Cone-Beam Computed Tomography Evaluation of Pharyngeal Airway Space Changes After Bimaxillary Orthognathic Surgery in Patients With Class III Skeletal Deformities: A 6-Year Follow-Up Study

摘要: Purpose The aim of the present study was to investigate volumetric and 2-dimensional (2D) changes in pharyngeal airway space (PAS) after bimaxillary orthognathic surgery (maxillary advancement mandibular set back) patients with skeletal Class III deformities. Patients Methods In retrospective study, deformities were treated at Pusan National University Hospital (Busan, South Korea) had undergone cone-beam computed tomography examination preoperatively, immediately postoperatively, 6.0 ± 0.6 months 6.2 ± 1.3 years postoperatively. anteroposterior length (APL), largest transverse width (LTW), cross-sectional area (CSA) 4 reference planes PAS volume measured. Spearman's correlation analysis used assess between movements. Results subjects included 11 men 12 women. Their mean age 22.7 ± 4.7 years (range, 18 33 years). APL CSA on PNS-Vp, CV1, CV2 planes, LTW CV1 plane, oropharyngeal total decreased 6 months However, thereafter, no significant 2D or observed until 6.2 years long-term change CV3 plane correlated negatively relapse. Conclusions morphology 6-month postoperative stable 6 years for who maxillary setback.