用Herbst矫正器治疗安氏Ⅱ类错的研究

The study on treatment of Chinese children's class Ⅱ malocclusion by Herbst appliance

目的对Ｈｅｒｂｓｔ矫正器治疗中国儿童安氏Ⅱ类错的效果进行观察。方法应用Ｈｅｒｂｓｔ矫正器对３０名１０～１３岁安氏Ⅱ类错患者进行治疗，以Ｘ线头影测量分析方法评价疗效。结果Ｈｅｒｂｓｔ矫正器可产生抑制上颌生长，刺激下颌生长的效果；同时也引起上切牙舌倾，下切牙唇倾及下磨牙近中向移动。结论Ｈｅｒｂｓｔ矫正器用于治疗中国儿童的安氏Ⅱ类错，可产生显著的生长改良作用。

Objective To study the effects of early treatment for chinese children with class Ⅱ malocclusion. Methods 30 chinese children were treated by Herbst appliance. The cephalometric analysis were used to evaluate the effects of early treatment. Results Herbst appliance can restrict the growth of maxilla and stimulate the growth of mandible, at the same time, the appliance leads to the retroclining of upper incisors, proclining of lower incisors and mesial movement of lower molars.Conclusion Herbst appliance can achieve remarkable effects of growth modification for chinese children's class Ⅱ malocclusion.