However , for the ultra-mild All-Bond Universal adhesive , the etch- and -rinse strategy was significantly different than the self-etch mode in terms of dentin micro-tensile bond strength , as well as in the global analysis of enamel micro-tensile and micro-shear bond strength ( p≤0.05 ) .
The enamel bond strength of universal adhesives is improved with prior phosphoric acid etching .
However , this effect was not evident for dentin with the use of mild universal adhesives with the etch- and -rinse strategy .
CLINICAL SIGNIFICANCE Selective enamel etching prior to the application of a mild universal adhesive is an advisable strategy for optimizing bonding
OBJECTIVES A systematic review was conducted to determine whether the etch- and -rinse or self-etching mode is the best protocol for dentin and enamel adhesion by universal adhesives .
The clinical performance of one- and two-step self-etching adhesive systems at one year.
BACKGROUND The author compared the clinical performance of a two-step self-etching adhesive system and a one-step self-etching adhesive system over one year . METHODS Thirty-five patients with noncarious cervical lesions were enrolled in the study . The author restored 163 lesions using a two-step ( Clearfil Protect Bond , Kuraray , Osaka , Japan ) or a one-step ( Xeno III , Dentsply/DeTrey , Konstanz , Germany ) self-etching adhesive system . Enamel margins were not beveled , and no mechanical retentions were placed . The author evaluted the restorations at baseline and at three , six , nine and 12 months after placement using modified Ryge criteria for color-matching ability , marginal discoloration , marginal adaptation , initial caries formation , anatomical form , postoperative sensitivity and retention loss . RESULTS The author assessed the changes in the parameters using the Cochran Q test and the McNemar test at a significance level of .05 . At one year , the retention rates for the restorations in the two-step group were 100 percent ; they were 96 percent for the restorations in the one-step group . Of the retained 75 restorations from the one-step group , two had marginal discoloration and slight anatomical form problems . In both groups , color-matching ability and postoperative sensitivity remained excellent . CONCLUSION The performance of both self-etching adhesive systems was excellent during this one-year clinical trial . However , the two-step system exhibited slightly better retention than the one-step system . CLINICAL IMPLICATION S The one- and two-step self-etching adhesive systems evaluated in this study provided excellent clinical retention in noncarious lesions without mechanical retention
However , for the ultra-mild All-Bond Universal adhesive , the etch- and -rinse strategy was significantly different than the self-etch mode in terms of dentin micro-tensile bond strength , as well as in the global analysis of enamel micro-tensile and micro-shear bond strength ( p≤0.05 ) .
The enamel bond strength of universal adhesives is improved with prior phosphoric acid etching .
However , this effect was not evident for dentin with the use of mild universal adhesives with the etch- and -rinse strategy .
CLINICAL SIGNIFICANCE Selective enamel etching prior to the application of a mild universal adhesive is an advisable strategy for optimizing bonding
OBJECTIVES A systematic review was conducted to determine whether the etch- and -rinse or self-etching mode is the best protocol for dentin and enamel adhesion by universal adhesives .