Cone-beam Computed Tomography Study of the Root Canal Morphology of Lower Incisors.

Introduction: The present study aims to evaluate the root canal morphology of permanent lower incisors by cone-beam computed tomography (CBCT) according to Vertucci's classification (1984), and to correlate the findings with sex, age group, and side of the dental arch. Materials and Methods: This was a descriptive observational study that used a sample of mandibular CBCT scans performed between 2021 and 2024 at a private dental radiology service. When none of the Vertucci configurations was applicable, type 0 was assigned. Results: Type I was the predominant morphological configuration, followed by type III, for all variables analyzed. Regarding sex, type I was more common among females (71.1%), while type III accounted for 21.2% in both males and females. With respect to age, type I was more common among minors (76.8%), and type III among older adults (23.3%). The type I configuration was more frequently observed on the right side of the dental arch (70.3%), and type III on the left side (21.9%). Conclusion: The anatomical observations of the lower incisors highlight the need for careful analysis of their internal morphology during endodontic treatment.