Source: https://patents.google.com/patent/US20020192620A1/en
Timestamp: 2018-07-18 19:11:27
Document Index: 314246981

Matched Legal Cases: ['art 1', 'arts 1', 'arts 1', 'arts 1', 'art 1', 'art 1', 'art 1', 'art.\n4', 'art.\n17']

US20020192620A1 - Method and arrangement for an implant superstructure - Google Patents
US20020192620A1
US20020192620A1 US10169313 US16931302A US2002192620A1 US 20020192620 A1 US20020192620 A1 US 20020192620A1 US 10169313 US10169313 US 10169313 US 16931302 A US16931302 A US 16931302A US 2002192620 A1 US2002192620 A1 US 2002192620A1
US6902401B2 (en )
[0009]FIG. 1 shows, from the rear and in partial cross section, a superstructure and three implants or fixtures set in relation to it, with spacer members, securing screws for anchoring the superstructure in the implant, and areas of dentine, for example in the lower jaw of a human,
[0010]FIG. 2 shows, in a perspective view obliquely from above right/from the rear, the superstructure with the implants/fixtures and the securing screws according to FIG. 1,
[0011]FIG. 3 shows, in a horizontal view from above, the superstructure in one structural illustrative embodiment,
[0012]FIG. 4 shows the superstructure according to FIG. 3 from the inside and in a side view,
[0013]FIG. 5 shows the superstructure according to FIGS. 3 and 4 from below,
[0014]FIG. 6 shows the superstructure according to FIG. 4 from the side,
[0015]FIG. 7 shows said superstructure in cross section along A-A in FIG. 6,
[0016]FIG. 8 shows the superstructure from the side and slightly turned in relation to FIG. 6,
[0017]FIG. 9 shows the superstructure in a perspective view, obliquely from above left,
[0018]FIG. 10, in cross section along B-B in FIG. 5, shows the design of the bearing part and the crown-supporting part at one of the recesses for the securing members, and
[0019]FIG. 11 shows the cross section of the unit along C-C in FIG. 5.
[0021]FIG. 2 is intended to show the design or curve of the superstructure in a horizontal plane, which design or curve is arc-shaped and has an arc shape or curve following the curvature of the symbolically indicated dentine 5. The figure shows the application of the implants 2, 3 and 4 and the securing screws 7, 8 and 9 in said arc shape.
[0025]FIG. 6 shows the positions of the holes 1 f on the part 1 a, a distance d′ between the lower surface 1 g and the center line 1 k of the hole having been chosen at about 1.5 mm.
[0026]FIG. 7 shows the mutual relationships of the holes and their relationship to the central recess 1 d. The angle between the recess 1 d and each through-hole is indicated by means of the angles α″ which can be chosen at about 35°. The distance between the inner transverse holes and the recess 1 d is indicated by the angles α′″ and in the present case has been chosen at about 15°. The parts 1 a and 1 b are also indicated in this case.
[0027]FIG. 8 shows the terminal transition between the parts 1 a and 1 b at the ends 1 b′ and 1 b″. Said transitions are characterized by a first phase 11, 11′ which merges into a curved transition part or 12, 12′ and is thereafter finished by a further upswing phase 13, 13′.
[0028]FIG. 9 shows said phases (although not marked in the figure) at said ends 1 b′ and 1 b″.
[0029]FIGS. 10 and 11 show in detail the cross sections of parts 1 a and 1 b. The part 1 a has a width of about 2.8 mm in the depth direction which is indicated by A. The width or depth of the part 1 b is indicated by A′ and is chosen at about 5.5 mm. The part 1 b at the hole or recess 1 d of the securing member is indicated by 1 h′ and assumes a value of about 3 mm. The corresponding height h″ at the position alongside the hole 1 d, i.e. the position according to FIG. 11, assumes values of about 3.2 mm. FIG. 11 also shows the outside transitions 1 l, 1 l′. Said transitions are arc-shaped or curved. FIG. 8 too shows the transition 1 l.
