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 evaluation of Clearfil photoposterior: 3-year results.
The purpose of this study was to evaluate a new resin composite/bonding restorative system in clinical trials involving human subjects . Sixty restorations were inserted in Class I and Class II preparations in premolars and molars . The enamel margins of the preparations were etched for 60 seconds with 37 % phosphoric acid gel . The dentinal surfaces of cavity preparations were etched for 40 seconds with 37 % phosphoric acid in glycerine ( K-etchant gel ) and bonding agent ( Clearfil Photo Bond ) applied . A resin composite ( Clearfil Photoposterior ) was placed in three increments with a 20 second light cure of each increment and a 60 second light cure of the final increment . All the restorations were evaluated using the USPHS system and M-L indirect scale . At 36 month recalls , compared to baseline , surface texture for essentially all the restorations was rated Bravo , while all other characteristics were rated Alpha . Secondary caries was reported for one restoration during the third year of clinical use . Wear showed an adjusted mean value of 14.6 microns at 36 months or 4.9 microns per year . No cases of clinical post-operative sensitivity to hot , cold , percussion and foods were reported during the length of the study . Clearfil Photoposterior resin composite system has exhibited remarkable wear resistance and no post-operative sensitivity throughout the length of the study
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 .