Impairment of the inferior alveolar nerve after sagittal split osteotomy.

摘要: Summary The incidence and degree of neurosensory disturbance the inferior alveolar nerve, as well its recovery course, were studied on 46 sides in 23 patients who had undergone bilateral sagittal split osteotomies, by means subjective symptoms, light touch, anaesthesiometer two-point discrimination. was classified into mild, moderate severe grades threshold pressure shown tests with anaesthesiometer. disturbance, which almost exclusively limited to mild (37%) (28%) grades, observed 67% sample at one week. disappeared completely within three months postoperatively most sites year half severely affected sites. Although delayed other disturbed sites, grade a years. overall 15%. Computed tomographic examination ascending ramus showed that narrowest width between mandibular canal buccal cortical plate ranged from 0 mm 3.2 mean 1.6 ± 0.9 (SD) it less than 1.2 91% whereas distributed range no or disturbance. importance preoperative computed tomography indicate location use thin cement spatula for osteotomy stressed, avoid reduce postoperative development impairment.