Survival of direct resin restorations in posterior teeth within a 19-year period (1996-2015): A meta-analysis of prospective studies.

Objectives: The aim of this study is to analyze the survival of posterior composite restorations published within the last 19 years (1996-2015).

Methods: In this study only prospective, clinical trials with specification of the failure rate according to Class I/II composite fillings were included. Studies were analyzed according to the observation period (all studies vs.