A comparative evaluation of fracture resistance of endodontically treated teeth using four different intraorifice barriers: An study.

Aim: The aim of this study is to evaluate and compare the fracture resistance of endodontically treated teeth using four intraorifice barriers.

Materials And Methods: Fifty extracted single-rooted mandibular premolars were selected, decoronated, and prepared with rotary Protaper universal system and obturated with gutta-percha and AH Plus sealer. Samples were divided into five groups ( = 10) on the basis of intraorifice barrier material used.