【摘要】 目的:通过头影测量分析骨性下颌前突患者双侧下颌支矢状劈开截骨术后咽腔气道的变化,为术后保持与防止复发提供依据。方法:骨性下颌前突患者20例,均接受口内入路的下颌支矢状劈开截骨术。术前1周、术后1周、术后6个月拍摄标准颅颌侧位片进行头影测量,通过治疗前、后对照,比较下颌支矢状劈开截骨术后咽腔气道的改变。采用SPSS 17.0软件包对数据进行统计学分析。结果:术后1周与术前1周相比,软腭长度显著增加,咽腔气道显著减小;术后6个月咽腔气道有所恢复,与术后1周相比软腭长度显著减小,咽腔气道显著增加;术后6个月与术前1周相比,软腭长度及咽腔气道变化无显著差异。结论 :骨性下颌前突患者行双侧下颌支矢状劈开截骨术后短期内咽腔气道较术前显著减小,可能加大发生睡眠呼吸暂停综合征的几率。但经过一段时间的组织适应和改建后,咽腔气道有恢复至术前宽度的趋势。更多还原

【Abstract】 PURPOSE: Using X-ray cephalometrics to analyze the alteration of adult patients’ oropharyngeal airway with mandibular prognathism after bilateral sagittal split ramus osteotomy, in order to provide some essentials for treatment and prevention of recurrence. METHODS: Twenty adult patients with mandibular prognathism underwent mandibular setback by way of sagittal split ramus osteotomy. Lateral cephalometrics X-ray films were taken 1 week before treatment, 1 week and 6 months after treatment. The data was collected and analyzed using SPSS 17.0 software package. RESULTS: The patients with skeletal mandibular prognathism underwent orthognathic surgery successfully. The length of soft palate increased and the space of oropharyngeal airway reduced significantly 1 week after surgery(P <0.05); six months after surgery, the length of soft palate reduced and the space of oropharyngeal airway increased significantly( P <0.05). There was no significant difference in the length of soft palate and space of oropharyngeal airway between 1 week before operation and 6 months after operation. CONCLUSIONS: Bilateral sagittal split ramus osteotomy reduced the oropharyngeal airway of patients with skeletal mandibular prognathism significantly in short time, which may cause sleep apnea syndrome. But after a period of adaptation and tissue remodeling, the patients’ oropharyngeal airways are inclined to return to the original position.更多还原