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上颌发育不足的Ⅲ类错(牙合)早期用上颌前牵引矫正 疗效明显。Ⅲ类错(牙合)上颌牙弓宽度不足,往往要进行扩弓治疗。本研究评价了用面框前牵引上颌同时慢速扩弓治疗Ⅲ类错(牙合)儿童的治疗反应及远期疗效。 作者对22名前牙反(牙合)伴上颌发育不足的儿童(9男13女)进行研究,平均年龄9岁10个月。治疗时间为9个月。并选出年龄、性别相当的22名发育正常的儿童作为对照。在以下三个时期拍摄头侧位X片:T_1(治疗开始前),T_2(面框前牵引治疗结束时);T_3(治疗结束后1年5个月)。
Maxillary hypoplasia Ⅲ class malocclusion early maxillary anterior traction correction effect is obvious. Ⅲ class malocclusion (occlusion) maxillary dental arch width is insufficient, often to expand the bowel treatment. This study evaluated the treatment response and long-term efficacy of class Ⅲ malocclusion in children with maxillary and slow expansion before the face frame. The authors studied 22 anterior crossbite patients with maxillary hypoplasia (9 males and 13 females), mean age 9 years and 10 months. The treatment time is 9 months. Twenty-two healthy children of the same age and sex were selected as controls. In the following three periods of filming the first X-ray film: T_1 (before the start of treatment), T_2 (face frame before the end of traction treatment); T_3 (1 year and 5 months after the end of treatment).