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US4466796A
Expired / Lapsed
US
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Dental implant for use as a pillar in a mouth
Assignee: JSB DENTAL SUPPLY SA
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Filing: 1981-10-19
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Granted: 1984-08-21
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Expires: 2001-10-19
Abstract
Abstract The dental implant comprises a head, preferably having a polygonal section like a hexagonal one; a generally central portion provided with a specially shaped thread; and a rear portion which is tapered and provided with a slot over the diameter of the ending surface. The implant is made from bioceramics and adapted to be screwed in a hole previously drilled into the patient's maxillary bone.
Inventors
- 👤 Sami Sandhaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:09
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
105 words
A bioceramic dental implant for insertion in a prepared opening in the jaw bone for use as a pillar in a patient's mouth, having a head and a central portion provided with a plurality of successive circular recesses, wherein said central portion is generally cylindrically shaped and wherein each of the spires of said recesses on said cylindrical central portion are formed by a supporting cylindrical surface, a truncated conical surface and a concave circular arcuated surface, these three surfaces following one another in the above indicated sequence downwardly on the implant, the concave arcuate surface being following by the surface of the next spire.
Claim 2
Dependent Claim
105 words
A bioceramic dental implant for insertion in a prepared opening in the jaw bone for use as a pillar in a patient's mouth, having a head and a central portion provided with a plurality of successive circular recesses, wherein said central portion is generally cylindrically shaped and wherein each of the spires of said recesses on said cylindrical central portion are formed by a supporting cylindrical surface, a truncated conical surface and a concave circular arcuated surface, these three surfaces following one another in the above indicated sequence downwardly on the implant, the concave arcuate surface being following by the surface of the next spire.
Claim 3
Dependent Claim
21 words
The implant of claim 1, further comprising a tapered end portion following said central portion and forming an introductory point portion.
Claim 4
Dependent Claim
25 words
The implant of claim 1, wherein the end portion is provided with a transversal slot extending substantially over the entire diameter of said end portion.
Claim 5
Dependent Claim
35 words
The implant of claim 1 having a total length between 15 mm and 20 mm, a diameter between 4 and 5 mm., and between 2.5 and 7 complete thread spires on said cylindrical central portion.
Claim 6
Dependent Claim
18 words
The implant of claim 4 wherein the pitch of the thread is between 1.5 mm and 2 mm.
Claim 7
Dependent Claim
19 words
The implant of claim 1, further comprising a metallic core embedded along the longitudinal axis of the dental implant.
References Cited (Backward Citations)
US3579830A
Cited
US3672058A
Cited
FR2308348A1
Cited
US4079515A
Cited
US4060896A
Cited
US4229169A
Cited
GB2063680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |