US4720319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for applying retention means onto casting patterns of dental prosthetic metal constructions
Assignee: SIH Stiftung and Co Industrie Holding KG
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Filing: 1986-04-17
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Granted: 1988-01-19
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Expires: 2006-04-17
Abstract
Abstract Completely removable retention means are applied onto casting patterns for dental prosthetic metal constructions by coating the casting pattern with an adhesive coating composition to hold said retention means in position, said composition containing at least one photopolymerizable compound the polymerization of which is inhibited by oxygen, and at least one photopolymerization initiator, irradiating the coated casting pattern, applying the retention means, and irradiating the casting pattern once more.
Inventors
- 👤 Oswald Gasser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:17
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0003; Y; Y10; Y10S; Y10S522/00; Y10S522/908; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
71 words
A method for applying removable retention means onto casting patterns of dental prosthetic metal constructions comprising: (a) coating a wax casting pattern with a fluid adhesive composition comprising at least one photopolymerizable compound the polymerization of which is inhibited by oxygen, and at least one photopolymerization initiator; (b) irradiating said casting pattern; (c) applying removable retention means onto the irradiated surface of said casting pattern; and (d) irradiating said casting pattern.
Claim 2
Independent Claim
71 words
A method for applying removable retention means onto casting patterns of dental prosthetic metal constructions comprising: (a) coating a wax casting pattern with a fluid adhesive composition comprising at least one photopolymerizable compound the polymerization of which is inhibited by oxygen, and at least one photopolymerization initiator; (b) irradiating said casting pattern; (c) applying removable retention means onto the irradiated surface of said casting pattern; and (d) irradiating said casting pattern.
Claim 3
Dependent Claim
21 words
The method according to claim 1, wherein said photopolymerizable compound is an ethylenically unsaturated compound capable of undergoing free radical photopolymerization.
Claim 4
Dependent Claim
28 words
The method according to claim 2, wherein said photopolymerizable compound is an unsaturated polyester in mixture with styrene or vinyl toluene, a vinyl ether, or an allyl ester.
Claim 5
Dependent Claim
17 words
The method according to claim 2, wherein said photopolymerizable compound is an acrylic or methacrylic acid derivative.
Claim 6
Dependent Claim
18 words
The method according to claim 2, wherein said photopolymerizable compound is an ester of acrylic or methacrylic acid.
Claim 7
Dependent Claim
18 words
The method according to claim 1, wherein said fluid adhesive composition further contains at least one photopolymerization activator.
Claim 8
Dependent Claim
19 words
The method according to claim 6, wherein said fluid adhesive composition further contains fillers and coloring and adjuvant substances.
Claim 9
Independent Claim
108 words
A method for applying removable retention means onto casting patterns of dental prosthetic metal constructions comprising: (a) coating a wax casting patterns with a fluid adhesive composition comprising at least one photopolymerizable compound the polymerization of which is inhibited by oxygen, and at least one photopolymerization initiator; (b) irradiating said casting pattern to cure said photopolymerizable composition while forming a tacky surface layer due to inhibition by oxygen; (c) applying removable retention means onto the irradiated surface of said casting pattern; and (d) irradiating said casting pattern to cure the photopolymerizable composition at the contact faces of the retention bodies inaccessible to oxygen for fastening said retention means.
Claim 10
Independent Claim
108 words
A method for applying removable retention means onto casting patterns of dental prosthetic metal constructions comprising: (a) coating a wax casting patterns with a fluid adhesive composition comprising at least one photopolymerizable compound the polymerization of which is inhibited by oxygen, and at least one photopolymerization initiator; (b) irradiating said casting pattern to cure said photopolymerizable composition while forming a tacky surface layer due to inhibition by oxygen; (c) applying removable retention means onto the irradiated surface of said casting pattern; and (d) irradiating said casting pattern to cure the photopolymerizable composition at the contact faces of the retention bodies inaccessible to oxygen for fastening said retention means.
Claim 11
Dependent Claim
21 words
The method according to claim 8, wherein said photopolymerizable compound is an ethylenically unsaturated compound capable of undergoing free radical photopolymerization.
Claim 12
Dependent Claim
28 words
The method according to claim 9, wherein said photopolymerizable compound is an unsaturated polyester in mixture with styrene or vinyl toluene, a vinyl ether, or an allyl ester.
Claim 13
Dependent Claim
17 words
The method according to claim 9, wherein said photopolymerizable compound is an acrylic or methacrylic acid derivative.
Claim 14
Dependent Claim
18 words
The method according to claim 9, wherein said photopolymerizable compound is an ester of acrylic or methacrylic acid.
Claim 15
Dependent Claim
18 words
The method according to claim 8, wherein said fluid adhesive composition further contains at least one photopolymerization activator.
Claim 16
Dependent Claim
19 words
The method according to claim 13, wherein said fluid adhesive composition further contains fillers and coloring and adjuvant substances.
References Cited (Backward Citations)
US3367027A
Cited
US3658620A
Cited
US3666591A
Cited
US4022674A
Cited
US4555389A
Cited
DE3429119A1
Cited
US4642244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |