Patent US4645453A successfully refreshed from Google Patents.
US4645453A
Expired / Lapsed
US
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Bendable adapter for dental implant
Assignee: Individual
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Filing: 1985-09-19
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Granted: 1987-02-24
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Expires: 2005-09-19
Abstract
Abstract An implant system includes an anchor the accessible end of which is located substantially at the level of the gum tissue at the alveolar crest. A bendable adapter made of titanium or titanium alloy has one end inserted into the accessible anchor socket for rigid connection thereto, and a second distal end projecting into the dental crown region to support a superstructure. The projecting part of the adapter may take various forms. It may provide a simple coping upon which a single tooth replacement may be built, or it may provide a socket for connection to companion structures. The intermediate portion of the adapter is necked down to provide a bendable region close to the level of the gum tissue whereby the anchor can be positioned for maximum retention, and the projecting end can be positioned to avoid tissue interference, to achieve parallelism for detachable connectors, to achieve maximum occlusal and esthetic functions. The adapter is made of (1) titanium, (2) a titanium alloy such as that consisting of 90% titanium, 6% aluminum and 4% vanadium, or (3) stainless steel.
Inventors
- 👤 Gerald A. Niznick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:52
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0048; A61C8/0018; A61C8/0037; A61C8/0039; A61C8/005; A61C8/0053; A61C8/0066; A61C8/0069; A61C8/006
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
143 words
In a dental implant system: (a) an anchor adapted to be secured to the bone tissue at the alveolar ridge of a subject with an orientation determined by case study; (b) an adapter having two ends, one end being connected to the anchor and the other end projecting from the anchor; said adapter having a straight neck portion located adjacent the top of said anchor, and providing a transverse axis for bending of the projecting end to change the angularity of said projecting end from that of said connected end so that the attitude of said anchor can be selected to maximize retention without compromising desired positioning of a superstructure or a prosthesis adapted to be joined to said projecting end to achieve optimum esthetics and/or function and without distorting, weakening or breaking said neck portion or any other portion of said adapter.
Claim 2
Dependent Claim
143 words
In a dental implant system: (a) an anchor adapted to be secured to the bone tissue at the alveolar ridge of a subject with an orientation determined by case study; (b) an adapter having two ends, one end being connected to the anchor and the other end projecting from the anchor; said adapter having a straight neck portion located adjacent the top of said anchor, and providing a transverse axis for bending of the projecting end to change the angularity of said projecting end from that of said connected end so that the attitude of said anchor can be selected to maximize retention without compromising desired positioning of a superstructure or a prosthesis adapted to be joined to said projecting end to achieve optimum esthetics and/or function and without distorting, weakening or breaking said neck portion or any other portion of said adapter.
Claim 3
Dependent Claim
28 words
The implant system as set forth in claim 1 in which said adapter is made of commercially pure titanium with a neck diameter between 0.060 and 0.090 inches.
Claim 4
Dependent Claim
37 words
The implant system as set forth in claim 1 in which said adapter is made of a titanium alloy of about 90% titanium, 6% aluminum and 4% vanadium with a neck diameter between 0.050 and 0.080 inches.
Claim 5
Dependent Claim
28 words
The implant system as set forth in claim 1 in which said projecting end of said adapter provides a coping upon which a tooth restoration may be built.
Claim 6
Dependent Claim
26 words
The implant system as set forth in claim 1 in which said projecting end of said adapter provides a socket for detachable connection of companion structures.
Claim 7
Dependent Claim
63 words
The implant system as set forth in claim 1 in which said anchor is sized so that its upper end is located substantially at the level of the top of the alveolar ridge whereby the axis of bending of the adapter is at the level of the gum tissue thus minimizing the turning torque upon said adapter as a result of occlusal forces.
Claim 8
Dependent Claim
19 words
The implant system as set forth in claim 1 in which said adapter is made of commercially pure titanium.
Claim 9
Dependent Claim
28 words
The implant system as set forth in claim 1 in which said adapter is made of a titanium alloy or about 90% titanium, 6% aluminum and 4% vanadium.
