US5458488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental implant and post construction
Assignee: Wellesley Research Associates Inc
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Filing: 1994-02-10
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Granted: 1995-10-17
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Expires: 2014-02-10
Abstract
Abstract A dental post-dental implant system is provided wherein the post is provided with a circumferential collar that mates with an upper portion of a circumferential wall of the implant. The circumferential collar resists expansion of the implant after being positioned in a patient.
Inventors
- 👤 Paul R. Chalifoux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:28
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0048; A61C8/005; A61C8/0065; A61C8/0069; A61C8/0057; A61C8/0059
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
A dental system for insertion into a bore of a jaw bone of a patient which comprises: a dental implant adapted to fit in a bore of a jaw bone, said dental implant having a central hole extending from a top surface of said implant through a portion of the vertical height of said implant, said implant having a circumferential wall surrounding said central hole and having said top surface and a circumferential outside surface, a dental post having a stem section shaped to fit into said central hole and a circumferential collar, said collar having an internal diameter slightly smaller than the diameter of the circumferential outside surface, and means for positioning said collar over said top surface and over a portion of said outside surface to form a junction, said junction having an angle relative to a vertical axis of said implant of between 0 and 25 degrees.
Claim 2
Dependent Claim
150 words
A dental system for insertion into a bore of a jaw bone of a patient which comprises: a dental implant adapted to fit in a bore of a jaw bone, said dental implant having a central hole extending from a top surface of said implant through a portion of the vertical height of said implant, said implant having a circumferential wall surrounding said central hole and having said top surface and a circumferential outside surface, a dental post having a stem section shaped to fit into said central hole and a circumferential collar, said collar having an internal diameter slightly smaller than the diameter of the circumferential outside surface, and means for positioning said collar over said top surface and over a portion of said outside surface to form a junction, said junction having an angle relative to a vertical axis of said implant of between 0 and 25 degrees.
Claim 3
Dependent Claim
36 words
The dental system of claim 1 wherein said means for positioning comprises a screw extending through a second central hole in said post and through at least a portion of said central hole of said implant.
Claim 4
Dependent Claim
12 words
The dental system of claim 2 wherein said outside wall is beveled.
Claim 5
Dependent Claim
17 words
The dental system of claim 1 wherein said junction has said angle between 0 and 10 degrees.
Claim 6
Dependent Claim
17 words
The dental system of claim 1 wherein said junction has said angle between 0 and 5 degrees.
Claim 7
Dependent Claim
27 words
The dental system of claim 1 wherein said outside surface includes a circumferential indentation and said collar includes a circumferential projection positioned to fit into said indentation.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-10-16 | 1999-04-17 | 1999-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-10-16 | 2003-04-17 | 2003-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-10-16 | 2007-04-17 | 2007-10-17 | $7700.00 | Window Closed / Lapsed |