School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, China.
Shandong Key Laboratory of Oral Tissue Regeneration, Jinan, China.
Orthod Craniofac Res. 2023 Aug;26(3):451-457. doi: 10.1111/ocr.12622. Epub 2022 Dec 31.
This study aimed to analyse changes in the nasal cavity and maxillary sinus structure and function in patients with skeletal class III malocclusion 1 year after bimaxillary surgery.
In this study, cone-beam computed tomography (CBCT) images of 20 patients (10 men and 10 women; mean age 24.3 ± 3.4 years) with skeletal class III malocclusion who underwent Le Fort I osteotomy and bilateral sagittal split osteotomy were obtained before and 1 year after the surgery. CBCT data were stored opened with element 3D (E3D) to establish a nasal airway model (the paranasal sinus includes only the maxillary sinus). Ansys (ANSYS) software is used for simulation and analysis.
The maxillary sinus and nasal cavity volumes decreased significantly 1 year after the surgery. After surgery, the volume of nasal cavity decreased by 13.5%, and the average volume of maxillary sinus decreased by 7.8%. There was no significant difference in the degree of deviation of the septum and nasal cavity resistance, and air distribution in the maxillary sinus did not change. The nasal cavity wall shear stress change was similar to that before surgery.
The maxillary sinus volume and nasal cavity volume of patients with skeletal class III malocclusion changed significantly after bimaxillary surgery, but there was no significant change in nasal ventilation function 1 year after surgery.
本研究旨在分析骨性 III 类错颌患者双颌手术后 1 年鼻腔和上颌窦结构及功能的变化。
本研究共纳入 20 例（男 10 例，女 10 例；平均年龄 24.3±3.4 岁）骨性 III 类错颌患者，均接受 Le Fort I 截骨术和双侧矢状劈开截骨术。术前及术后 1 年采用锥形束 CT（CBCT）对患者进行扫描。使用 element 3D（E3D）软件打开 CBCT 数据，建立鼻腔气道模型（鼻窦仅包括上颌窦）。使用 Ansys（ANSYS）软件进行模拟分析。
术后 1 年，上颌窦和鼻腔容积显著减小。术后鼻腔容积减少了 13.5%，平均上颌窦容积减少了 7.8%。鼻中隔偏曲程度、鼻腔阻力和上颌窦内空气分布无明显变化。鼻腔壁切应力变化与术前相似。
双颌手术后骨性 III 类错颌患者上颌窦容积和鼻腔容积明显改变，但术后 1 年鼻腔通气功能无明显变化。
