The effect of SSRO of Class Ⅲ malocclusion on the pharyngeal airway and respiratory function during sleep
10.13591/j.cnki.kqyx.2025.02.008
- VernacularTitle:下颌支矢状骨劈开术后退下颌治疗骨性Ⅲ类错(牙合)畸形对上气道和睡眠呼吸通气功能的影响
- Author:
Hui MA
1
;
Wen WANG
;
Yan QIU
;
Zequan HUA
Author Information
1. 徐州医科大学附属口腔医院口腔颌面外科,江苏徐州(221000)
- Publication Type:Journal Article
- Keywords:
sagittal split ramus osteotomy;
Class Ⅲ malocclusion;
CBCT;
pharyngeal airway volume;
polysomnography;
respiratory function during sleep
- From:
STOMATOLOGY
2025;45(2):123-128
- CountryChina
- Language:Chinese
-
Abstract:
Objective To examine the effects of SSRO(sagittal split ramus osteotomy)for Class Ⅲ malocclusion treatment on pha-ryngeal airway space(PAS)and respiratory function during sleep.Methods The subjects were 18 patients in whom mandibular prog-nathism was corrected by sagittal split ramus osteotomy.Morphological changes were studied using cone beam computed tomography at 3 days before surgery and 6 months after surgery.3D models of the craniofacial and pharyngeal airway morphology were reconstructed with a 3D image analysis system(Mimics Innovation Suite).The anteroposterior dimension,lateral width,cross-sectional area of each subject's pharyngeal airway were measured before and after surgery.The three airway volumes and total PAS volume were measured be-fore and after surgery.Single polysomnography(PSG)monitoring was performed using the polysomnography system 3 days before and 6 months after orthognathic surgery,respectively,and the monitoring data were recorded.Statistical analysis of the data was performed using SPSS 25.0 software package.Results SP-AP and SP-CSA decreased after operation(P＜0.05).EP-AP was significantly de-creased(P＜0.01)and EP-CSA decreased(P＜0.05).The oropharynx volume and total PAS volume were significantly decreased,and the epiglottic volume decreased(P＜0.05).There were no significant changes in respiratory function during sleep.Conclusion SP-AP,SP-CSA,EP-AP,EP-CSA,the oropharynx volume,the epiglottic volume and total PAS volume were decreased significantly after surgery.There were no significant changes in respiratory function during sleep.
