Assessment of the Impact of Two-Jaw Orthognathic Surgery on 3D Airway Volume in Patients with Skeletal Class III Patterns

Abstract

Abstract The purpose of this study was to assess the impact of two-jaw orthognathic surgery on the 3D airway volume in patients with skeletal Class III patterns. The study included 27 adult patients with dental Class III malocclusion and mandibular prognathism who underwent two-jaw orthognathic surgery. The changes in airway volume were evaluated using computed tomography simulation and segmentation was carried out using 3D Slicer. Results showed that the average upper airway volume increased by 1979.1 mm3, the oropharyngeal airway volume increased by 336.4 mm3, and the hypopharyngeal airway volume decreased by 1087.5 mm3. Despite this decrease, the overall airway volume still increased by an average of 1228.1 mm3. The findings suggest that two-jaw orthognathic surgery has a positive impact on the overall airway volume in patients with skeletal Class III patterns. Clinical Trial Registration Number: IRB No: 202101949B0C501