Patent US4457714A successfully refreshed from Google Patents.
US4457714A
Expired / Lapsed
US
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Dental bridge and method of dental bridge fabrication
Assignee: Individual
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Filing: 1982-03-18
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Granted: 1984-07-03
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Expires: 2002-03-18
Abstract
Abstract An integrally formed prefabricated dental bridge which allows complete fitting and attachment during one visit to a dentist. The bridge includes a vertically-oriented pontic element, and a pair of horizontally-extending bars disposed in line with each other on opposite sides of the pontic element. The biting surfaces of the two teeth adjacent the missing tooth have grooves formed in them for seating respective ones of the two horizontally-extending bars. The pontic element is then shaped by grinding to have the appearance of a natural looking tooth, and the two bars are covered by filling material applied to the grooves of the adjacent teeth.
Inventors
- 👤 Warren Z. Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:57
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/275; A61C13/0003
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
62 words
A starting product for the production of an integrally formed prefabricated dental bridge comprising an oversized vertically-oriented central pontic element, and a pair of horizontally-extending bars disposed on opposite sides of said central pontic element, said central pontic element being made of material which can be ground away and having a configuration larger than that of the natural tooth to be replaced.
Claim 2
Dependent Claim
62 words
A starting product for the production of an integrally formed prefabricated dental bridge comprising an oversized vertically-oriented central pontic element, and a pair of horizontally-extending bars disposed on opposite sides of said central pontic element, said central pontic element being made of material which can be ground away and having a configuration larger than that of the natural tooth to be replaced.
Claim 3
Dependent Claim
41 words
An integrally formed prefabricated dental bridge in accordance with claim 1 wherein at least one of the horizontal dimensions of said central pontic element is larger than that of a natural tooth which is to be replaced by the dental bridge.
Claim 4
Dependent Claim
37 words
An integrally formed prefabricated dental bridge in accordance with claim 2 wherein the vertical dimension of said central pontic element is larger than that of a natural tooth which is to be replaced by the dental bridge.
Claim 5
Dependent Claim
30 words
An integrally formed prefabricated dental bridge in accordance with claim 3 wherein said pair of horizontaly-extending bars are comprised of a single bar which passes through said central pontic element.
Claim 6
Dependent Claim
24 words
An integrally formed prefabricated dental bridge in accordance with claim 4 wherein said single bar has a non-linear shape within said central pontic element.
Claim 7
Dependent Claim
20 words
An integrally formed prefabricated dental bridge in accordance with claim 5 wherein said horizontally-extending bars include adjustable locating means thereon.
Claim 8
Dependent Claim
30 words
An integrally ormed prefabricated dental bridge in accordance with claim 1 wherein said pair of horizontally-extending bars are comprised of a single bar which passes through said central pontic element.
Claim 9
Dependent Claim
24 words
An integrally formed prefabricated dental bridge in accordance with claim 7 wherein said single bar has a non-linear shape within said central pontic element.
Claim 10
Dependent Claim
20 words
An integrally formed prefabricated dental bridge in accordance with claim 8 wherein said horizontally-extending bars include adjustable locating means thereon.
Claim 11
Dependent Claim
20 words
An integrally formed prefabricated dental bridge in accordance with claim 1 wherein said horizontally-extending bars include adjustable locating means thereon.
Claim 12
Dependent Claim
29 words
An integrally formed prefabricated dental bridge in accordance with claim 1 wherein said pontic element is made of acrylic material with a biting region made of quartz-filled composite material.
Claim 13
Independent Claim
137 words
A method of making a said starting product being dental bridge from an integrally formed prefabricated device; said device having an oversized vertically-oriented central pontic element and a pair of bars disposed on opposite sides of said central pontic element, said central pontic element being made of material which can be ground away and having a configuration larger than that of the natural tooth to be replaced; comprising the steps of: (a) forming a groove on the biting surface of each of the two teeth which are adjacent to a missing tooth, (b) seating the pair of horizontally-extending bars of said device in respective ones of said grooves, (c) shaping said central pontic element to have the appearance of a natural looking tooth, and (d) filling said grooves and covering the horizontally-extending bars therein with filling material.
Claim 14
Independent Claim
137 words
A method of making a said starting product being dental bridge from an integrally formed prefabricated device; said device having an oversized vertically-oriented central pontic element and a pair of bars disposed on opposite sides of said central pontic element, said central pontic element being made of material which can be ground away and having a configuration larger than that of the natural tooth to be replaced; comprising the steps of: (a) forming a groove on the biting surface of each of the two teeth which are adjacent to a missing tooth, (b) seating the pair of horizontally-extending bars of said device in respective ones of said grooves, (c) shaping said central pontic element to have the appearance of a natural looking tooth, and (d) filling said grooves and covering the horizontally-extending bars therein with filling material.
Claim 15
Dependent Claim
49 words
A method in accordance with claim 12 wherein the horizontal and vertical dimensions of said central pontic element are larger than the corresponding dimensions of a natural tooth which is to be replaced, and in step (c) said central pontic element is shaped by grinding away the material thereof.
Claim 16
Dependent Claim
36 words
A method in accordance with claim 13 wherein said horizontally-extending bars include adjustable locating means thereon, and in step (b) said locating means are adjusted such that said horizontally-extending bars seat tightly in the respective grooves.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |