Quantification of pharyngeal airway space changes after two-jaw orthognathic surgery in skeletal class III patients

作者：Ziqi Zhang, Shuze Wang, Jing Li, Zhijie Yang, Xia Zhang, Xiaofeng Bai · 发表于：BMC Oral Health · 年份：2023 · DOI：10.1186/s12903-023-03075-y · 被引用次数：8 · 研究领域：Obstructive Sleep Apnea Research、Orthodontics and Dentofacial Orthopedics、Temporomandibular Joint Disorders

Abstract Background Skeletal class III malocclusion is a common dentofacial deformity. Orthognathic treatment changes the position of the jaws and affects the shape of the upper airway to some extent. The aim of this study was to use multislice spiral computer tomography data and orthognathic knowledge to quantify the relationship between the amount of surgical movement of the maxilla or mandible in all three spatial planes and the changes in airway volume that occurred. Methods A retrospective study of 50 patients was conducted. Preoperative and postoperative linear changes related to skeletal movements of the maxilla and mandible were measured and compared to changes in the most constricted axial level (MCA) and its anteroposterior (MCA-AP) and transverse diameters (MCA-TV). Correlation tests and linear regression analysis were performed. Results Significant interactions were observed between the anterior vertical movement of the maxilla and the MCA-AP. The anteroposterior movement distance of the mandible was significantly correlated with changes in the oropharyngeal, velopharyngeal, total airway volume, MCA, MCA-AP, and MCA-TV. The change in the mandibular plane angle was significantly correlated with the change in velopharyngeal volume, total airway volume (nasopharynx, oropharynx, velopharynx), and MCA. The linear regression model showed that oropharyngeal volume decreased by 350.04 mm 3 , velopharyngeal volume decreased by 311.50 mm 3 , total airway volume decreased by...