不同垂直骨面型青少年患者上气道的CBCT研究

摘要

Objective: To study the difference of airway volume among the adolescent subjects with various vertical skeletal patterns. Methods: CBCT records of 88 adolescents with normal sagittal facial pattern were collected and divided into 3 groups according to their FH-MP angle. The subjects of the 3 groups were matched in age and sex. Airway volume and cross-sectional areas were compared among the 3 groups with Dolphin software. Correlation analyses of the airway dimensions with the maxillofacial variables was carried out. Results: There were statistical differences among the 3 groups in volumes of velopharynx,glossopharynx and oropharynx, minimal cross-section area of oropharynx and cross-section area on EP plane,and all the measurements decreased from low angle to normal angle to high angle groups(P ＜ 0. 05). Cross-section areas of HP plane and SP plane in low angle group were significantly larger than that of the normal angle and high angle groups(P ＜ 0. 05). The oropharyngeal airway dimensions showed negative correlation with FMA,and positive correlation with Co-Po,Ar-Gn (except cross-section area of HP). Conclusion: The pharyngeal airway volumes among different vertical skeletal patterns in adolescents are different.%目的: 研究不同垂直骨面型青少年患者口咽部气道的差异.方法: 收集88例矢状骨面型正常的青少年患者的CBCT影像,根据FH-MP角的值将其分为高角组、均角组及低角组,各组的性别和年龄相匹配.应用Dolphin软件进行上气道体积、截面积等的测量,比较各组间的差异及其与颌面部骨骼形态的相关性.结果: 各组间的口咽、腭咽、舌咽体积、口咽段最小截面积以及会厌平面的截面积差异为高角组＜ 均角组＜ 低角组(P ＜ 0. 05).低角组的硬腭和软腭平面截面积大于均角组及高角组(P ＜ 0. 05).口咽各段的体积、截面积及最小截面积与FMA成负相关(P ＜ 0. 05),除硬腭平面截面积外,其余各项与Co-Po、Ar-Gn呈正相关(P ＜ 0. 05).结论: 矢状Ⅰ类不同垂直骨面型青少年患者上气道存在差异.