Conclusions Multi-mode ' universal ' adhesives can achieve substantial bonding to dentin , regardless of the used modes ( either etch- and -rinse or self-etch )
Objectives The aims of this study were to conduct a systematic review of the microtensile bond strength ( µTBS ) of  multi-mode adhesives to dentin and to perform a meta- analysis to assess the significance of differences in the µTBS of one of the most commonly used universal adhesives ( Scotchbond Universal , 3 M ESPE ) depending on whether the etch- and -rinse or self-etch mode was used .
Three different adhesive systems; three different bond strength test methods
Abstract Objective . The aim of this study was to evaluate the efficacy of the microtensile , microshear and shear bond strength test methods to assess the bond strength of two self-etch adhesives and one etch&rinse adhesive on dentin . Material s and methods : Seventy-five extracted human molars were ground to expose their flat dentin surfaces and r and omly assigned to one of three groups according to the type of test method ( 15 for microtensile , 15 for microshear , 45 for shear ) . Each of these groups was then assigned to three sub-groups according to the bonding systems ( Clearfil SE Bond , Kuraray ; G Bond , GC ; Prime&Bond NT , Dentsply ) used . Then , 15 specimens were prepared for each sub-group according to the test method employed ( n = 15 ) . After being stored in distilled water at 37 ° C for 24 h , the specimens were placed in a universal testing machine for three test methods and stressed at a crosshead speed of 0.5 mm/min . Mean bond strengths were analyzed using Kruskall-Wallis and Mann-Whitney U-tests at a significance level of p < 0.05 . Results . The microtensile test had the highest bond strength ( p = 0.046 ) . Clearfil SE Bond and Prime&Bond NT produced significantly higher values than the G Bond in the microtensile bond test ( p < 0.05 ) , whereas no significant differences were found among the adhesives in the microshear bond test ( p > 0.05 ) . For the shear test , Clearfil SE Bond showed higher bond strength than Prime&Bond NT and G Bond ( p < 0.05 ) . Conclusion : Bond strength to dentin depends on the material and the test method used
Conclusions Multi-mode ' universal ' adhesives can achieve substantial bonding to dentin , regardless of the used modes ( either etch- and -rinse or self-etch )
Objectives The aims of this study were to conduct a systematic review of the microtensile bond strength ( µTBS ) of  multi-mode adhesives to dentin and to perform a meta- analysis to assess the significance of differences in the µTBS of one of the most commonly used universal adhesives ( Scotchbond Universal , 3 M ESPE ) depending on whether the etch- and -rinse or self-etch mode was used .