Cone-beam computed tomography evaluation of short- and long-term airway change and stability after orthognathic surgery in patients with Class III skeletal deformities: bimaxillary surgery and mandibular setback surgery
Cone-beam computed tomography evaluation of short- and long-term airway change and stability after orthognathic surgery in patients with Class III skeletal deformities: bimaxillary surgery and mandibular setback surgery
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DOI：
10.1016/j.ijom.2011.09.008
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发表时间：
2012-01-01
影响因子：
2.4
通讯作者：
Cho, B-H.
中科院分区：
文献类型：
--
作者：
Park, S-B.;Kim, Y-I.;Cho, B-H.
本研究的目的是评估36例接受双颌手术或单独下颌后移的III类患者的上气道空间的体积变化，并进一步使用锥形束计算机断层扫描（CBCT）分析术后稳定性与气道变化之间的关系。在三个阶段进行三维（3D）CBCT检查：T0（术前）、T1（术后平均4.6个月）和T2（术后平均1.4年）。结果显示，下颌后移组术后4.6个月口咽和下咽气道容积显著减小（p < 0.05），术后1.4年这些减小的气道仍未恢复。在双颌手术组中，口咽气道容积也减少。斯皮尔曼相关分析显示，在单独下颌手术组中，下咽区前后长度与术后稳定性相关，而鼻咽横截面积仅在双颌手术组中与上颌复发相关（p < 0.05）。
The purpose of this study was to evaluate the volumetric change of the upper airway space in 36 Class III patients who had undergone bimaxillary surgery or isolated mandibular setback, and, further, to analyse the relation between post-surgical stability and airway change using cone-beam computed tomography (CBCT). A three-dimensional (3D) CBCT examination was performed at three stages: T0 (before surgery), T1 (an average of 4.6 months after surgery), and T2 (an average of 1.4 years after surgery). The results showed that the volumes of the oropharyngeal and hypopharyngeal airways decreased significantly 4.6 months post-surgery in the mandibular setback group (p < 0.05), and these diminished airways had not recovered 1.4 years post-surgery. In the bimaxillary surgery group, the volume of the oropharyngeal airway also decreased. A Spearman correlation analysis showed that the anteroposterior length of the hypopharyngeal area had a correlation with post-surgical stability in the isolated mandibular surgery group, and that the cross-sectional area of the nasopharynx was correlated with maxillary relapse only in the bimaxillary surgery group (p < 0.05).