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目的通过研究下颌后缩患者使用双垫矫治器(Twin-block)前后上气道形态的变化情况,探讨Twin-block矫治器早期治疗及预防阻塞型睡眠呼吸暂停综合征(OSAHS)的作用和临床意义。方法选择33例处于青春生长迸发期或迸发期前1~2年的下颌后缩低角患者戴用Twin-block矫治器并使用螺旋CT对患者戴用矫治器前后的上气道扫描及三维重建。对上气道的特定层面的前后径及横径进行测量及统计学分析。结果所有患者上气道的前后径及横径在戴用Twin-block矫治器后均比戴用矫治器前有所增大。结论 Twin-block在有效促进下颌生长发育和改变下颌位置的同时,能扩大患者上气道的前后径及横径,改善患者的通气功能,对早期治疗及预防OSAHS有明显的效果。
Objective To investigate the effect of Twin-block appliance on the early treatment and prevention of obstructive sleep apnea syndrome (OSAHS) by studying the changes of upper airway morphology before and after using Twin-block in mandibular retrusion patients. Clinical significance. Methods Thirty-three patients with mandibular angle reduction who had been in the period of youth onset or one to two years before the onset of congenital myopathy were treated with Twin-block appliance and spiral CT before and after wearing orthodontic appliances. . The specific dimensions of the upper airway before and after the diameter and diameter measurements and statistical analysis. Results The anteroposterior diameter and transverse diameter of the upper airway of all patients increased after wearing Twin-block appliance before wearing the appliance. Conclusion Twin-block can effectively improve the growth and development of the mandible and change the mandibular position. It can also increase the anteroposterior diameter and transverse diameter of the upper airway and improve the ventilatory function of patients. It has a significant effect on the early treatment and prevention of OSAHS.