成人骨性Ⅱ类错颌患者不同髁突位置的咽腔气道的锥形束 CT 评估
Cone-beam evaluation of pharyngeal airway space in adult skeletal Class II patients with different condylar positions.
出版信息
Angle Orthod. 2019 Mar;89(2):312-316. doi: 10.2319/040518-253.1. Epub 2018 Nov 20.
OBJECTIVES
To test the null hypothesis that there is no significant difference in pharyngeal airway space among adult skeletal Class II patients with different condylar positions using cone-beam computed tomography (CBCT).
MATERIALS AND METHODS
The CBCT records of 60 patients with skeletal Class II malocclusion (ANB angle ≥ 4°, Wits ≥ 0) were selected from the CBCT database. According to the condyle position, the patients were divided in three groups: anterior group (CD ≤ -12%), centric group (-12% ≤ CD ≤ +12%), and posterior group (CD ≥ +12%). Three-dimensional (3D) pharyngeal airway models were reconstructed using InvivoDental software 5.1.3. The volume and area of the pharyngeal airway space were measured in the 3D airway model.
RESULTS
The volume and area of the pharyngeal airway space in the centric group were significantly smaller than those in the posterior group ( P < .01). The volume and area of the pharyngeal airway space were smallest in the anterior group and significantly increased in the centric and posterior groups ( P < .001).
CONCLUSIONS
The null hypothesis was rejected. Significant differences were noted in pharyngeal airway space among adult skeletal Class II patients with different condylar positions.
目的
通过锥形束 CT（CBCT）检验成年骨性Ⅱ类错颌患者中不同髁突位置咽腔气道空间无显著差异的零假设。
材料与方法
从 CBCT 数据库中选取 60 例骨性Ⅱ类错颌（ANB 角≥4°，Wits 值≥0）患者的 CBCT 记录。根据髁突位置，将患者分为三组：前伸组（CD≤-12%）、中切位组（-12%≤CD≤+12%）和后伸组（CD≥+12%）。使用 InvivoDental 软件 5.1.3 重建三维（3D）咽腔气道模型。在 3D 气道模型中测量咽腔气道空间的体积和面积。
结果
中切位组的咽腔气道空间体积和面积明显小于后伸组（P<0.01）。前伸组的咽腔气道空间体积和面积最小，在中切位和后伸位组显著增加（P<0.001）。
结论
零假设被拒绝。在不同髁突位置的成年骨性Ⅱ类错颌患者中，咽腔气道空间存在显著差异。
Zotero 插件