Change in the Upper Airway of Patients With Obstructive Sleep Apnea Syndrome Using Computational Fluid Dynamics Analysis: Conventional Maxillomandibular Advancement Versus Modified Maxillomandibular Advancement With Anterior Segmental Setback Osteotomy.

摘要: Objective The aim of the study was to compare effect conventional maxillomandibular advancement (MMA) and modified MMA with anterior segmental setback osteotomy (MMA-ASSO) on airway changes in patients obstructive sleep apnea syndrome (OSAS) using three-dimensional computational fluid dynamics (3D-CFD) analysis. Methods Two adult male Class I malocclusion, lip protrusion, acute nasolabial angle, OSAS were treated (Case 1) MMA-ASSO 2). Individualized 3D models fabricated computed tomography data obtained 1 month before (T0) at least 6 months after surgery (T1). A total 7 cross-sectional areas established, starting just above hard palate (plane interval mm caudally. Airflow velocity negative pressure investigated CFD analysis, polysomnography studies performed T0 T1. Results There improvement apnea-hypoapnea index lowest O2 level (T0 versus T1; 43.2 15.2, 79% 90% Case 1; 61.0 6, 89% 92% At plane 2 (retropalatal area) Cases 2, there increase smallest (57.9% 28.4%), decrease airflow peak expiration (49.5% 31.7%; 88.4% 54.3%), end (53.2% 32.2%; 83.2% 47.9%), inspiration (53.1% 29.2%; 75.3% 48.2%). Conclusion Modified method might be an effective treatment option for problems esthetic facial profile.