Computational Fluid Dynamic Analysis of the Pharyngeal Airway after Bimaxillary Orthognathic Surgery in Patients with Mandibular Prognathism

This study aimed to analyze pharyngeal airflow characteristics and their relationship with the skeletal movement of maxilla mandible after bimaxillary orthognathic surgery in patients class III (mandibular prognathism) malocclusion. Cone-beam computed tomography (CBCT) was conducted before (T0), immediately (T1), at least six months (T2). Digital imaging communications medicine files were transferred InVivo (Anatomage) software measure changes surgery. The maxillary mandibular position, tongue hyoid bone position analyzed. Patient-specific models reconstructed using 3D-Doctor software. converting stereolithography (STL) file for Ansys integrated computer engineering manufacturing code computational fluid dynamics (ICEM CFD), commercial used calculating geometry, pressure drop adjusted coefficient value. total volume upper airway including nasal cavity reduced by 23% recovered 92.2% initial computation analysis showed a decrease values coefficients slightly different but change statistically insignificant. correlated surgical changes. can affect aerodynamics airway. In clinical practice, this knowledge is useful developing suitable treatment plan.