No overall effect was revealed in the meta-analyses , meaning that no influence of the  ER or SE strategy on POS .
SIGNIFICANCE The type of adhesive strategy ( ER or SE ) for posterior resin composite restorations does not influence the risk and intensity of POS .
OBJECTIVES A systematic review and meta- analysis were performed on the risk and intensity of postoperative sensitivity ( POS ) in posterior resin composite restorations bonded with self-etch ( SE ) and etch- and -rinse ( ER ) adhesives .
Clinical performance of a self-etching and a total-etch adhesive system - 2-year results.
The purpose of this controlled prospect i ve clinical study was to compare the clinical performance of the self-etching adhesive system AdheSE and the established total-etch adhesive system Excite in classes I and II cavities for a period of 2 years . Fifty patients participated in this study . Each received two restorations , one with AdheSE , one with Excite by one calibrated , non-blinded operator . The resin composite used to restore the teeth was Tetric Ceram HB . One calibrated , blinded clinician re-evaluated the restorations at baseline , after 6 , 12 and 24 months after placement using the modified Ryge criteria . For this , vitality , post-operative sensitivity , visible marginal irregularity , marginal discolouration , secondary caries , surface texture , anatomic form and filling defect were considered . After 2 years , 67 restorations were review ed in 34 patients . None of the teeth showed signs of secondary caries . Two teeth , one of each group , had to receive endodontic treatment because of pulp inflammation . All other teeth remained vital . Slight marginal discolourations were observed in six AdheSE restorations and three Excite restorations . These restorations were scored as Beta . After 2 years , an overall clinical success rate , summing up all the Alpha and Beta scores , of 97 % was found , viewing both adhesive systems together . Statistic analysis using log-rank test showed no statistic differences in the overall survival rate between the two material s tested within the observation period . It can be concluded that both adhesive systems tested demonstrated very good clinical performance in the restoration of classes I and II cavities at the end of 2 years
No overall effect was revealed in the meta-analyses , meaning that no influence of the  ER or SE strategy on POS .
SIGNIFICANCE The type of adhesive strategy ( ER or SE ) for posterior resin composite restorations does not influence the risk and intensity of POS .
OBJECTIVES A systematic review and meta- analysis were performed on the risk and intensity of postoperative sensitivity ( POS ) in posterior resin composite restorations bonded with self-etch ( SE ) and etch- and -rinse ( ER ) adhesives .