Treatment of class Ⅱ division 1 malocclusion in the patients with high or without high mandibular angle by functional appliances in combination with activator headgear / 实用口腔医学杂志

ABSTRACT

砄bjective To study the effects of functinal appliances combined with activator headgear in the treatment of Class II division 1 malocclusion with or without high mandibular angle. Methods: 5 cases (10～12 years old) of class Ⅱ division 1 malocclusion with high mandibular angle (FMA≥34?,HMA) and 8 cases (9～12 years old) without the high angle (FMA