Impact Of Different Taper On Fracture Resistance Of Endodontically Treated Teeth: An In Vitro Study

Fracture Resistance Of Endodontically Treated Teeth

Abstract

Background: Various taper file systems are available and it is considered that by reduction in taper of the preparation might reduce the chances of fracture. Therefore, this study is performed. Objective: To assess the influence of different taper of root canal preparation on the fracture resistance of endodontically treated mandibular premolars. Material And Methods: Twenty extracted mandibular premolars with single canals were selected and randomly divided into two groups (n = 20). In group 1 (n = 10) canals were prepared with 4 % taper. In group 2 (n = 10) canals were prepared with 6 % taper, with apical diameter 25 using Hyflex CM file system. Irrigation was done with 5.25% NaOCl, EDTA and saline. Obturation was done with Gutta-percha using single cone obturation technique followed by restoration of access cavity with resin composite. Teeth were mounted in acrylic resin and fracture resistance was checked using UTM, data examined statistically. Result: Significant difference was registered between 4% taper (269.6 N) and 6% taper (249.3 N) of root canal preparation regarding the fracture resistance of premolars tested (p =0.005). Conclusion: It can be concluded that, minimizing the taper of the preparation, fracture resistance increases by preserving the amount of tooth structure loss during root canal treatment. [Garudkar V Natl J Integr Res Med, 2023; 14(3): 39-43, Published on Dated: 18/05/2023]