CBCT EVALUATION OF THE SHAPING CHARACTERISTICS OF FIVE DIFFERENT FILE SYSTEMS IN MESIAL CANALS OF MANDIBULAR FIRST MOLARS– AN EX VIVO STUDY

• Dr. Anil Dhingra,  
• Dr. Sheetal Grover,  
• Dr. Rohit Babu,*  
• Dr. Seema Dixit,  
• Dr. Anshdeep Singh,  
• Dr. Priya Pundir

Abstract

Background: Cone-Beam Computed Tomography (CBCT) has revolutionized endodontic research by providing detailed 3D imaging, crucial for assessing the shaping characteristics of endodontic file systems. In the challenging mesial canals of mandibular first molars, where complex anatomy often complicates treatment, CBCT offers precise evaluation of how different file systems shape these canals. This ex vivo study compares five distinct file systems, analyzing their ability to maintain the original canal curvature and ensure effective cleaning. The study aims to identify the most effective file systems, potentially improving clinical outcomes in endodontic therapy. Aim: This ex vivo study compared the shaping characterstics of five Ni-Ti rotary File Systems, File Univesal X7 Edge Endo, Bassilogic ProDesign Logic, Gen Endo Coltene Whaledent Pvt. Ltd., Endo Star E3 Azure Basic, Mani Jizai using Cone Beam Computed Tomography (CBCT). Material and Methodology: One hundred extracted human permanent mandibular first molars with mesial root curvature angles ranging from 20-30 degrees were divided into five groups (n=20 each). The teeth were imaged using CBCT with CS9300 equipment, set at 84 kV, 5 mA, and a 10.8-second exposure, achieving a resolution of 90 microns and a slice thickness of 76 microns to obtain a pretreatment outline of the root canals. All scans were reoriented along the x, y, and z axes. Canal transportation and root canal volume were evaluated at 0.0, 1.0, 2.0, 3.0, 4.0, and 5.0 mm intervals. The mean differences in volume and area were analyzed using one-way ANOVA to determine the variance between the five different file groups. Results: Gen Endo File System did the least modifications in the Canal Area and Volume. Conclusion: Within the parameters of this study it was concluded that GEN ENDO Files did the least modifications in canal anatomy as compared to other groups.

Keywords

CBCT - cone beam computed tomography