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The effect of 6-month water storage on the bond strength of self-etch adhesives bonded to dentin

Abstract:

Purpose: To evaluate the microtensile bond strengths (μTBS) of 1-step vs. 2-step self-etch systems to dentin after 24 hours and after 6 months of water storage. Methods: Resin composite buildups were bonded to occlusal dentin of third molars using the following adhesives: Xeno IV (XE, Dentsply), G-Bond (GB, GC Inc), Clearfil S3 Bond (CS3, Kuraray); Adper Prompt L-Pop (AD, 3M ESPE); Go (GO, SDI), All Bond SE (ABSE 1-step or ABSE 2-step, Bisco) and Clearfil SE Bond (CSE, Kuraray). The bonded sticks (cross-sectioned area of 0.8-0.9 mm 2) originated from the same teeth were randomly divided to be tested after 24 hours or after 6 months of water storage. The data was submitted to two-way repeated measures ANOVA and Tukey's test with and without the inclusion of premature failures (PF) (α = 0.05). Results: The inclusion of PF resulted in different statistically significant means for CS3, CSE and AD (P< 0.05). Only the ABSE2 showed stable bonds after 6 months of water storage (P> 0.05).