Alterations in upper airway dimensions following bimaxillary and mandibular setback surgery in skeletal Class III patients: A cone-beam computed tomography study

IF 3.1 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Dental Sciences Pub Date : 2025-03-27 DOI:10.1016/j.jds.2025.03.017

Ramish Hussain , I. Chen , Jui-Ting Hsu , Pei-Wen Huang , Yuan-Chien Chen , Jian-Hong Yu , Heng-Li Huang

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引用次数: 0

Abstract

Background/Purpose

Orthognathic surgery can result in a decreased upper airway volume, potentially increasing the risk of developing sleep disorders. This study aimed to evaluate upper airway changes following bimaxillary orthognathic surgery and mandibular setback surgery alone. Additionally, to investigate any correlation between factors such as mandibular plane angle and mandibular length on airway changes in skeletal Class III patients, utilizing cone beam computed tomography (CBCT) data.

Materials and methods

A total of 78 patients with maxillomandibular discrepancy ≤ −2 were divided to Group 1 (mandibular setback, n = 17) and Group 2 (maxillary advancement with mandibular setback, n = 61). CBCT scans were obtained 2–3 weeks preoperatively and 6 months postoperatively to measure airway volumes, minimal axial area, linear dimensions, and angles using Dolphin Imaging software. Statistical analyses, including the Wilcoxon signed-rank test and paired t-test, assessed pre- and postoperative effects, while Spearman's correlation evaluated the associations between variables and postoperative changes.

Results

The results revealed a significant reduction in oropharynx volume (OPV), hypopharynx volume (HPV), total pharyngeal volume (TPV), and minimum cross-sectional area (CSA^min) following mandibular setback surgery, while bimaxillary surgery of mandibular setback with maxillary advancement resulted in significant decreases in nasopharynx volume (NPV), TPV, and CSA^min. Both surgical approaches caused narrowing of the anteroposterior length (APL) and significant constriction in the lateral transverse width (LTW) of the pharyngeal airway space, with Spearman's correlation indicating no significant relationships between these variables and postoperative changes.

Conclusion

Both types of orthognathic surgeries caused significant decreases in total airway volume, CSA^min and lateral airway dimension.

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III类骨骼患者双颌和下颌手术后上呼吸道尺寸的改变：锥束计算机断层扫描研究

背景/目的正颌手术可导致上呼吸道体积减少，潜在地增加发生睡眠障碍的风险。本研究旨在评估单独双颌正颌手术和下颌骨后退手术后上呼吸道的变化。此外，利用锥束计算机断层扫描（CBCT）数据，探讨下颌平面角度和下颌长度等因素与骨骼III类患者气道变化的相关性。材料与方法将78例上颌下颌差异≤- 2的患者分为1组（下颌后退，n = 17）和2组（上颌前进伴下颌后退，n = 61）。术前2-3周和术后6个月进行CBCT扫描，使用Dolphin Imaging软件测量气道体积、最小轴向面积、线性尺寸和角度。统计分析，包括Wilcoxon符号秩检验和配对t检验，评估术前和术后效果，而Spearman相关评估变量与术后变化之间的关联。结果下颌骨退行手术后，口咽体积（OPV）、下咽体积（HPV）、咽总体积（TPV）和最小横截面积（CSAmin）显著降低，而下颌骨退行伴上颌前移的双颌手术导致鼻咽体积（NPV）、TPV和CSAmin显著降低。两种手术入路均导致咽气道前后长度（APL）变窄和侧横宽度（LTW）明显缩小，Spearman相关表明这些变量与术后变化无显著关系。结论两种正颌手术均可显著降低气道总容积、CSAmin及侧气道尺寸。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Dental Sciences 医学-牙科与口腔外科

CiteScore

5.10

自引率

14.30%

发文量

348

审稿时长

6 days

期刊介绍： he Journal of Dental Sciences (JDS), published quarterly, is the official and open access publication of the Association for Dental Sciences of the Republic of China (ADS-ROC). The precedent journal of the JDS is the Chinese Dental Journal (CDJ) which had already been covered by MEDLINE in 1988. As the CDJ continued to prove its importance in the region, the ADS-ROC decided to move to the international community by publishing an English journal. Hence, the birth of the JDS in 2006. The JDS is indexed in the SCI Expanded since 2008. It is also indexed in Scopus, and EMCare, ScienceDirect, SIIC Data Bases. The topics covered by the JDS include all fields of basic and clinical dentistry. Some manuscripts focusing on the study of certain endemic diseases such as dental caries and periodontal diseases in particular regions of any country as well as oral pre-cancers, oral cancers, and oral submucous fibrosis related to betel nut chewing habit are also considered for publication. Besides, the JDS also publishes articles about the efficacy of a new treatment modality on oral verrucous hyperplasia or early oral squamous cell carcinoma.