Dentin bonding system
AssigneeBisco, Inc.
InventorsByoung Suh, Martin Hamer
Life of this patent
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Abstract
Novel unsaturated carboxy esters for use in dentistry as bonding agents are produced by a reaction of unsaturated alcohols with cyclic acid dianhydrides. The dianhydrides which can be used in the invention are in general symmetrical compounds having an aromatic nucleus substituted with four carboxylic acid groups from which two moles of water have been removed to form two cyclic anhydride groupings. The unsaturated alcohols used for making the unsaturated carboxy esters have the formula ##STR1## wherein R is H or CH.sub.3, R.sub.1 is H, CH.sub.3, or .dbd.CH.sub.2, n is an integer from 1 to 4 inclusive, and x is 0 or 1.
Claims5
A primer for improving the bond strength between a dental composite and dentin or a metal, sail primer comprising:
- (1) the reaction product of N-tolylglycine or N-phenylglycine with glycidyl methacrylate, and
- (2) a bonding agent comprising the reaction product of an ethylenically unsaturated alcohol having 3 to 12 carbon atoms with a cyclic anhydride having the formula ##STR10##
Dependencies are inferred from the claim text.