Abstract: Objective    To analyze sleep disordered breathing（SDB）in children and adolescents with orthodontic treatment based on a questionnaire. Methods    A total of 348 Han children and adolescents with orthodontic treatment who visited the Dental and Maxillofacial Development Management Center of the Stomatological Hospital of Xi'an Jiaotong University from January to July 2021 were selected，and whether they had snoring，apnea，lethargy，behavioral disorders and other problems were investigated through questionnaires. The patients with an average questionnaire score ≥ 8 points were recorded as the SDB high-risk group，and those with a score < 8 points were recorded as the SDB low-risk group. The age and gender distribution of the two groups of patients was analyzed. Results    There were 33 patients with an average score ≥ 8，accounting for 9.48%. In the questionnaire，127（36.49%）and 119（34.20%）of the patients answered "yes" to the questions "feel dry mouth after waking up in the morning" and "easy to be distracted by external stimuli"，the rate being relatively high. There was no significant difference in the age or gender distribution between the SDB high-risk group and the SDB low-risk group（all P > 0.05）. Conclusion    Among orthodontic children and adolescents，the high risk of SDB is close to 10%，which should be paid attention to by parents and orthodontists，and they should be intervened as soon as possible.

Key words: orthodontic treatment, malocclusion in children and adolescents, sleep disordered breathing

摘要： 目的    基于问卷调查分析儿童和青少年正畸患者睡眠呼吸障碍（sleep disordered breathing，SDB）情况。方法    选取2021年1—7月于西安交通大学口腔医院牙颌颜面发育管理中心就诊的汉族儿童和青少年正畸患者348例，通过问卷调查其是否有打鼾、呼吸暂停、嗜睡、行为障碍等问题。问卷平均得分≥ 8分的患者记为SDB高风险组，得分< 8分的记为SDB低风险组，分析两组患者年龄、性别的分布情况。结果    问卷平均得分≥ 8分的患者有33例，占9.48%。问卷中“早上醒来后感到口干”和“容易受外界刺激的影响而分心”回答为“是”的患者分别为127例（36.49%）和119例（34.20%），占比较高。SDB高风险组与SDB低风险组患者年龄和性别的分布差异均无统计学意义（均P > 0.05）。结论    在儿童和青少年正畸患者中，SDB高风险患者接近10%，需要引起家属及正畸医生的关注，并应尽早进行干预治疗。

关键词: 正畸治疗, 儿童和青少年错牙合畸形, 睡眠呼吸障碍