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目的 探讨持续气道正压通气(CPAP)与口腔矫治器(0A)治疗阻塞性睡眠呼吸暂停低通气综合征(OSAHS)患者(牙合)关系变化情况.方法 患有OSAHS患者47例,随机分为两组:A组CPAP治疗21例,B组OA治疗26例,观察记录其治疗前、治疗1年后全口石膏模型上的(牙合)关系相关变量.结果 两治疗组在治疗1年后发现,其后牙区咬合接触点数量比治疗前存在减少,差异有显著性(P＜0.05).OA组与CPAP组比较,覆(牙合)(-1.4±1.1)mm、覆盖(-1.1±O.9)mm及下颌前移(-1.2±1.6)mm明显减小,差异有显著性(P＜0.05).结论 CPAP与OA治疗OSAHS都可能导致殆关系变化,而应用口腔矫治器治疗时(牙合)关系变化更加显著.“,”Objective To investigate the change of occlusal relationship associated with continuous positive airway pressure (CPAP)and oral appliance (OA)in patients with obstructive sleep apnea hypopnea syndrome.Methed Having suffering from obstructive sleep apnea hypopnea syndrome,47 patients were randomly divided into two groups.Group A consisted of 21 patients to CPAP therapy.Group B was of 26 patients while to OA therapy.Before therapy and after one year follow-up,dental plaster study models in full occlusion were obtained which were analyzed with occlusal relationship relevant variables.Result Both groups showed a significant decrease in number of occlusal contact points in the posterior teeth region (P＜0.05).However,in group B overbite、overjet and anterior-posterior change decreased (-1.4 ± 1.1) mm、(-1.1 ±0.9) mm and (-1.2 ± 1.6) mm (P＜0.05).Conclusion Both CPAP and OA lead to some change in occlusal relationship.The change of occlusal relationship by OA therapy in OSAHS were more significantly.