An In Vitro Comparison of Coronal Microleakage of Three Orifice Barriers Filling Materials

摘要

IntroductionA coronal barrier in root-filled teeth is one of the most effective methods for prevention of coronal microleakage. The aim of this study was to compare coronal microleakage of three materials [light-cured glass-ionomer (GI), mineral trioxide aggregate (MTA), and composite resin] as coronal barriers.