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Chulalongkorn University Dental Journal

Publication Date

2013-01-01

Abstract

Objective To compare the durability of microtensile bond strength of reparing ceramics after different surface treatments with resin composite. Materials and methods Eight IPS Empress CAD ceramic blocks were cut into square shape and divided into 4 groups according to the surface treatments: hydrofluoric acid, hydrofluoric acid + silanization, sandblast and sandblast + silanization. Specimens were applied with bonding system and resin composite. Half of each group were subjected to thermocycling and cyclic loading. All groups were sliced into 10 specimens, 1 mm thickness and microtensile bond strength was recorded using universal testing machine. Data were analyzed with three-way ANOVA and Tukey test (p < 0.05). Results Microtensile bond strength of all aging groups was significantly lower than non-aging groups either using any type of surface treatment and silanization or not. When compared in aging groups, group that was prepared with sandblast + silanization had lowest microtensile bond strength and group that was prepared with sandblast only had highest microtensile bond strength. Conclusion Microtensile bond strength of ceramic repaired with resin composite was decreased after aging process, but surface treatment with silane and type of surface treatment (hydrofluoric acid or sandblasting with aluminum oxide) did not affect it.

DOI

10.58837/CHULA.CUDJ.36.1.5

First Page

37

Last Page

48

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