Patent US3797113A successfully refreshed from Google Patents.
US3797113A
Expired / Lapsed
US
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Dental implant
Assignee: Vitredent Corp
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Filing: 1972-02-24
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Granted: 1974-03-19
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Expires: 1992-02-24
Abstract
Abstract A dental implant member formed of substantially non-porous, isotropic carbon having a textured and dentated lower portion. The implant member is provided with means for attaching an a artificial crown section thereto.
Inventors
- 👤 H Brainin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:42
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0048; A61C8/005; A61C13/00; A61C13/225; A61C13/30; A61C8/0018; A61C8/0066; A61C8/0069; A61C8/0063
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A dental implant for insertion into an alveolar cavity in the jaw of a vertebrate to form the root section of an artificial tootH comprising: a member having a shape generally corresponding to said cavity and being capable of being inserted in said cavity and formed, at least in the portion forming the surfaces for engagement with the alveolus, from a carbon material which is chemically, biologically and physically compatible with the hard and soft tissues of the oral cavity of vertebrates, said carbon material being isotropic and microcrystalline in structure and being selected from the group consisting of vitreous, glassy and pyrolytic carbons, said surfaces having a dentated portion comprised of contoured ridges and texturized interstices for enhancing the attachment of hard and soft tissues of the jaw to the root section; and means for facilitating the securing to the member of a crown section forming with said member the artificial tooth.
Claim 2
Dependent Claim
153 words
A dental implant for insertion into an alveolar cavity in the jaw of a vertebrate to form the root section of an artificial tootH comprising: a member having a shape generally corresponding to said cavity and being capable of being inserted in said cavity and formed, at least in the portion forming the surfaces for engagement with the alveolus, from a carbon material which is chemically, biologically and physically compatible with the hard and soft tissues of the oral cavity of vertebrates, said carbon material being isotropic and microcrystalline in structure and being selected from the group consisting of vitreous, glassy and pyrolytic carbons, said surfaces having a dentated portion comprised of contoured ridges and texturized interstices for enhancing the attachment of hard and soft tissues of the jaw to the root section; and means for facilitating the securing to the member of a crown section forming with said member the artificial tooth.
Claim 3
Dependent Claim
17 words
The dental implant as defined in claim 1 wherein the grooves formed between adjacent ridges are contoured.
Claim 4
Dependent Claim
31 words
The dental implant as defined in claim 1 wherein said means includes a keyed aperture, and a crown section formed on a pin member which is received by said keyed aperture.
Claim 5
Dependent Claim
23 words
The dental implant as defined in claim 3 wherein a keyed sleeve is positioned within the keyed aperture and affixed to said implant.
Claim 6
Dependent Claim
30 words
The dental implant as defined in claim 4 wherein the pin member is provided with a keyed post which is received by said sleeve and is affixed to said implant.
Claim 7
Dependent Claim
23 words
The dental implant as defined in claim 4 wherein said sleeve is affixed within said keyed aperture of said implant by an adhesive.
Claim 8
Dependent Claim
20 words
The dental implant as defined in claim 6 wherein said keyed post is affixed within said sleeve by dental cement.
References Cited (Backward Citations)
US2210424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |