Does application of phase-separated self-etching adhesives affect bond strength?
PURPOSE: To investigate whether application of three all-in-one self-etching adhesives in a phase-separated stage has an adverse effect on bonding to enamel and dentin. MATERIALS AND METHODS: The shear bond strengths (SBSs) on ground enamel and dentin of the adhesives G-Bond, Hybrid Bond, and iBond, combined with Venus composite, were determined. The adhesives were dispensed in a dish and applied either 1) immediately, 2) after 2 min, or 3) after 5 min dark storage under ambient conditions. The adhesives were shortly stirred with a microbrush and applied. Prior to light activation, the adhesives were air dried for 10 s with a strong air blast. Composite cylinders were produced in a cylindrical mold clamped on the treated surface. SBSs (n = 8) were determined in a universal testing machine at 1 mm/min crosshead speed after 24 h storage in 37 degrees C water. Data were statistically analyzed with Kruskal-Wallis ANOVA and the Mann-Whitney U-Test (p < 0.05). The qualitative compositions of
