Can area delimitation and tube type impact microshear bond strength of adhesives to dental substrates?

Background he need of delimiting the bonding area on microshear bond strength (µSBS) test remains an unclear issue. In addition, there are different types tube to perform resin composite cylinders µSBS test. The aim this study was evaluate influence adhesive delimitation and type used build up specimens for testing systems, enamel dentin. Methods 120 bovine incisors were ground achieve flat buccal (n=60) dentin surfaces. Specimens each substrate randomly allocated into 6 groups (n=10) according system-a two-step self-etch (Clearfil SE Bond) a universal (Scotchbond Universal Adhesive) applied in etch-and-rinse modes– specimens: starch polyethylene. 4 (Filtek Z250) made surface; 2 them performed. subjected after 24 h water storage at 37°C. Data submitted three-way ANOVA Tukey’s post hoc tests (α=0.05). Results did not (p=0.349) nor (p=0.158). differently affected ranking adhesives both substrates. Conclusions does dentin, irrespective specimens. type’s impact depends dental system.