ADHESION OF RESIN TO CASTING ALLOYS

The bond strength of a composite resin bonded to various dental castin g alloys with three adhesive systems - Silicoater, Panavia, and Superb ond C&B - was investigated. The metal surfaces were treated solely wit h aluminum oxide blasting before application of the adhesive. Thermal cycling caused a reduction in bond strength for all combinations of th e adhesive systems and alloys, but the Silicoater system recorded the greatest bond strength. The 4-META system was equivalent to Panavia sy stem in bond strengths to most metals and exhibited greater strength w ith others.