US3849887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental implant
Assignee: Vitredent Corp
•
Filing: 1973-03-16
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Granted: 1974-11-26
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Expires: 1993-03-16
Abstract
Abstract A dental implant is formed of substantially nonporous, isotropic carbon having a textured and dentated lower portion provided with at least one expanded groove to assure immobility during alveolar bone ingrowth. The implant is also provided with means for attaching an artificial crown section thereto.
Inventors
- 👤 H Brainin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:05
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0048; A61C8/005; A61C8/0066; A61C8/0012; A61C8/0018; A61C8/0069; A61C8/0063
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
145 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 TISSUES OF THE ORAL CAVITY OF VERTEBRATES, SAID CARBON MATERIAL BEING ISOTROPIC AND MICROCYSTALLINE IN STRUCTURE AND BEING SELECTED FROM THE GROUP CONSISTING OF VITREOUS, GLASSY AND PYROLYTIC CARBONS, ENLARGED GROOVE MEANS FOR ACCOMMODATING RELATIVELY RAPID BONE AND TISSUE INGROWTH FOR RENDERING THE IMPLANT RELATIVELY IMMOBILE DURING THE EARLY STAGES OF THE IMPLANTATION PROCEDURE; AND MEANS FOR FICILITATING THE SECURING TO THE MEMBER OF A CROWN SECTION FORMING WITH SAID MEMBER THE ARTIFICIAL TOOTH.
Claim 2
Dependent Claim
145 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 TISSUES OF THE ORAL CAVITY OF VERTEBRATES, SAID CARBON MATERIAL BEING ISOTROPIC AND MICROCYSTALLINE IN STRUCTURE AND BEING SELECTED FROM THE GROUP CONSISTING OF VITREOUS, GLASSY AND PYROLYTIC CARBONS, ENLARGED GROOVE MEANS FOR ACCOMMODATING RELATIVELY RAPID BONE AND TISSUE INGROWTH FOR RENDERING THE IMPLANT RELATIVELY IMMOBILE DURING THE EARLY STAGES OF THE IMPLANTATION PROCEDURE; AND MEANS FOR FICILITATING THE SECURING TO THE MEMBER OF A CROWN SECTION FORMING WITH SAID MEMBER THE ARTIFICIAL TOOTH.
Claim 3
Dependent Claim
17 words
A dental implant as claimed in claim 1 wherein the entire root section is said carbon material.
Claim 4
Dependent Claim
35 words
A dental implant as claimed in claim 1 wherein only the outer layer of the member is of carbon material, the remainder of the member being of a material other than the said carbon material.
Claim 5
Dependent Claim
34 words
A dental implant as claimed in claim 1 wherein the root section forms part of an artificial tooth which includes a crown section, and means for securing the crown section to the root section.
Claim 6
Dependent Claim
31 words
A dental implant as claimed in claim 1 wherein the surface of the carbon material has a roughened surface, said roughened surface assisting in the attachment of the periodontal ligament thereto.
Claim 7
Dependent Claim
15 words
A dental implant as claimed in claim 1 wherein the carbon material is substantially impermeable.
Claim 8
Dependent Claim
32 words
A dental implant as claimed in claim 1 wherein the immobilizing enlarged groove means includes at least two grooves defined by substantially planar and perpendicular surfaces on opposed sides of the implant.
Claim 9
Dependent Claim
24 words
A dental implant as claimed in claim 7 wherein at least two pair of said grooves are provided on opposed sides of said implant.
Claim 10
Dependent Claim
38 words
A dental implant as claimed in claim 1 wherein 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.
Claim 11
Dependent Claim
17 words
A dental implant as claimed in claim 9 wherein the grooves formed between adjacent ridges are contoured.
Claim 12
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 13
Dependent Claim
23 words
The dental implant as defined in claim 11 wherein a keyed sleeve is positioned within the keyed aperture and affixed to said implant.
Claim 14
Dependent Claim
30 words
The dental implant as defined in claim 12 wherein the pin member is provided with a keyed post which is received by said sleeve and is affixed to said implant.
Claim 15
Dependent Claim
23 words
The dental implant as defined in claim 12 wherein said sleeve is affixed within saiD keyed aperture of said implant by an adhesive.
Claim 16
Dependent Claim
20 words
The dental implant as defined in claim 14 wherein said keyed post is affixed within said sleeve by dental cement.
References Cited (Backward Citations)
US3590485A
Cited
US3579831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |