Abstract
Aims: The purpose of this in vitro study was to evaluate and compare the fracture resistance of endodontically treated teeth using three different intra-orifice barriers. Settings and Design: This study was conducted at the department of conservative dentistry and endodontics, an in vitro study. Subjects and Methods: Forty freshly extracted single-rooted mandibular bicuspids (n = 40) were decoronated to obtain a 14-mm standard root length and all the canals were enlarged with ProTaper up to size F3 and they were obturated with gutta-percha using AH Plus sealer and randomly divided into 4 groups (n = 10). Group I: Control group obturated with gutta-percha only. Groups II, III, and IV had placement of intra-orifice barriers after the removal of 3-mm coronal gutta-percha such that Group II: Ever X posterior; Group III: Beautifil II; and Group IV: Tetric N-Ceram. Mounting of specimens was done in acrylic resin to expose coronal 3 mm and tested using the universal testing machine. Statistical Analysis Used: Data were analyzed for significance by ANOVA and Tukey’s post hoc test. Results: Ever X posterior group showed better fracture resistance and the control group is the least among the groups. Conclusions: Placement of intra-orifice barriers significantly improves the fracture resistance compared with the control group.
Published Version
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