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US 5,512,611 AGranted
Cements from .beta.dicarbonyl polymers
AssigneeMinnesota Mining and Manufacturing Company
InventorSumita B. Mitra
Life of this patent
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Abstract
The invention provides novel ionomer polymers and cements comprising .beta.-dicarbonyl groups. The invention has particular utility as filling materials for restoring teeth and for cementing inlays and crowns into place in the tooth, providing a base or a lining in a tooth cavity, and as adhesives or sealants. The invention provides ionomer cement systems that achieve increased resistance to water absorption and solubility.
Claims16
A dental ionomer cement system, comprising:
- a polymer having a weight average molecular weight of at least 1,000 and comprising one or more pendent .beta.-dicarbonyl groups capable of undergoing a setting reaction in the presence of water and a reactive powder, and one or more polymerizable groups capable of crosslinking said polymer;
- and a reactive powder.
A method for adhering to or coating hard tissue, comprising the steps of:
- (a) applying to said hard tissue a cement comprising:
- (i) a polymer having a weight average molecular weight of at least 1,000 and comprising one or more pendent .beta.-dicarbonyl groups capable of undergoing a setting reaction in the presence of water and a reactive powder and one or more polymerizable groups capable of crosslinking said polymer;
- and
- (ii) a reactive powder, and
- (b) hardening said cement.
2 more elements
Dependencies are inferred from the claim text.