US4687443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submergible post-type dental implant system and method of using same
Assignee: Quantum Bioengineering Ltd
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Filing: 1985-08-09
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Granted: 1987-08-18
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Expires: 2005-08-09
Abstract
Abstract A submergible, post-type dental implant system for anchoring an artificial crown or bridge in a row of teeth or edentulous or partially edentulous area includes a root structure which is surgically implanted transgingivally and into the bone therebeneath, an implant head which is compatibly sized and shaped to fit over an upper tapered portion of the root structure. Prior to the assembly of these two titanium alloy components, a healing cap is disposed over the tapered portion of the root structure during the time interval for healing which may be as much as three to six months. After the healing periods has ended, a tool is used to remove the healing cap and thereafter the implant head is aligned and slid over the top tapered portion of the root structure. The assembly concept employed is that of a locking taper concept where implant head retention on the root structure is dependent on the friction between the head and root of the implant generated by impacting the female taper of the implant head with its male counterpart on the root structure. The lower or inserting portion of the root structure is disposed with a series of substantially parallel fins which serve as cutting fins and generate small bone chips from particles which facilitate a "seeding" action and serve as nucleation sites for early bone formation within the various recesses and contours of this lower anchoring portion of the root structure.
Inventors
- 👤 Thomas D. Driskell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:38
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0089; A61C8/0018; A61C8/0048; A61C8/005; A61C8/008
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
125 words
A submergible, post-type system for use in combination with an artificial dental element for implanting said artificial dental element into the bone structure of a human jaw, said system comprising: an anchoring root member having a first end adapted for securely seating within said bone structure, and a second, opposite receiving end; a temporary healing cap adapted to be received by said receiving end during healing of said bone structure around the first end of said anchoring root member; and an implant head adapted to receive said artificial dental element and being receivable by said receiving end after removal of said temporary healing cap, said implant head having a subgingival base portion the size and shape of which is simulated by said temporary healing cap.
Claim 2
Dependent Claim
125 words
A submergible, post-type system for use in combination with an artificial dental element for implanting said artificial dental element into the bone structure of a human jaw, said system comprising: an anchoring root member having a first end adapted for securely seating within said bone structure, and a second, opposite receiving end; a temporary healing cap adapted to be received by said receiving end during healing of said bone structure around the first end of said anchoring root member; and an implant head adapted to receive said artificial dental element and being receivable by said receiving end after removal of said temporary healing cap, said implant head having a subgingival base portion the size and shape of which is simulated by said temporary healing cap.
Claim 3
Dependent Claim
24 words
The dental implant system of claim 1 wherein said first end includes a plurality of fins of varying sizes arranged into a tapering series.
Claim 4
Dependent Claim
26 words
The dental implant system of claim 2 wherein said first end further includes at least one channel oriented to break continuity of said plurality of fins.
Claim 5
Dependent Claim
25 words
The dental implant system of claim 1 wherein said second, opposite receiving end includes a tapered receiving portion having a substantially circular lateral cross section.
Claim 6
Dependent Claim
46 words
The dental implant system of claim 4 wherein said implant head includes an artificial dental element support post portion adjacent a first end and a tapered received portion adjacent an opposite end, said tapered receiving and received portions being substantially the same in size and shape.
Claim 7
Dependent Claim
32 words
The dental implant system of claim 1 wherein said implant head includes an artificial dental element support post portion adjacent a first end and a tapered received portion adjacent an opposite end.
Claim 8
Dependent Claim
26 words
The dental implant system of claim 6 wherein said artificial dental element support post portion and said tapered received portion are generally concentric to each other.
Claim 9
Dependent Claim
23 words
The dental implant system of claim 6 wherein said artificial dental element support post portion is inclined relative to said tapered received portion.
Claim 10
Dependent Claim
39 words
The dental implant system of claim 6 wherein said healing cap has a generally cylindrical body portion and a tapered receiving portion which is substantially identical in size and shape to the tapered received portion of said implant head.
Claim 11
Dependent Claim
32 words
The dental implant system of claim 6 wherein said implant head further includes a clearance hole which extends through said implant head and is disposed substantially concentric to said tapered received portion.
Claim 12
Dependent Claim
27 words
The dental implant system of claim 1 wherein said healing cap has a generally cylindrical body portion and a tapered received portion disposed within said body portion.
Claim 13
Dependent Claim
127 words
A submergible, post-type system for use in combination with an artificial dental element for implanting said artificial dental element into the bone structure of a human jaw, said system comprising: an interchangeable anchoring root member having a first end adapted for securely seating within said bone structure, and a second, opposite receiving end; a temporary healing cap adapted to be recieved by said receiving end during healing of said bone structure around the first end of said anchoring root member; and an interchangeable implant head adapted to receive said artificial dental element and being receivable by said receiving end after removal of said temporary healing cap, said implant head having a subgingival base portion the size and shape of which is simulated by said temporary healing cap.
Claim 14
Dependent Claim
127 words
A submergible, post-type system for use in combination with an artificial dental element for implanting said artificial dental element into the bone structure of a human jaw, said system comprising: an interchangeable anchoring root member having a first end adapted for securely seating within said bone structure, and a second, opposite receiving end; a temporary healing cap adapted to be recieved by said receiving end during healing of said bone structure around the first end of said anchoring root member; and an interchangeable implant head adapted to receive said artificial dental element and being receivable by said receiving end after removal of said temporary healing cap, said implant head having a subgingival base portion the size and shape of which is simulated by said temporary healing cap.
Claim 15
Dependent Claim
24 words
The dental implant system of claim 12 wherein said first end includes a plurality of fins of varying sizes arranged into a tapering series.
Claim 16
Dependent Claim
37 words
The dental implant system of claim 13 wherein said first end further includes two oppositely disposed vertical channels oriented to segment said plurality of fins into two fin series, one on each side of each vertical channel.
Claim 17
Dependent Claim
24 words
The dental implant system of claim 13 wherein said second, opposite receiving end includes a tapered portion having a substantially circular lateral cross section.
Claim 18
Dependent Claim
27 words
The dental implant system of claim 15 wherein said tapered portion tapers in a direction opposite to the direction of taper of said tapering series of fins.
Claim 19
Dependent Claim
32 words
The dental implant system of claim 12 wherein said implant head includes an artificial dental element support post portion adjacent a first end and a tapered received portion adjacent an opposite end.
Claim 20
Dependent Claim
26 words
The dental implant system of claim 17 wherein said artificial dental element support post portion and said tapered received portion are generally concentric to each other.
Claim 21
Dependent Claim
23 words
The dental implant system of claim 17 wherein said artificial dental element support post portion is inclined relative to said tapered received portion.
References Cited (Backward Citations)
US4187609A
Cited
US4293302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |