[The study on treatment of Chinese children's Class II malocclusion by Herbst appliance].

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.