Bond Strength of Self-etch Adhesive Combined with 4^th-generation Adhesive

Objectives: The study determined the shear bond strength to human tooth structure of resin composite (Filtek Z250, 3M ESPE) bonded with Adper Prompt L-Pop (AP), Scotchbond Multipurpose (SMP), and AP + SMP resin where the self-etching AP replaced the phosphoric acid normally used with the SMP. Methods: Bonded specimens (n=8) of unground enamel (UNE), ground enamel (GE), and superficial dentin (SD) were tested 24 hours after storage in water at 37C using the Ultradent shear bond test at 1.0 mm/min. Means and standard deviations were analyzed by ANOVA and Fisher's PLSD test at 0.05 level of significance. Results: Means with standard deviations in parentheses are listed. Means with the same superscripted letters are not different statistically (p=0.05).