Claim 10
Dependent Claim
14 words
The implant system of claim 1 wherein said neck portion is cylindrical-shaped or frustoconical-shaped.
Claim 11
Dependent Claim
191 words
In a dental implant system: (a) an anchor adapted to be secured to the bone tissue at the alveolar ridge of a subject with an orientation determined by case study; (b) an adapter having two ends, one end being connected to the anchor and the other end projecting from the anchor; said adapter having a neck portion which is located adjacent the top of said anchor, said neck portion having a size and shape adapted to permit bending the projecting end substantially at the level of the top of the alveolar ridge without distorting, breaking or weakening said neck portion, whereby the axis of bending of the projecting end is at the level of the gum tissue thus minimizing the turning torque upon said adapter as a result of occlusal forces, said neck portion providing a transverse axis for bending of the projecting end to change the angularity of said projecting end from that of said connected end so that the attitude of said anchor can be selected to maximize retention without compromising desired position of a prosthesis to be joined to said projecting end to achieve optimum aesthetics and/or function.
Claim 12
Dependent Claim
191 words
In a dental implant system: (a) an anchor adapted to be secured to the bone tissue at the alveolar ridge of a subject with an orientation determined by case study; (b) an adapter having two ends, one end being connected to the anchor and the other end projecting from the anchor; said adapter having a neck portion which is located adjacent the top of said anchor, said neck portion having a size and shape adapted to permit bending the projecting end substantially at the level of the top of the alveolar ridge without distorting, breaking or weakening said neck portion, whereby the axis of bending of the projecting end is at the level of the gum tissue thus minimizing the turning torque upon said adapter as a result of occlusal forces, said neck portion providing a transverse axis for bending of the projecting end to change the angularity of said projecting end from that of said connected end so that the attitude of said anchor can be selected to maximize retention without compromising desired position of a prosthesis to be joined to said projecting end to achieve optimum aesthetics and/or function.
Claim 13
Dependent Claim
28 words
The implant system as set forth in claim 10 in which said adapter is made of commercially pure titanium with a neck diameter between 0.060 and 0.090 inches.
Claim 14
Dependent Claim
37 words
The implant system as set forth in claim 10 in which said adapter is made of a titanium alloy of about 90% titanium, 6% aluminum and 4% vanadium with a neck diameter between 0.050 and 0.080 inches.
Claim 15
Dependent Claim
28 words
The implant system as set forth in claim 10 in which said projecting end of said adapter provides a coping upon which a tooth restoration may be built.
Claim 16
Dependent Claim
26 words
The implant system as set forth in claim 10 in which said projecting end of said adapter provides a socket for detachable connection of companion structures.
Claim 17
Dependent Claim
19 words
The implant system as set forth in claim 10 in which said adapter is made of commercially pure titanium.
Claim 18
Dependent Claim
28 words
The implant system as set forth in claim 10 in which said adapter is made of a titanium alloy or about 90% titanium, 6% aluminum and 4% vanadium.
Claim 19
Dependent Claim
131 words
In a dental implant system: (a) an anchor adapted to be secured to the bone tissue at the alveolar ridge of a subject with an orientation determined by case study; (b) an adapter having two ends, one end being connected to the anchor and the other end projecting from the anchor; said adapter having a neck portion which is located adjacent the top of said anchor, said neck portion having a size and shape adapted to permit bending the projecting end substantially at the level of the top of the alveolar ridge without distorting, breaking or weakening said neck portion, whereby the axis of bending of the projecting end is at the level of the gum tissue thus minimizing the turning torque upon said adapter as a result of occlusal forces.
Claim 20
Dependent Claim
131 words
In a dental implant system: (a) an anchor adapted to be secured to the bone tissue at the alveolar ridge of a subject with an orientation determined by case study; (b) an adapter having two ends, one end being connected to the anchor and the other end projecting from the anchor; said adapter having a neck portion which is located adjacent the top of said anchor, said neck portion having a size and shape adapted to permit bending the projecting end substantially at the level of the top of the alveolar ridge without distorting, breaking or weakening said neck portion, whereby the axis of bending of the projecting end is at the level of the gum tissue thus minimizing the turning torque upon said adapter as a result of occlusal forces.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |