Hatab N A, Konstantinović V S, Mudrak J K H
Clinic of Maxillofacial Surgery, School of Dental Medicine, University of Belgrade, Dr Subotića 4, 11000 Belgrade, Serbia.
Clinic of Maxillofacial Surgery, School of Dental Medicine, University of Belgrade, Dr Subotića 4, 11000 Belgrade, Serbia.
J Craniomaxillofac Surg. 2015 May;43(4):491-6. doi: 10.1016/j.jcms.2015.02.007. Epub 2015 Feb 21.
The aim of this study was to evaluate the two-dimensional (2D) and three-dimensional (3D) changes in the pharyngeal airway space (PAS) in 20 class III patients who underwent mono- or bimaxillary surgery using cone-beam computed tomography (CBCT). CBCT examination was obtained before surgery (T1) and at least 3 months after surgery (T2). The pharyngeal airway of each patient was studied at three levels: the level of the posterior nasal spine, the level of the most inferior point of the soft palate, and the level of the top of the epiglottis. At each of these levels, the anteroposterior and lateral dimension as well as cross-sectional area were measured. The volume of the whole PAS and volume between each cross section were also measured. The area and anteroposterior dimensions at the level of the most inferior point of the soft palate significantly decreased in patients who underwent monomaxillary surgery. The volume of the PAS decreased in both groups, but decreased significantly only in the monomaxillary group. The upper volume decreased in the mono- and increased in the bimaxillary group. The lower volume significantly decreased in the monomaxillary group. However, results showed that PAS decreased more after mono-than after bimaxillary surgery.
本研究的目的是使用锥形束计算机断层扫描（CBCT）评估20例接受单颌或双颌手术的III类患者咽气道空间（PAS）的二维（2D）和三维（3D）变化。在手术前（T1）和手术后至少3个月（T2）进行CBCT检查。对每位患者的咽气道在三个层面进行研究：后鼻棘层面、软腭最下端层面和会厌顶部层面。在每个层面测量前后径、左右径以及横截面积。还测量了整个PAS的体积以及各横截面之间的体积。接受单颌手术的患者软腭最下端层面的面积和前后径显著减小。两组患者的PAS体积均减小，但仅单颌组显著减小。单颌组上部体积减小，双颌组上部体积增加。单颌组下部体积显著减小。然而，结果显示单颌手术后PAS的减小幅度大于双颌手术。