1. A method for producing a superstructure (1) which is included in a tooth prosthesis system together with, inter alia, positioning members (14), drill guide sets (15), fixture guide sets (16) and fixtures (2, 3, 4) or fixture members, for example fixtures together with spacer members, and securing members (7, 8, 9) for anchoring the superstructure in the fixtures or fixture members, by means of which tooth prosthesis system, for example, a tooth prosthesis is designed to be applied (to a patient) in a short application time, for example in one or only a few days, the superstructure (1) being designed with a bearing part (1 b) which can cooperate with the fixtures or fixture members, and a tooth-prosthesis-supporting part (1 a), and the parts being designed with recesses (1 d) through which the securing members (7, 8, 9) extend upon said anchoring, characterized in that the bearing part (1 b) and the tooth-prosthesis-supporting part (1 a) are integrated over at least most of their horizontal extents, at the time of or in connection with the manufacture of the parts, by means of the parts being produced from a common blank or a common material composition using a treatment or method which gives user-friendly outer shapes or bevels (1 h, 1 i) on the parts.
2. The method as claimed in patent claim 1, characterized in that, at the time of manufacture, the tooth-prosthesis-supporting part (1 a) is given a shape which, in the horizontal cross section of the superstructure (1), is narrower than the shape of the bearing part (1 b), and in that the parts are formed with one or more outside transitions (1 l, 1 l′) which each form a curved or arc-shaped transition between the parts (1 a, 1 b).
3. The method as claimed in patent claim 1 or 2, characterized in that, at its surface which can cooperate with the fixtures or fixture members, the bearing part (1 b) is given depressions (1 c) with plane bottom surfaces which are opposite the end surfaces (2 b) of the fixtures or fixture members, and in that the plane bottom surfaces of the depressions are given surface areas which exceed the surface areas of the fixtures or fixture members at the parts of the fixtures or fixture members cooperating with said bearing part.
4. The method as claimed in any of the preceding patent claims, characterized in that, at the time of its manufacture, the tooth-prosthesis-supporting part (1 a) is provided with a number of holes (1 f) extending in the transverse direction.
5. The method as claimed in any of the preceding patent claims, characterized in that the parts are made of titanium or another equivalent tissue-compatible material or tissue-compatible alloy.
6. The method as claimed in any of the preceding patent claims, characterized in that the parts (1 a, 1 b) are designed with a common low height (H), for example with a height of between 0.5 and 1.0 mm, preferably between 0.7 and 0.8 mm.
7. The method as claimed in any of the preceding patent claims, characterized in that the unit or superstructure forming the parts is produced by machining with subsequent grinding and/or barrel-polishing of sharp edges and production of outer bevels which give user-friendliness.
8. The method as claimed in any of patent claims 1-6, characterized in that the unit or superstructure forming the parts is produced by casting sinterable material and carrying out a sintering procedure or solidifying procedure, and by subsequent working of the outer shape to give user-friendliness.
9. The method as claimed in any of the preceding patent claims, characterized in that, at its front end, the unit forming the superstructure is provided or covered with material forming the tooth prosthesis, for example acrylate or another synthetic material used in tooth prostheses.
10. The method as claimed in any of the preceding patent claims, characterized in that the recesses for the securing members have diameters which are only slightly less than the width (A) of the prosthesis-supporting part (1 a).
11. The method as claimed in any of the preceding patent claims, characterized in that, at the time of its production, the superstructure is given an arc shape and in that, at the ends of the arc shape, there are parts (1 a, 1 b) with a first bevel (11, 11 b) which is arranged on the bearing part and which via a curved part (12, 12′) merges with the lower surface of the tooth-prosthesis-supporting part, which in turn is curved up toward the outer edge of the tooth-prosthesis-supporting part via a second bevel (13, 13′).
