Correlation between upper airway morphological changes and jaw movement after bimaxillary orthognathic surgery in pa-tients with skeletal Class Ⅲ malocclusion
10.13591/j.cnki.kqyx.2024.07.006
- VernacularTitle:骨性Ⅲ类患者双颌正颌手术后上气道形态变化与颌骨移动量的相关性研究
- Author:
Gen LI
1
,
2
;
Songsong GUO
;
Guanhui CAI
;
Lian SUN
;
Wen SUN
;
Hua WANG
Author Information
1. 南京医科大学江苏省口腔疾病研究重点实验室,江苏南京(210029)
2. 南京医科大学江苏省口腔转化医学工程研究中心,江苏南京(210029)
- Keywords:
skeletal Class Ⅲ malocclusion;
bimaxillary orthognathic surgery;
pharyngeal airway;
cone-beam computed tomography
- From:
STOMATOLOGY
2024;44(7):515-521
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the morphological changes in the upper airway after bimaxillary surgery in patients with skeletal Class Ⅲ malocclusion and the relationship between jaw movement and airway changes using CBCT.Methods This study involved 44 individuals(21 males and 23 females)receiving Class Ⅲ bimaxillary surgery.Preoperative and 3-6-month postoperative CBCT data were examined using Dophin3D 11.95 software.The alterations before and after upper airway surgery were analysed using paired t-test and non-parametric Wilcoxon rank sum test.The association between airway alterations and jaw movement was examined using Pearson's correlation coefficient.Results Patients who underwent Class Ⅲ bimaxillary surgery had significantly reduced upper airway volume,sagittal cross-sectional area,and minimum cross-sectional area(P＜0.01).A correlation exists between oropharyngeal volume change and point B change(P＜0.05).When B point recession was＞7 mm,the decrease in upper airway volume increased significantly(P＜0.01),as did the risk of minimum cross-sectional area of the patient's airway(P＜0.01).Conclusion ClassⅢbimaxillary surgery re-duces upper airway capacity.Postoperative reduction in upper airway capacity coincides with mandibular recession.Mandibular reces-sion(＞7 mm)may reduce postoperative upper airway capacity and increase the risk of OSAHS.Patients at risk of upper airway stenosis should have their protocol modified to reduce airway risk.
