal-apical direction) to the ceramic part (12) by means of a friction. The projections (50) can be received in the recesses (58), so that pressure locking can occur. However, the ceramic part (12) and the metallic adapter (14) can be separated again if sufficient axial force is applied, fractioning them for a spacing. Consequently, the metal adapter (14) can be removably attached to the ceramic part (12). With mainly elastic deformation of the two metal arms (52), the metal adapter (14) can be fixed and removed from the ceramic part (12) several times. The metal adapter (14) can be attached (and removed) to the ceramic part (12) manually, without the use of tools or additional fixing means, such as glue, screws, bolts, etc. In addition, when the metal adapter (14) is attached to the ceramic part (12), the flat surfaces (46) of the ceramic part (12) rest against the flat surfaces (34) of the metal adapter (14), to prevent rotation of the metal adapter (14) in relation to the ceramic part (12). In addition, when the metal adapter (14) is attached to the ceramic part (12), the peripheral surface (48) of the ceramic part (12) rests against the flat top surface (38) of the metal adapter (14). This allows the load support and airtight seal between the ceramic part (12) and the metal adapter (14).
    [043] The ceramic part (12) further comprises a helical channel (60). The helical channel passes through the ceramic part (12) and forms a first opening (62a) at a first end (64a) of the helical channel (60), and a second opening (62b) at a second (apical) end (64b) helical channel (60). In this embodiment, the helical channel (60) is straight, with the first opening (62a) at the coronal end (66) of the ceramic part (12) and the second opening (62b) at the apical end (42) of the ceramic part (12) . In the helical channel (60), a helical seat (68) is provided near the second end (64b). The helical channel (60) preferably includes an inclined surface defining said helical seat (68). The helical seat (68) is adapted to seat the head (70) of a screw (72) (figure 4b) used to fix the abutment (10) to the dental implant (18).
    [044] As opposed to the head (70), the screw (72) has an external thread (74).
    [045] Instead of having a straight helical channel (60), the helical channel of the ceramic part can be angled (not shown). Thus, the longitudinal axis of the helical channel at the first end does not correspond to the longitudinal axis of the helical channel at the second end (64b), so that the first opening becomes located on one side of the ceramic part.
    [046] The metal adapter (14) further comprises a hole (76). The hole (76) passes through the metal adapter (14) and forms a coronal opening (78a) and an apical opening (78b). When the ceramic part (12) and the metal adapter (14) are assembled, the helical channel (60) of the ceramic part (12) and the hole (76) of the metal adapter (14) are aligned. The hole (76) is provided with an internal thread (80). The internal thread (80) can be apically placed in the recess (30). The internal thread (80) can facilitate the recovery of the metal adapter of the dental implant (18). Thus, for example, by inserting the external thread of a recovery tool (not shown) into the internal thread (80) of the metal adapter (14), and then pulling out the implant (18), the metal adapter (14) can be easily removed from the implant (18).
    [047] The dental implant (18) can, for example, be of the type disclosed in patent document WO 2008/128757 A2, the content of which is incorporated herein by reference. However, other dental implants can also be used, such as NobelReplace Conical Connection, provided by Nobel Biocare. Among other things, the dental implant (18) comprises the internal conical connection interface (20). The internal conical connection interface (20) is open to the coronal end (82) of the dental implant (18) and comprises a conical chamber (84), a hexagonal interlock recess (86) and an internally threaded portion (88) ( figure 4b).
    [048] When the abutment (10) is attached to the dental implant (18), the metal adapter (14) of the abutment (10) is partially inserted into the internal conical connection interface (20) of the implant (18). The conical shape (22) of the metal adapter (14) rests against the conical chamber (84), while the recessed portion (26) locks with the hexagonal interlock recess (86) to prevent rotation. The screw (72) is then inserted. The screw (72) extends through the helical channel (60) and the hole (76) and still inside the internally threaded portion (88), where the external thread (74) of the screw (72) engages with said threaded portion (88). When turning the screw (72) with a suitable tool (not shown), the screw head (70) is pressed against the screw seat (68) on the ceramic part (12), so that the pillar (10) can be fixed to the implant (18). Also, the metal adapter (14) is attached between the ceramic part (12) and the dental implant (18). In general, an adapter (10) is provided, featuring a high-strength, non-brittle material, at the implant connection (ie, the metal adapter (14)) in combination with a highly aesthetic ceramic material (the ceramic part (12 )). In addition, the fact that the metal adapter (14) can be detached from the ceramic part (12), makes it possible to fuse porcelain to the ceramic part (12), without having to heat the metal adapter (14).
