Modified technique for preservation of inferior alveolar nerve during mandibulectomy.

Abstract

The purpose of this article is to introduce the modified technique of preservation of the inferior alveolar nerve (IAN) during mandibulectomy for a benign lesion. Five cases of osteofibrous hyperplasia and 3 cases of centricity osteomyelitis were included. During surgery, the IAN was marked using a planned cutting guide. Using an oscillating saw, the depth of the osteotomy along the IAN was controlled until the bone cortex was cut through. After splitting, the bony section was removed, leaving the neurovascular bundle intact. The sensation of the lower lip was evaluated using current perceptive threshold testing during follow-up. After follow-up for 6-27 months, no recurrence or secondary deformity was found. One patient had severe sensory disturbance. With the use of a cutting guide and osteotomy tricks, mandibulectomy with preservation of the IAN can be accurately performed.