论文部分内容阅读
颏兜治疗已经广泛利用并普遍认为是一种矫治尚在发育的下颌前突错(牙合)的有效方法.最近20年来,报道颏兜治疗有如下矫治作用①改变下颌的生长方向②下颌向后重新定位③阻滞下颌的生长发育④下颌的改建. 材料和方法样本由63名在治疗前具有Ⅲ类骨性错(牙合)的日本女孩组成,所有患者均用颏兜矫治。样本根据矫治开始的年龄分为三组①从7岁开始治疗组23人,②从9岁开始治疗组20人,③从11岁开始治疗组
Chin chin treatment has been widely used and generally considered to be an effective method of correction of still developing mandibular protrusion occlusion.In recent 20 years, reported Chin chin treatment has the following correction ① change the mandibular growth direction ② mandibular And then repositioned ③ retarding the growth and development of the mandible ④ reconstruction of the mandible.Materials and Methods The sample consisted of 63 Japanese girls with type Ⅲ bony malocclusion before treatment and all were treated with chinchip. The samples were divided into three groups according to the age at the beginning of the treatment: ① from the age of 7, 23 in the treatment group, ② from the age of 9 to 20 in the treatment group, and ③ from the age of 11 in the treatment group