    [049] When the abutment (10) is attached to the dental implant (18), an external surface (90) of the metallic adapter (14), between the ceramic part (12) and the dental implant (18), remains exposed to the outside, as seen in figures 4a-4b. The outer surface (90) is preferably designed for overlaying the soft tissue. That is, the outer surface (90) is supposed to oppose the patient's gums. The surface (90) can have a height (H) of about 1.5 mm. Also, the surface (90) can be colored to resemble gum tissue (soft tissue).
    [050] Also, when the abutment (10) is attached to the dental implant (18), there is no point of contact between the ceramic part (12) and the dental implant (18), as observed in the case of the metal adapter described in patent document WO 2004/002358. Furthermore, since the ceramic part (12) has the apically protruding portion (40) received in the coronal recess (30) of the metal adapter (14), the screw seat (68) and the screw head (70 ) can be located relatively close to the implant (18), as seen in the modalities shown in figures 5a-5b, and 6a-6b.
    [051] The dental implant to which the abutment (10) is attached can be attached to a patient's jaw bone, or it can be arranged on a physical model. In the latter case, the implantedentary may be a replica or a similar implant.
    [052] An appropriate method of fixing the abutment (10) to the dental implant (18) is described in the applicant's still pending Patent Application, entitled "METHOD OF ATTACHING A DENTAL COMPONENT TO A DENTAL IMPLANT", the content of which is incorporated by this reference.
    [053] Figures 5a-5b show a metallic adapter (114) and a ceramic part (112) according to another embodiment of the present invention. The metallic adapter (114) and the ceramic part (112) shown in figures 5a-5b can be similar to the metallic adapter (14) and ceramic part (12) shown in figures 1-4, but they differ in relation to the interface between themselves. The metal adapter (114) has a central protruding portion (100) at its coronal end (132). The projecting portion (100) is adapted to be received in an apical central recess (102) of the ceramic part (112). The projecting portion (100) is surrounded by a peripheral load-bearing rim (138). The projecting portion (100) comprises two flexible opposing arms (152), each with an outwardly directed projection (150). The protrusion (150) is arranged on the free apical end of the respective arm (152). The ceramic part (112) can optionally comprise at least one recess opened outwards, corresponding to the two projections (150) and arranged in a side wall (144) of the central apical recess (102). When the metal adapter (114) is attached to the ceramic part (112), the two projections (150) are pressed against the side wall (144), to secure the metal adapter (114) to the ceramic part (112). Also, the peripheral rim (138) can rest against a corresponding peripheral flap (148) of the ceramic part (112). Two opposite flat surfaces (134) on the protruding portion (100) of the metal adapter (114) can correspond with the corresponding flat surfaces (146) in the central apical recess (102) of the ceramic part (112), to serve as rotation lock .
    [054] Alternatively, the surfaces in the protruding portion of the metal adapter (114) can be convex (134a-134c), and the corresponding surfaces of the ceramic part (112) can be concave (146a-146c), as seen in the embodiment shown in figures 6a-6d. In figures 6a-6d, three convex surfaces (134a-134c) are evenly distributed in the peripheral direction of the metal adapter (114), and three concave surfaces (146a-146c) evenly distributed in the peripheral direction of the ceramic part (112). Likewise, in the metal adapter (114) there are three flexible arms / protrusions, arranged between the three convex surfaces (134a-134c).
    [055] A person skilled in the art can imagine that the present invention is by no means limited to the preferred embodiments described above. On the contrary, several modifications and variations are possible within the scope of the appended claims.
    [056] Thus, for example, instead of friction fitting and / or pressure locking, the metal adapter can be removably attached to the ceramic part by other means of connection, such as, for example, shape fitting, fitting by force, pressure fitting, reed spring, ring friction, deformation of contact points, bayonet connection, friction ridges, surface roughness, etc.
    权利要求:
    Claims (14)
    [0001]
    1. Abutment, comprising: - a ceramic part (112); and - a metal adapter (114) which can be removably fixed to the ceramic part, where the metal adapter has a conical connection interface (16) for fixing to a dental implant (18), where the metal adapter comprises at least one flexible arm ( 152) with a projection (150) adapted to be pressed against a side wall (144) and / or to fit in a corresponding recess in the side wall of a central apical recess (102) of the ceramic part, to fix the metallic adapter to the ceramic part in the coronal-apical direction, where the metal adapter comprises at its coronal end (132) a central protruding part (100) which is adapted to fit into the central apical recess (102) of the ceramic part (112), and to prevent rotation between the ceramic part and the metal adapter, said metal adapter comprising at least one flat surface (134) in the central projecting part adapted to support against at least one corresponding flat surface (146) of the ceramic part where the central projecting portion houses said at least one flexible arm, where the projection (150) of the at least one flexible arm (152) is provided apically from the coronal edge of at least one flat surface (134) of the part central protrusion (100), thus establishing the rotational relationship between the ceramic part (112) and the metallic adapter (114) before the ceramic part reaches the protrusion (150).
