Aim: To evaluate neurosensory disturbance after using separators Vs chisels in bilateral sagittal split osteotomy. Methods: A total of (18 patients) 36 sides indicated for BSSO randomly assigned to 2 equal parallel groups; 9 patients sides) treated (control group) and were by (intervention group). The was assessed each side. Result: After one year follow up separator group showed dysfunction 11...