EVALUATING THE VARIATION IN ROOT CANAL MORPHOLOGY OF MANDIBULAR PREMOLARS USING CONE BEAM COMPUTED TOMOGRAPHY IN NORTH INDIAN POPULATION - AN IN VITRO STUDY

Aim:This invitro study aimed to evaluate the variation in root canal morphology of Mandibular premolars using CBCT in North Indian population. Methods and Material:In this invitro study 120 single rooted extracted mandibular first premolar teeth free of any root caries were included. The teeth were stored in 5.25% sodium hypochlorite for 30 minutes, then cleaned using ultrasonic scalers and finally stored in 10% formalin. The sample was subjected to 3D scan and images were obtained and evaluated to check root canal configuration using Vertuccis classification, shape of canal orifice and length of tooth. Statistical analysis used: The software used for the statistical analysis were SPSS (statistical package for social sciences) version 25.0 and MedCalc software. The statistical tests used were One-way ANOVA (Analysis of Variance) test and chi square test. Results: The results were drawn, and Type I was found to be maximum (80.0%) followed by Type V, Type II, Type IV, Type III. Type VI was minimum (0.8%). There were no samples found for Type VII and Type VIII. Maximum of oval shape was found with a percentage of 31.7% and minimum of 2 orifices in 2.5% of samples. The overall length of mandibular first premolar in north Indian population with a maximum of 25.60 mm and a minimum length of 17.30 mm. Conclusions: Hence concluding that mandibular premolar still stands a mystery in varied region and population in every single case attempted for endodontic treatment and thorough knowledge of the canal anatomy is must for successful endodontic treatment.