[ in vitro comparison study of flexural bond strength of porcelain ceramic with three types of composites]

ABSTRACT

Statement of Problem: Ceramic materials with excellent biocompatibility are widely used to achieve highly esthetic ceramic restorations. Although these ceramic materials usually provide an excellent restorations but failures do occur, and it is a challenge to the dentist. A number of composite resin systems are marketed for repair of failed porcelain restorations. Repair of failed porcelain restorations typically involves adhesion of a composite resin to the fractured porcelain. The porcelain surface can by physically altered with air abrasion, a diamond bur, or hydrofluoric acid [HF]. Silanization of porcelain and viscosity of bonding agent is an important factor in this respect