An Anatomical Study of Dry Mandibles to Determine the Important Surgical Reference Points in Ramus Osteotomy - An Evaluative Study.

INTRODUCTION

The variable relation and clinical significance of mandibular foramen (MF) and with inferior alveolar neurovascular bundle (IANB) is important for dental surgeons. Knowing the landmarks on the ramus of the mandible is of paramount importance to perform the surgery without causing damage to the neurovascular bundle.

MATERIALS AND METHODS

This study was conducted on 85 dry adult mandibles of unknown sex and age. The distances were measured from the anatomical reference points (anti-, and MF) using digital callipers.

RESULTS

The distance from the anti- to the anterior border of the ramus (A) was significantly longer on the right side (14.91 mm) than on the left side (14.5 mm). There was a significant difference in mean distances between the anti- and MF of both the sides ( ≤ 0.005). No significant difference was noted in the distances between the and the Anti-, observed for the posterior (B, = 0.75) and the inferior margin of the mandible (D, = 0.54). However we found correlation of vertical distances of anti-Lingula with Lingula and MF exhibited moderate positive correlation.

DISCUSSION

The IANB is prone to damage during mandibular surgery. Using anti- alone as a reference point is not guaranteed, but it is still an important anatomical landmark for the surgeon to operate.