Abstract
Aims: The current study aims to investigate the root canal morphology of root canals of mandibular premolar teeth via cone-beam computed tomography (CBCT) among a sample of the north Indian population.
 Study Design: Retrospective observational study.
 Place and Duration of Study: Department of conservative dentistry and endodontics.
 Methodology: A total of 240 CBCT images were examined in the study. The Mandibular premolars were identified, and canal configurations were classified according to vertucci classification. Root canal configurations were investigated using a chi-square test.
 Results: Of the total 240 Mandibular premolars, vertucci type I was found in 86.66% in Mandibular first premolars followed by type v (8.33%) and type iv (5%). Vertucci type I was found in 96.6% in Mandibular second premolars followed by type v (1.66%), type iii (0.8%) and type viii (0.8%).
 Conclusion: The root morphology of Mandibular premolars in the north Indian population demonstrated a high degree of variability. However, the clinician should be aware about the possible anatomic variations of these teeth and their relationship with the adjacent anatomic structures while planning and performing endodontic, restorative, periodontal, and surgical procedures.
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