Patent ID: 8507570

Claim:
A light-curable dental material comprising (i) a polymerizable compound having at least one ethylenically unsaturated bond; (ii) a photopolymerization initiator for polymerizing said polymerizable compound, and (iii) a 1,3-dipolar compound selected from a group consisting of: (a) a nitrone of the following formula (VIII): wherein R 6 , R 7 and R 8 are independently hydrogen; or a substituted or unsubstituted aryl group, arylalkyl group, alkyl group, alkenyl group, alkynyl group, cycloalkyl group or cycloalkylalkyl group; or R 7 and R 8 form a 5-membered, 6-membered or 7-membered nitrogen-containing ring together with atoms to which they are attached to, (b) an azide of the following formula (IV): wherein R 1 of formula (IV) is a substituted or unsubstituted aryl group, arylalkyl group, alkyl group, alkenyl group, alkynyl group, cycloalkyl group or cycloalkylalkyl group, (c) a diazo compound of the following formula (V): wherein R 1 and R 2 of formula (V) are independently hydrogen; or a substituted or unsubstituted aryl group, arylalkyl group, alkyl group, alkenyl group, alkynyl group, cycloalkyl group, cycloalkylalkyl group or benzoyl group, or (d) a nitrilylide of the following formula (VI): wherein R 1 , R 2 , and R 3 of formula (VI) are independently hydrogen; or a substituted or unsubstituted aryl group, arylalkyl group, alkyl group, alkenyl group, alkynyl group, cycloalkyl group or cycloalkylalkyl group, preferably one of R 1 , R 2 , and R 3 is not hydrogen.