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目的 建立正常人生理性腭咽闭合不全参数，为评价腭裂患者腭咽闭合功能和软腭活动提供一种客观的方法。方法 采用 Ｘ 线头影定位测量分析技术对 ２２２ 名腭咽闭合不全（ｖｅｌｏｐｈａｒｙｎｇｅａｌｉｎｃｏｍ ｐｅｔｅｎｃｅ， Ｖ Ｐ Ｉ）的正常人群进行分析研究，建立了正常人 Ｘ线头颅定位测量腭咽闭合功能参数。结果 Ｘ 线的腭咽闭合矢状收缩不全率（ Ｒ Ｖ Ｓ Ｒ）与鼻咽内窥镜检查的腭咽闭合不全率（ Ｒ Ｖ Ｐ Ｉ）呈显著的相关关系。结论 Ｘ 线头影测量方法是评价腭咽闭合功能和软腭活动的一种有效方法。
Objective To establish normal physiological velopharyngeal insufficiency parameters and to provide an objective method for evaluating velopharyngeal function and soft palate activity in patients with cleft palate. Methods Totally 222 normal subjects with velopharyngeal incompatibility (V P I) were analyzed by X-ray cephalometric analysis. The functional parameters of velopharyngeal closure were established by X-ray cranial positioning. Results X-ray palatopharyngeal sagittal insufficiency (R V S R) and nasopharyngeal endoscopy velopharyngeal failure rate (R V P I) was significantly correlated. Conclusion X-cephalometry is an effective method to evaluate velopharyngeal function and soft palate activity.