高角型病例不同矢状骨面型口咽气道形态特征的研究

CBCT measurement and analysis of morphological characteristic of oropharyngeal airway with different sagittal skeletal pattern in high angle adults

目的通过CBCT影像比较高角不同矢状骨面型成人口咽气道三维形态的差异,探讨口咽气道各段与颌面部骨骼形态间的关系。方法选取60例高角成人患者,按照ANB角的大小将所有患者分为骨性Ⅱ类、Ⅰ类、Ⅲ类三组,每组20例患者,男女比例为1∶1。利用Invivo Dental 5.1分析软件将每例患者CBCT图像的正中矢状平面和轴向平面在冠状、矢状、轴向三维空间进行调整,然后对腭咽、舌咽、口咽总气道进行线距、体积以及最小截面积测量,比较不同组间以及不同性别间的差异。结果不同矢状骨面型间只有会厌顶横径(W-ETP)的差异具有统计学意义(P<0.05);不同性别间舌咽气道高(H-GP)、口咽气道总高(H-Total)、后鼻棘横径(W-PNSP)、会厌顶横径(W-ETP)、舌咽气道体积(V-GP)、口咽气道总体积(V-Total)的差异具有统计学意义(P<0.05),且男性均大于女性。结论高角不同矢状骨面型成人口咽气道大小形态的差异仅体现在舌咽段最下端横径,男性口咽气道较女性更大更长。

Objective To investigate the relationship between the morphology of the oropharyngeal airway and themaxillofacial skeletal morphology by comparing the three-dimensional morphology of the oropharyngeal airway in different sagittal features of the high angle adult.Methods60high angle adults aged18to36years were divided into3groups based on their ANB angles,there were20adults in each group,the number of males were equal to females.TheIn vivo Dental5.1software for reconstructing the CBCT image of each one was used,the middle sagittal plane and axialplane in coronal,sagittal and axis view was adjusted,then the distances,volumes and minimum cross-sectional areaswere measured.The differences among3groups and between different gender were compared.Results There was statistical difference in W-ETP among3groups(P<0.05).There were statistical difference in H-GP、H-Total、W-PNSP、W-ETP、V-GP、V-Total(P<0.05)between males and females,and these measurements of males were bigger than of females.Conclusion The difference of the size and shape of the oropharyngeal airway of high angle adults among different sagittal skeletal patterns was mainly reflected in the lowest width of glossopharyngeal airway,the oropharyngeal airway of males was bigger and longer than females.