US4801528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental adhesive system
Assignee: Dentsply Research and Development Corp
•
Filing: 1985-10-29
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Granted: 1989-01-31
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Expires: 2005-10-29
Abstract
Abstract Dental cements and adhesives are provided which are polymerizable with visible light. Such adhesives may be applied in thinner films than heretofore possible and demonstrate superior physical properties. Processes employing such materials are disclosed wherein the polymerization of the adhesive is accomplished by transmitting visible light through tooth or other structures to effect the adhesion.
Inventors
- 👤 Richard J. Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:57
CPC Classifications
C; C09; C09J; C09J4/00; A; A61; A61K; A61K6/00; A61K6/70; A61K6/71; A61K6/77; A61K6/78
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
71 words
A method of bonding an article to a tooth with a visible light-activated adhesive comprised of a mixture of: (1) an aromatic or hydroaromatic acrylate or methacrylate having at least two ethylenic double bonds with (2) an aliphatic acrylate or methacrylate, (3) an alpha, beta diketone, and (4) a tertiary amine comprising curing said adhesive by irradiation with visible light, such visible light being applied through a surface of the tooth.
Claim 2
Independent Claim
71 words
A method of bonding an article to a tooth with a visible light-activated adhesive comprised of a mixture of: (1) an aromatic or hydroaromatic acrylate or methacrylate having at least two ethylenic double bonds with (2) an aliphatic acrylate or methacrylate, (3) an alpha, beta diketone, and (4) a tertiary amine comprising curing said adhesive by irradiation with visible light, such visible light being applied through a surface of the tooth.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein the article is a dental prosthesis.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein said visible light has a wavelength between about 400 and about 500 nanometers.
Claim 5
Dependent Claim
47 words
The method of claim 1 wherein the aromatic or hydroaromatic acrylate or methacrylate comprises Bis-GMA reacted with aliphatic diisocyanate, said alpha-diketone is selected from the group consisting of camphoroquinone, benzil, biacetyl, 9,10-phenanthrenequinone, and naphthoquinone, and said amine is selected from the group consisting of N-alkyl-dialkanolamine and trialkanolamine.
Claim 6
Dependent Claim
21 words
The method of claim 1 wherein the aromatic or hydroaromatic acrylate or methacrylate comprises a diglycidyl ether of bisphenol A methacrylate.
Claim 7
Dependent Claim
25 words
The method of claim 5 wherein the aromatic or hydroaromatic acrylate or methacrylate comprises a diglycidyl ether of bisphenol A methacrylate reacted with a diisocyanate.
Claim 8
Dependent Claim
20 words
The method of claim 1 wherein the irradiation is for a time sufficient to cause the desired degree of curing.
Claim 9
Independent Claim
78 words
A method of bonding an article to a tooth with a visible light-activated adhesive comprised of a mixture of: (b 1) an aromatic or hydroaromatic acrylate or methacrylate having at least two ethylenic double bonds with (2) an aliphatic acrylate or methacrylate, (3) an alpha, beta diketone, (4) a tertiary amine, and (5) at least one filler material comprising curing said adhesive by irradiation with visible light, such visible light being applied through a surface of the tooth.
Claim 10
Independent Claim
78 words
A method of bonding an article to a tooth with a visible light-activated adhesive comprised of a mixture of: (b 1) an aromatic or hydroaromatic acrylate or methacrylate having at least two ethylenic double bonds with (2) an aliphatic acrylate or methacrylate, (3) an alpha, beta diketone, (4) a tertiary amine, and (5) at least one filler material comprising curing said adhesive by irradiation with visible light, such visible light being applied through a surface of the tooth.
Claim 11
Dependent Claim
12 words
The method of claim 8 wherein the article is a dental prosthesis.
Claim 12
Dependent Claim
19 words
The method of claim 8 wherein said visible light has a wavelength between about 400 and about 500 nanometers.
Claim 13
Dependent Claim
47 words
The method of claim 8 wherein the aromatic or hydroaromatic acrylate or methacrylate comprises Bis-GMA reacted with aliphatic diisocyanate, said alpha-diketone is selected from the group consisting of camphoroquinone, benzil, biacetyl, 9,10-phenanthrenequinone, and naphthoquinone, and said amine is selected from the group consisting of N-alkyl-dialkanolamine and trialkanolamine.
Claim 14
Dependent Claim
21 words
The method of claim 8 wherein the aromatic or hydroaromatic acrylate or methacrylate comprises a diglycidyl ether of bisphenol A methacrylate.
Claim 15
Dependent Claim
25 words
The method of claim 12 wherein the aromatic or hydroaromatic acrylate or methacrylate comprises a diglycidyl ether of bisphenol A methacrylate reacted with a diisocyanate.
Claim 16
Dependent Claim
20 words
The method of claim 8 wherein the irradiation is for a time sufficient to cause the desired degree of curing.
Claim 17
Dependent Claim
18 words
The method of claim 8 wherein the filler comprises from about 40% to about 70% of the adhesive.
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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) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |