Effect of double-application of three single-step self-etch adhesives on dentin bonding and mechanical properties of resin-dentin area. Oper Dent. 2009 Nov-Dec;34(6):716-24 Authors: Wei S, Shimada Y, Sadr A, Tagami J Abstract PURPOSE: This study investigated whether double-application influences the bond strength of single-step self-etch adhesives and the mechanical properties of the resin-dentin area. MATERIALS AND …