    [0002]
    2. Abutment, comprising: - a ceramic part (112); and - a metal adapter (114) which can be removably fixed to the ceramic part, where the metal adapter has a conical connection interface (16) for fixing to a dental implant (18), where the metal adapter comprises at least one flexible arm ( 152) with a projection (150) adapted to be pressed against a side wall (144) and / or to fit in a corresponding recess in the side wall of a central apical recess (102) of the ceramic part, to fix the metallic adapter to the ceramic part in the coronal-apical direction, where the metal adapter comprises at its coronal end (132) a central protruding part (100) which is adapted to fit into the central apical recess (102) of the ceramic part (112), and to prevent rotation between the ceramic part and the metal adapter, said metal adapter comprising at least one convex surface (134a-c) on the central protruding part adapted to support against at least one corresponding concave surface (146a-c) of the ceramic part, where the central projecting portion houses said at least one flexible arm, where the projection (150) of at least one flexible arm (152) is provided apically from the coronal edge of at least one convex surface (134a-c ) of the central protruding part, thus establishing the rotational relationship between the ceramic part (112) and the metallic adapter (114) before the ceramic part reaches the protrusion (150).
    [0003]
    3. Abutment according to claim 1 or 2, characterized by the fact that the projection (150) of each arm is provided at the free apical end of each respective arm (152).
    [0004]
    4. Pillar according to claim 2 or claim 2 in combination with claim 3, characterized in that said at least one convex surface consists of three convex surfaces (134a-134c) uniformly distributed in the peripheral direction of the metal adapter (114), wherein said at least one corresponding concave surface consists of three concave surfaces (146a-146c) uniformly distributed in the peripheral direction of the ceramic part (112), and in which the metallic adapter (114) comprises three flexible arms and projections arranged between the three convex surfaces (134a-134c).
    [0005]
    Pillar according to any one of the preceding claims, characterized in that the metal adapter includes a peripheral load-bearing surface (138), adapted to rest against a corresponding peripheral surface (148) of the ceramic part.
    [0006]
    6. Abutment according to any one of the preceding claims, characterized by the fact that the conical connection interface of the metallic adapter includes an external conical shape (22) tapering towards the apical end (24) of the metallic adapter and being adapted to correspond with a corresponding tapered surface (84) of the dental implant, and an external oriented portion (26), provided apically, from the tapered shape adjacent to the apical end of the metal adapter.
    [0007]
    7. Abutment, according to any previous claim, characterized by the fact that the metal adapter includes an external surface (90) indicated for placement on the soft tissue.
    [0008]
    8. Pillar according to claim 7, characterized by the fact that said external surface is arranged between said peripheral load-bearing surface (38) and said external conical shape (22).
    [0009]
    9. Pillar according to any previous claim, characterized by the fact that the ceramic part comprises a helical channel (60) that passes through the ceramic part and forms a first opening (62a) at a first end (64a), and a second opening (62b) at an apical end (64b), and a helical seat (68) near the apical end of the helical channel to seat the head of a screw (72), for fixing the abutment to the dental implant.
    [0010]
    10. Pillar according to claim 9, characterized by the fact that the longitudinal axis of the helical channel at the first end does not correspond to the longitudinal axis of the helical channel at the apical end.
    [0011]
    11. Pillar, according to any previous claim, characterized by the fact that the metallic adapter comprises a hole (76) that passes through the metallic adapter and forms a coronal opening (78a) and an apical opening (78b), and in which the hole is provided with an internal thread (80).
    [0012]
    12. Abutment, according to any previous claim, characterized by the fact that the ceramic part is adapted to support a dental restoration.
    [0013]
    13. Pillar according to any one of claims 1-12, characterized in that the ceramic part is an integral contour part.
    [0014]
    14. Abutment, according to any previous claim, characterized by the fact that said abutment is correlated with a dental implant.
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    法律状态:
    2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2020-04-14| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-09-01| B09A| Decision: intention to grant|
    2020-12-08| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 17/12/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    GBGB1223202.1|2012-12-21|
    GB1223202.1A|GB2509135A|2012-12-21|2012-12-21|An abutment with conical metal adapter|
    PCT/EP2013/003807|WO2014095034A1|2012-12-21|2013-12-17|Abutment and method of attaching an abutment to a dental implant|
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