[Repair of fractured veneers on prosthetic restorations]

The repair of an esthetic prosthetic restoration is a problem which has become of interest to the practicing dentist. Many methods have been devised to repair the fractured veneers. This article is referred to one of these methods which uses light-curing resin as a veneering material and silane as a coupling agent. Some of the silane properties and the hydrolisis of silane are mentioned too. Then the mechanism of adhesion to porcelain and to the metal frame are mentioned and in the end the clinical procedure of the repair.