Several technical modifications based on the anatomical position of the neurovascular bundle
and its bony mandibular canal have been developed, aiming to prevent injury to the
intraalveolar nerve We hypothesized that the incidence of neurosensory disturbance (NSD)
should be reduced using our bilateral sagittal split osteotomy (BSSO) technique, because
direct intra-alveolar nerve injury can be avoided. The aim of this study was to introduce our
modified BSSO technique and evaluate the subsequent incidence of postoperative neurosensory
disturbance of the IAN.