12. A superstructure arrangement which is intended to be included in a tooth prosthesis system together with, inter alia, positioning members (14), drill guide sets (15), fixture guide sets (16) and fixtures (2, 3, 4) or fixture members, for example consisting of fixtures and spacer members, and securing members for anchoring the superstructure in the fixtures or fixture members, which tooth prosthesis system makes it possible in a short application time, for example in one or only a few days, to apply a complete tooth prosthesis to dentine, primarily of the lower jaw, said superstructure comprising a bearing part (1 b) which can cooperate with the fixtures or fixture members, and a tooth-prosthesis-supporting part (1 a), and the parts being designed with continuous recesses (1 d) for said securing members (7, 8, 9), characterized in that the bearing part and the tooth-prosthesis-supporting part form a common unit, and in that the superstructure works without being included in the covering function for the exposed end surfaces of implanted fixtures or fixture members and can be removed from the fixtures or fixture members during application of said tooth prosthesis to the unit.
13. The arrangement as claimed in patent claim 12, characterized in that the bearing part (1 b) of the common unit cooperates with fixtures or fixture parts with cutting edges at their front parts which provide a direction-ensuring function during screwing into the dentine (5), irrespective of the homogeneity of the latter.
14. The arrangement as claimed in patent claim 12 or 13, characterized in that the bearing part (1 b) of the unit is provided with depressions (1 c) with plane bottom surfaces via which the bearing part lies against the top surfaces of the fixtures, the fixture members or their spacers.
15. The arrangement as claimed in patent claim 12, 13 or 14, characterized in that the tooth-prosthesis-supporting part is provided with a shape which in the horizontal cross section of the superstructure is narrower than the configuration of the bearing part, and in that the parts are formed with one or more outside transitions (1 l, 1 l′) which form a curved or arc-shaped transition between the parts (1 a, 1 b).
16. The arrangement as claimed in any of patent claims 12-15, characterized in that, at its surface cooperating with the fixtures or fixture members, the bearing part is given depressions (1 c) with plane bottom surfaces which are opposite the free end surfaces (2 c) of the fixtures or fixture members, and in that the plane bottom surfaces of the depressions have surface areas which exceed the surface areas of the fixtures or fixture members at the parts of the fixtures or fixture members cooperating with the bearing part.
17. The arrangement as claimed in any of patent claims 12-16, characterized in that the tooth-prosthesis-supporting part (1 a) is provided with a number of holes (1 f) extending in the transverse direction.
18. The arrangement as claimed in any of patent claims 12-17, characterized in that the parts are made of titanium or another tissue-compatible material or tissue-compatible alloy.
19. The arrangement as claimed in any of patent claims 12-18, characterized in that the superstructure is designed with a common low height (H) of between 0.5 and 1.0 mm, preferably between 0.7 and 0.8 mm.
20. The arrangement as claimed in any of patent claims 12-19, characterized in that, at its front parts, the unit forming the superstructure is arranged such that it can be covered by material forming the tooth prosthesis, in the form of acrylic or another synthetic material used in tooth prostheses.
21. The arrangement as claimed in any of patent claims 12-20, characterized in that the recesses (1 d) for the securing members (7, 8, 9) have diameters which are only slightly less than the width (A) of the tooth-prosthesis-supporting part (1 a).
22. The arrangement as claimed in any of patent claims 12-21, characterized in that the superstructure (1) has an arc shape and in that, at the ends (1 a′, 1 a″) of the arc shape, the bearing part (1 b) is designed with a first bevel (11, 11′) which merges via a curved part (12, 12′) into the lower surface of the tooth-prosthesis-supporting part, which lower surface in turn is curved up toward the outer edge of the tooth-prosthesis-supporting part via a second bevel (13, 13′).
US20020192620A1 true true US20020192620A1 (en) 2002-12-19
US6902401B2 US6902401B2 (en) 2005-06-07
WO2011107627A1 (en) * 2010-03-05 2011-09-09 Internacional Dental 2007 , Sl Prosthesis for dental implants