Abstract
PURPOSE: This research evaluates the clinical efficacy of orthognathic surgery as a therapeutic intervention for moderate-to-severe OSA. METHODS: This prospective research included 40 patients diagnosed with OSA through polysomnography. Patients underwent "maxillomandibular advancement (MMA)" surgery, and outcomes were assessed using polysomnographic parameters, "Epworth Sleepiness Scale (ESS)," and patient satisfaction over a 12-month follow-up. RESULTS: Postoperative analysis revealed significant reductions in "apnea-hypopnea index (AHI)" and ESS scores. The mean AHI decreased from 35.2 ± 5.8 events/hour preoperatively to 8.4 ± 3.2 events/hour postoperatively (P < 0.001). Patient-reported satisfaction was high, with 85% rating outcomes as excellent. CONCLUSIONS: Orthognathic surgery, particularly MMA, demonstrates a substantial improvement in OSA severity and quality of life, supporting its role as a definitive treatment modality.