US4269595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated non-precious pontic
Assignee: Individual
•
Filing: 1979-05-25
•
Granted: 1981-05-26
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Expires: 1999-05-25
Abstract
Abstract Disclosed is a prefabricated pontic framework formed of a non-precious material and method to be used in making dental bridges. The prefabricated pontic framework comprises a plurality of pontic supports with a connecting bar mounted on opposed sides of each pontic support, such pontic framework being selected and cut to size for a particular bridgework situation.
Inventors
- 👤 Mike Z. Nemethy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:08
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/20; A61C13/225; A61C13/275
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
A prefabricated pontic framework for dental bridges, comprising: a plurality of pontic supports, each said pontic support defining an enlarged mold for being completely surrounded by a coating of porcelain to form an artificial tooth; each said pontic support having a pair of connecting bars extending therefrom; each of said pontic supports being rigidly connected to at least one of the other of said pontic supports by one of its said pair of connecting bars and spaced from each other on the framework to accomodate the porcelain coating thereon so that said connecting bars are arranged and constructed to be cut to give said prefabricated pontic framework the desired length and number of said pontic supports for a given said bridge, said pontic support and said connecting bars being formed of a structurally rigid, non-precious material.
Claim 2
Dependent Claim
136 words
A prefabricated pontic framework for dental bridges, comprising: a plurality of pontic supports, each said pontic support defining an enlarged mold for being completely surrounded by a coating of porcelain to form an artificial tooth; each said pontic support having a pair of connecting bars extending therefrom; each of said pontic supports being rigidly connected to at least one of the other of said pontic supports by one of its said pair of connecting bars and spaced from each other on the framework to accomodate the porcelain coating thereon so that said connecting bars are arranged and constructed to be cut to give said prefabricated pontic framework the desired length and number of said pontic supports for a given said bridge, said pontic support and said connecting bars being formed of a structurally rigid, non-precious material.
Claim 3
Dependent Claim
21 words
In the pontic arrangement of claim 1, two of said connecting bars being adapted for mechanical bonding to precious alloy copings.
Claim 4
Dependent Claim
13 words
In the pontic framework of claim 2, said non-precious material comprising a plastic.
Claim 5
Dependent Claim
14 words
In the pontic framework of claim 2, said non-precious material comprising a non-precious alloy.
Claim 6
Dependent Claim
27 words
In the pontic framework of claim 1, said plurality of pontic supports comprising three said pontic supports of predetermined sizes and alignment with respect to each other.
Claim 7
Dependent Claim
41 words
In the pontic framework of claim 1, a pair of precious metal copings each being connected by a casted mechanical bond to each of a pair of connecting bars positioned on the opposed extremities of a precut said prefabricated pontic framework.
Claim 8
Dependent Claim
38 words
In the pontic framework of claim 6, said coating of said porcelain being disposed in surrounding relationship to each of said pontic supports so that each pontic support is coated by said porcelain to form said artificial tooth.
References Cited (Backward Citations)
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US1382830A
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US1483781A
Cited
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Cited
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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) | 1984-05-25 | 1984-11-24 | 1985-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-25 | 1988-11-24 | 1989-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-25 | 1992-11-24 | 1993-05-26 | $7700.00 | Window Closed / Lapsed |