Effect of surface treatment and storage on the bond strength of\ndifferent ceramic systems

Abstract

Aim: The aim of this study was to evaluate the micro shear bond\nstrength of different ceramic systems - IPS Empress 2, Cergogold,\nIn-Ceram Alumina and Cercon - and a dual luting agent.\tMethods: \nTwelve specimens of each ceramic were fabricated and divided according\ndifferent surface treatments: Group 1: No additional treatment was\napplied to the ceramic surface; Group 2: Ceramics were etched with 9.5%\nhydrofluoric acid; Group 3: specimens treated with airborne particle\nabrasion for each ceramic system in accordance with\nmanufacturer’s instructions (n=20). The tests were performed\nafter 24 h or after water storage for 6 months. Data were then assessed\nstatistically using the 3-way ANOVA and the Tukey’s test\n(P<0.05). Results:\tFor Cergogold and IPS Empress 2 systems, the\ntreatments performed with airborne particle abrasion and hydrofluoric\nacid showed no significant differences from each other, and both were\nsuperior to the groups without treatment. For Cercon and In-Ceram\nceramics, no differences were found among the groups (P<0.05). When\nthe surface was treated with hydrofluoric acid, the highest bond\nstrength was found to IPS Empress 2 in the 6-month storage period\n(P<0.05). Conclusion: Lower bond strength values were only\nobserved with IPS Empress 2 ceramic for the control group in the\n6-month storage (P<0.05).