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 .
Short- and long-term clinical evaluation of post-operative sensitivity of a new resin-based restorative material and self-etching primer.
This study evaluated the post-operative sensitivity of posterior restorations restored with a resin-based restorative material and a self-etching primer .  Forty-six restorations , 28 Class I and 18 Class II were placed by two clinicians in 25 patients . After cavity preparations were completed under rubber dam isolation , they were restored using a self-etching primer ( Fluorobond , Shofu Inc , Kyoto , Japan ) and a resin-based restorative material ( Beautifil , Shofu Inc , Kyoto , Japan ) . Patients were contacted on days 2 and 7 post-operatively and question ed regarding the presence of sensitivity , the stimuli that created sensitivity , the length of time the sensitivity lasted and its intensity using a rating scale from slight to severe . If sensitivity was experienced on day 7 , patients were also contacted on days 14 , 30 and 90 to assess the degree of sensitivity . All patients were recalled after 6- , 12- and 24-months for further evaluation of any sensitivity experienced . Chi-Square and Fisher 's Exact Test were used for statistical analysis . At day 2 , six restorations were sensitive to cold with no statistical difference ( p > 0.05 ) from the restorations that were not sensitive . At day 7 , only two restorations were sensitive . No sensitivity was present after day 14 , which was also confirmed at the six-month recall . No correlation could be established among the duration of the sensitivity , the degree of pain and the causes that initiated sensitivity ( p > 0.05 ) . At one-year recall , one restoration was replaced due to post-operative sensitivity that started after the six-month recall . No sensitivity was noted at the 24-month recall . No correlation ( p > 0.05 ) was found between sensitive restorations and those with a normal response throughout the study . The study showed that Fluorobond self-etching primer and Beautifil resin-based restorative material , when placed in posterior restorations , do not result in long-term post-operative sensitivity
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 .