The structural changes of upper airway and newly developed sleep breathing disorders after surgical treatment in class III malocclusion subjects

摘要: Bimaxillary surgery is the traditional treatment of choice for correcting class III malocclusion which reported to cause an alteration oropharyngeal structures and upper airway narrowing that might be a predisposing factor obstructive sleep apnea (OSA). This study aimed analyze parameters in subjects ascertain prevalence snoring or OSA following bimaxillary surgery. A total 22 patients with Le Fort I osteotomy mandibular setback were prospectively enrolled. All received endoscopic examination, cephalometry, 3-dimensional computed tomography (3D-CT), twice at 1 month before 3 months after surgery. The patient population consisted 5 males 17 females mean body mass index 22.5 kg/m2 age 22.1 years. No complained sleep-related symptoms, results showed normal values surgery. Three (13%) newly diagnosed mild moderate 6 (27%) increased loudness (over 40 dB) According cephalometric analysis 3D-CT results, retropalatal retroglossal areas significantly narrowed patients, showing In addition, volume was considerably reduced same patients. Postoperative reduction can induced, causes