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, wherein the 1,3-dipolar compound is (a) a sydnone of the following formula: wherein R 4 and R 5 are independently hydrogen or a substituted or unsubstituted aryl group, arylalkyl group, alkyl group, alkenyl group, alkynyl group, cycloalkyl group or cycloalkylalkyl group; or (b) 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; or (c) a munchnone of the following formula: wherein R 1, R 2, and R 3 are independently hydrogen; or a substituted or unsubstituted aryl group, arylalkyl group, alkyl group, alkenyl group, alkynyl group, cycloalkyl group or cycloalkylalkyl group; or (d) a diazo compound of the following formula: wherein R 1 and R 2 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 (e) a nitrilylide of the following formula: wherein R 1, R 2, and R 3 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. (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, wherein the 1,3-dipolar compound is (a) a sydnone of the following formula: wherein R 4 and R 5 are independently hydrogen or a substituted or unsubstituted aryl group, arylalkyl group, alkyl group, alkenyl group, alkynyl group, cycloalkyl group or cycloalkylalkyl group; or (b) 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; or (c) a munchnone of the following formula: wherein R 1, R 2, and R 3 are independently hydrogen; or a substituted or unsubstituted aryl group, arylalkyl group, alkyl group, alkenyl group, alkynyl group, cycloalkyl group or cycloalkylalkyl group; or (d) a diazo compound of the following formula: wherein R 1 and R 2 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 (e) a nitrilylide of the following formula: wherein R 1, R 2, and R 3 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. (a) a sydnone of the following formula: wherein R 4 and R 5 are independently hydrogen or a substituted or unsubstituted aryl group, arylalkyl group, alkyl group, alkenyl group, alkynyl group, cycloalkyl group or cycloalkylalkyl group; or (b) 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; or (c) a munchnone of the following formula: wherein R 1, R 2, and R 3 are independently hydrogen; or a substituted or unsubstituted aryl group, arylalkyl group, alkyl group, alkenyl group, alkynyl group, cycloalkyl group or cycloalkylalkyl group; or (d) a diazo compound of the following formula: wherein R 1 and R 2 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 (e) a nitrilylide of the following formula: wherein R 1, R 2, and R 3 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.