Evaluation of Mineral Trioxide Aggregate, Resin-modified Glass lonomer Cements, and Composite as a Coronal Barrier: An in vitro Microbiological Study.

Aim: The purpose of the study is to evaluate the bacterial micro-leakage of three different materials, mineral trioxide aggregate (MTA), resin-modified glass ionomer cement (RMGIC), and flowable composite, as a coronal barrier against Enterococcus faecalis.

Materials And Methods: A total of 100 human extracted single-rooted teeth were selected. Access opening done, working length determined, and canals were cleaned and shaped with ProTaper F3 and obturated with AH26 and gutta-percha (GP) using lateral condensation technique.