Morphological and Morphometric Study of the Mandibular Canal and Mental Foramen in Adult Mandibles Using Orthopantomograms (OPG) in the South Indian Population of Telangana
Background: The mandibular canal (MC) and mental foramen (MF) are critical anatomical landmarks of the mandible that house the inferior alveolar neurovascular bundle. Accurate identification of their morphology, position, and course is essential for safe dental and maxillofacial surgical procedures. Variations in these structures have been documented across populations, necessitating region-specific morphometric data. Aim: To evaluate the morphology, course, length, and positional variations of the mandibular canal and mental foramen in the South Indian population of Telangana using digital orthopantomograms (OPGs). Materials and Methods A retrospective cross-sectional radiographic study was conducted using 400 high-quality digital OPGs collected from a private diagnostic center in Telangana. Subjects aged 20–75 years were divided into two age groups: Group A (20–40 years) and Group B (41–75 years). Measurements were performed using E-Soft Dent 2.0 software. Statistical analysis was done using SPSS version 26.0. Descriptive statistics, Kolmogorov–Smirnov test, Mann–Whitney U test, and Chi-square test were applied. Results The majority of mental foramina evaluated belonged to Group A (20–40 years) constituting 54.5% of the study population, whereas Group B (41–75 years) accounted for 45.5%. Out of 400 mental foramina evaluated, 203 (50.7%) were from males and 197 (49.3%) were from females. On the right side, the mental foramen was predominantly round in shape (98.5%), while only 1.5% were oval. On the left side, the mental foramen was predominantly round (98.5%), with only 1.5% presenting an oval shape. The mental foramen was predominantly round in shape on both right and left sides (98.5%), while only 1.5% were oval. No significant side-wise variation was observed. Conclusion
The study highlights significant age-related and morphological variations in the mandibular canal and mental foramen. Accurate localization is crucial to prevent neurovascular injury during dental procedures. Population-specific anatomical data enhances surgical safety and implant planning in the Telangana region.