Effect of solvent removal on adhesive properties of simplified etch-and-rinse systems and on bond strengths to dry and wet dentin.

Purpose: This study evaluated the resin-dentin microtensile bond strength (microTBS) of ethanol/water- (Single Bond, [SB] 3M ESPE), ethanol- (Optibond Solo Plus, [OP] Kerr) and acetone-based (One-Step, [OS] Bisco) two-step etch-and-rinse adhesives in the presence or absence of their respective solvents to dry and wet dentin. The ultimate tensile strength (UTS) and the degree of conversion (DC) of the materials were also evaluated.

Materials And Methods: Solvent-based and solvent-free adhesives were vigorously applied to occlusal dentin surfaces after phosphoric acid etching.