Patent US3997637A successfully refreshed from Google Patents.
US3997637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making tooth reconstructions such as inlays and crowns
Assignee: Individual
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Filing: 1975-04-23
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Granted: 1976-12-14
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Expires: 1995-04-23
Abstract
Abstract Method of making artificial tooth inlays and crowns by electrolytically depositing a metal, preferably gold, matrix on a preformed model and subsequently building up porcelain on the matrix. The matrix may then be removed prior to cementing the inlay or crown to the patient's tooth; or alternatively the inlay or crown may be cemented to the patient's tooth together with the matrix.
Inventors
- 👤 Olbert William Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:07
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/70; A61C5/77; A61K; A61K6/00; A61K6/80; A61K6/84; A61K6/844; A61C13/00; A61C13/0003; A61C13/0006
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
149 words
A method of making a porcelain and metal tooth reconstruction, the metal being positioned with respect to the porcelain so as to be adapted to serve as a surface of contact with adhesive when the reconstruction is adhesively attached to a tooth, the method comprising: forming a model of the reconstruction, applying a conductive coating on said model, electrolytically depositing a layer of a first metal selected from the group consisting of gold, platinum, palladium, rhodium and alloys thereof on said conductive coating, removing said model from said layer of said first metal and forming a porcelain reconstruction having a desired shape against a surface of said metal, and then electrolytically depositing on said layer of said first metal on a side opposite said porcelain, a second metal different from said first and selected from the group consisting of iron, tin, zinc, nickel, chromium, cobalt, vanadium, platinum and palladium.
Claim 2
Independent Claim
149 words
A method of making a porcelain and metal tooth reconstruction, the metal being positioned with respect to the porcelain so as to be adapted to serve as a surface of contact with adhesive when the reconstruction is adhesively attached to a tooth, the method comprising: forming a model of the reconstruction, applying a conductive coating on said model, electrolytically depositing a layer of a first metal selected from the group consisting of gold, platinum, palladium, rhodium and alloys thereof on said conductive coating, removing said model from said layer of said first metal and forming a porcelain reconstruction having a desired shape against a surface of said metal, and then electrolytically depositing on said layer of said first metal on a side opposite said porcelain, a second metal different from said first and selected from the group consisting of iron, tin, zinc, nickel, chromium, cobalt, vanadium, platinum and palladium.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein said reconstruction is adapted to be used as an inlay and said metal forms a jacket about a portion of said porcelain.
Claim 4
Dependent Claim
30 words
The method of claim 1 wherein said reconstruction is adapted to be used as a crown and said metal is disposed so as to form a socket for said crown.
Claim 5
Dependent Claim
34 words
A method according to claim 1, wherein a vent is formed in the metal in order to assist the relief of pneumatic pressure when the reconstruction is secured in position in the patient's mouth.
Claim 6
Dependent Claim
35 words
A method according to claim 1, wherein the model is produced from a plaster material which is then protected, for example by coating with an epoxy resin, prior to the electrolytic deposition of metal thereon.
References Cited (Backward Citations)
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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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |