Effect of Various Surface Treatments on the Bond Strength of Porcelain Repair

Abstract

This study evaluated the effect of surface treatments on the repair strength of composite resin on a feldspathic ceramic. Ninety ceramic specimens were divided into six groups. In the experimental groups, 4% hydrofluoric acid etching, Er: YAG laser irradiation, CO<inf>2</inf> laser irradiation, airborne-particle abrasion, and silica coating were used as surface treatments. After the application of a porcelain repair kit, composite resin was placed on the treated surfaces. After a shear bond strength test, data were statistically analyzed (α = .05). Surface treatments increased the repair bond strength values (P < .05). Airborneparticle abrasion and silica coating were found to be the most effective. CO<inf>2</inf> laser showed higher repair strength values than Er: YAG laser. © 2013 by Quintessence Publishing Co Inc.