How to Prevent Failure of Veneered Zirconia Ceramic
Authors Dr. Ghassan Moustapha Dr. Elias Smaira Dr. Mireille Rahi Dr. Habib Abi Aad Abstract In spite of high zirconia mechanical strength, chipping and fracture of layering porcelains applied to zirconia frameworks continue to be a problem. The mechanical integrity and the bonding of the layering porcelain to the framework material are key factors in the successful performance of veneer/framework restorations. Another clinical problem with the use of zirconia is the difficulty in achieving suitable adhesion to resin cement. Traditional adhesive techniques used with silica based ceramics do not work effectively with zirconia. This article reviews the literature to find the favored protocol to prevent delamination between veneering materials and zirconia framework from one part; and to focus on currently available techniques for internal surface roughness and preferred approaches for zirconia cementation. Introduction Since zirconium dioxide wa...