CONE BEAM COMPUTERED TOMOGRAPHY EVALUATION OF THE ROOT CANAL OBTURATION OF PREMOLARS WITH ATYPICAL ANATOMY

Purpose: The aim of the study is to evaluate, by cone beam computed tomography, the quality of obturation of the root canal system using the hydraulic condensation method and three preparation methods of printed 3D replicas of human premolars with Vertucci type III, IV and V configuration. Materials and methods: The printed 3D replicas of human premolar teeth (n=45) are divided into three groups, depending on the morphology of their root-canal system and the method of preparation: Group 1: 15 specimens with Vertucci type III, IV, and V configuration (5 for each configuration), using a standard preparation technique with a .02 taper; group 2: 15 specimens with Vertucci type III, IV, and V configuration (5 for each configuration), Crown down preparation technique with .06 taper and group 3: 15 specimens with Vertucci type III, IV and V configuration (5 for each configuration), by hybrid preparation technique. All root canals of all specimens were obturated using the hydraulic condensation method. Cone beam computed tomography scans of the obturated endodontic spaces were compared using HOROS software. Results: The quality of the root canal filling did not differ significantly in the three studied groups, with 3D obturation having the highest results in group 3 of the studied. Conclusion: Obturation of premolars with atypical anatomy by the method of hydraulic condensation gives good results in three methods of preparation of the root canal system.