Abstract
Intended for the 268 cases which did an orthognathic surgery for lower jaw with diacrisis of jaw anamorphosis symptom object. Executed auditory tube function test in preand post-operation, and searched auditory tube dysfunction of postoperative. Recognized auditory tube dysfunction in a high rate after lower jaw orthognathic surgery. The case that was conscious of a symptom by auditory tube functional disorder after art was 49 examples (18.3%), and recognized auditory tube dysfunction in auditory tube examination was 162 cases (60.4%). The auditory tube dysfunction of postoperative related to as a result of preoperative Tubo-tympano-aerodynamic graphy(TTAG), but there was not the correlation as a result of sonotubometry. TTAG was the significant examination which can predict aggravation of auditory tube mechanism. It became clear that auditory tube dysfunction brought about recovered by follow-up naturally by
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