Patent US4500291A successfully refreshed from Google Patents.
US4500291A
Expired / Lapsed
US
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Method of fabricating dentures
Assignee: Individual
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Filing: 1983-07-25
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Granted: 1985-02-19
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Expires: 2003-07-25
Abstract
Abstract Impressions of the patient's upper and lower arches are prepared and a plaster of Paris model of each of the arches is cast. A wax plate is formed on each model around the palate and gingival areas surrounding the teeth. A tooth and the surrounding wax plate is removed exposing the plaster. A base, formed of fast cure acrylic material, is then formed on the exposed plaster. A replacement tooth is then placed in the base material.
Inventors
- 👤 Sammy G. Davis
- 👤 Donna C. Gulling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:58
CPC Classifications
A; A61; A61C; A61C13/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A method for fabricating denture plates, comprising the steps of: preparing an impression of the patient's arch; casting a plaster model of the patient's arch; forming a wax plate to the contour of the palate and gingiva of the model; removing one of the teeth of the model to thereby expose the base of the model; preparing the denture plate by building up a base of acrylic material on the exposed base for the removed tooth and positioning a replacement tooth in the acrylic material to thereby replace the removed tooth; and building up the gingival area around the replacement tooth.
Claim 2
Independent Claim
101 words
A method for fabricating denture plates, comprising the steps of: preparing an impression of the patient's arch; casting a plaster model of the patient's arch; forming a wax plate to the contour of the palate and gingiva of the model; removing one of the teeth of the model to thereby expose the base of the model; preparing the denture plate by building up a base of acrylic material on the exposed base for the removed tooth and positioning a replacement tooth in the acrylic material to thereby replace the removed tooth; and building up the gingival area around the replacement tooth.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein the acrylic is a fast cure acrylic.
Claim 4
Dependent Claim
20 words
The method of claim 1 wherein the acrylic used to build up the gingiva area is a fast cure acrylic.
Claim 5
Dependent Claim
16 words
The method of claim 1 wherein the thickness of said wax plate is about 2 millimeters.
Claim 6
Dependent Claim
32 words
The method of claim 1 wherein the portion of the wax plate adjacent the gingival area on said model is removed prior to building up of the gingival area with said acrylic.
Claim 7
Dependent Claim
24 words
The method of claim 1 wherein the thickness of said acrylic of said finished denture plate is from about 2 to about 4 millimeters.
References Cited (Backward Citations)
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US2896265A
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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) | 1988-02-19 | 1988-08-20 | 1989-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-19 | 1992-08-20 | 1993-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-19 | 1996-08-20 | 1997-02-19 | $7700.00 | Window Closed / Lapsed |