Morphological comparison of maxilloface, tongue posture, and pharyngeal airway before and after the mandibular setback surgery
In the present study, we reviewed the patients who were diagnosed as skeletal mandibular prognathism who underwent a sagittal split ramus osteotomy (SSRO) comparing the perioperative change of the tongue posture and the pharyngeal airway. Also, we considered it versus a postoperative change by SSRO about maxillofacial morphology of obstructive sleep apnea hypopnea syndrome (OSAS) and the pharyngeal airway. We reviewed 20 patients diagnosed as skeletal mandibular prognathism in our hospital. We compared the lateral cephalogram data of the patients one month before the operation (T1) one month after (T2) and one year after (T3) with 53 students belonging to our university setting as the normal group who displayed nothing abnormal with the maxillofacial, and 21 patients diagnosed as OSAS at the Tsukuba University Hospital.