EP0047097A2
Expired / Lapsed
EP
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Visible light curable dental compositions
Assignee: Dentsply Sirona Inc
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Filing: 1981-08-18
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Granted: —
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Expires: 2001-08-18
Abstract
Abstract Visible light curable dental restorations are provided having improved colour stability. According to a preferred embodiment, such materials are formulated from a major proportion of inorganic fillers and a minor proportion of a resin component comprising a binder resin, a diluent, and a two-component photosensitizing system comprising an alpha diketone and an amine reducing agent. American Dental Association colour stability standards are met by these compositions.
Inventors
- 👤 Francis F. Koblitz
- 👤 Roy L. Smith
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 20:34
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/891; A61K6/893; A61K6/20; A61K6/30; A61K6/887
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
A dental restorative composition curable by irradiation with visible light comprising a major proportion of an inorganic filler, and a minor proportion of a resin component comprising a binder resin, a diluent monomer, and a photosensitizing system comprising an alpha diketone, and an amine reducing agent, said photosensitizing system being present in an amount sufficient to cause substantial polymerization of said composition upon irradiation with visible light, said composition being capable of passing American Dental Association Specification Number 27 for colour stability.
Claim 2
Dependent Claim
82 words
A dental restorative composition curable by irradiation with visible light comprising a major proportion of an inorganic filler, and a minor proportion of a resin component comprising a binder resin, a diluent monomer, and a photosensitizing system comprising an alpha diketone, and an amine reducing agent, said photosensitizing system being present in an amount sufficient to cause substantial polymerization of said composition upon irradiation with visible light, said composition being capable of passing American Dental Association Specification Number 27 for colour stability.
Claim 3
Dependent Claim
68 words
The composition of Claim 1 wherein said binder resin is selected from the group consisting of acrylated polyesters, acrylated polyesters reacted with isocyanates, and hydroxyalkyl acrylic species reacted with isocyanates, said alpha diketone is selected from the group consisting of camphoroquinone, benzil, biacetyl, 9,10-phenanthrenequinone, and naphthoquinone, said amine is either N-alkyl dialkanolamine or trialkanolamine, and said fillers are selected from the group consisting of inorganic glasses and silica.
Claim 4
Dependent Claim
36 words
The composition of Claims 1 or 2 wherein said alpha diketone is present in an amount of from about 0.5% to about 0.30% based upon the total weight of said binder resin, diluent and photosensitizing system.
Claim 5
Dependent Claim
105 words
A process of restoring teeth comprising applying to a prepared tooth a dental restorative composition curable by irradiation with visible light comprising a major proportion of an inorganic filler, and a minor proportion of a resin component comprising a binder resin, a diluent monomer, and a photosensitizing system comprising an alpha diketone, and an amine reducing agent, said photosensitizing system being present in an amount sufficient to cause substantial polymerization of said composition upon irradiation with visible light, said composition being capable of passing American Dental Association Specification Number 27 for colour stability, and exposing said composition to visible light to effect substantial polymerization thereof.
Claim 6
Dependent Claim
105 words
A process of restoring teeth comprising applying to a prepared tooth a dental restorative composition curable by irradiation with visible light comprising a major proportion of an inorganic filler, and a minor proportion of a resin component comprising a binder resin, a diluent monomer, and a photosensitizing system comprising an alpha diketone, and an amine reducing agent, said photosensitizing system being present in an amount sufficient to cause substantial polymerization of said composition upon irradiation with visible light, said composition being capable of passing American Dental Association Specification Number 27 for colour stability, and exposing said composition to visible light to effect substantial polymerization thereof.
Claim 7
Dependent Claim
69 words
The process of Claim 4 wherein said binder resin is selected from the group consisting of acrylated polyesters, acrylated polyesters reacted with isocyanates, and hydroxyalkyl acrylic species reacted with isocyanates, said alpha diketone is selected from the group consisting of camphorquinone, benzil, biacetyl, 9,10-phenanthrene quinone, and naphthoquinone, said amine is either N-alkyl dialkanolamine or trialkanolamine, and said fillers are selected from the group consisting of inorganic glasses and silica.
Claim 8
Dependent Claim
36 words
The process of Claims 4 ot 5 wherein said alpha diketone is present in an amount of from about 0.05% to about 0.30% based upon the total weight of said binder resin, diluent, and photosensitizing system.
Claim 9
Dependent Claim
23 words
The process of Claims 4 or 5 wherein said light is composed predominately of wavelengths between about 4000 angstroms and about 5000 angstroms.
References Cited (Backward Citations)
No citation records indexed.
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