Bonding agent strengths with processed composite resin veneers

Intracoronal veneers of laboratory processed composite resin are currently being employed to produce esthetic restorations that do not involve the bulk or in situ polymerization problems of more traditional veneering systems. The retention of these materials depends on the bonds formed at the veneer/bonding agent interface and the bonding agent/enamel interface. The bond strength of the veneer/bonding agent interface was investigated using resin bonding agents differing in means of polymerization, filler content, and apparent viscosity. The bond strengths were better with materials that were light-cured and less highly filled.