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采用多带环固定矫正器有效地矫治伴有上颌前突的Ⅱ类错(牙合)已有多年,然而却存在Ⅱ类错(牙合)虽已矫正,但上唇由于上切牙的内收而产生退缩的问题;Fr(?)nkel(1969和1974)曾提出:功能矫正器对面肌的平衡有一个明显的肌功能作用。本文就是用 Fr(?)nkel 矫正器和方丝弓矫治器矫治Ⅱ类错(牙合)病人,比较观查上切牙和上唇的相应变化。材料方法:研究组为50例Ⅱ类1分类错(牙合)病人,男26名,女24名,用 Fr(?)nkel 矫正器矫治,前牙覆盖为7.5±2.0毫米,患者均不采用减数矫治。对照组为50例Ⅱ类错(牙合)病人,男女各
It has been used for many years to correct Class Ⅱ malocclusion associated with maxillary protrusion, however, Class Ⅱ malocclusion has been corrected. However, the upper lip due to the adduction of the upper incisor Which caused the problem of withdrawal; Fr (?) Nkel (1969 and 1974) proposed that the functional orthosis has a distinct muscle function effect on the balance of the facial muscles. This article is to use Fr (?) Nkel orthosis and square wire appliance orthodontic treatment of class Ⅱ malocclusion patients, compared to check the corresponding changes in incisors and upper lip. Materials and Methods: The study group consisted of 50 patients with Class Ⅱclass 1 malocclusion, 26 males and 24 females. The patients were treated with Fr (?) Nkel orthosis and the anterior teeth covered 7.5 ± 2.0 mm without using Minute correction. The control group was 50 cases of type II malocclusion patients, both men and women