Cura N, Saraç M
Department of Orthodontics, Faculty of Dentistry, University of Istanbul, Türkiye.
Eur J Orthod. 1997 Dec;19(6):691-702. doi: 10.1093/ejo/19.6.691.
The purpose of this investigation was to study the short-term effects of treatment with the Bass appliance by comparative evaluation of treated and untreated skeletal Class II malocclusions. The subjects consisted of forty-seven Class II, division 1 malocclusion cases. Twenty-seven (14 girls, 13 boys) were treated with the Bass appliance for an average of 6 months. The remaining 20 cases (6 girls, 14 boys) served as a control. At the end of the 6 month treatment period the statistically significant treatment changes could be summarized as follows: the sagittal skeletal relationship was improved as a result of favourable growth responses in both the maxilla and the mandible. The overjet was reduced and the molar relationship was corrected as a result of the extended skeletal changes. Distal movement of the upper dentition was evident, with unchanged inclination of the maxillary incisors. Both anterior and posterior facial heights were increased without changes in the inclinations of the palatal and mandibular planes. No significant dental movement was observed in the mandible.
本研究的目的是通过对经治疗和未经治疗的骨性安氏II类错牙合进行比较评估，来研究使用Bass矫治器治疗的短期效果。研究对象包括47例安氏II类1分类错牙合病例。其中27例（14名女孩，13名男孩）使用Bass矫治器进行治疗，平均治疗时间为6个月。其余20例（6名女孩，14名男孩）作为对照。在6个月的治疗期结束时，具有统计学意义的治疗变化可总结如下：由于上颌骨和下颌骨均出现有利的生长反应，矢状面骨骼关系得到改善。由于骨骼变化的扩展，覆盖减小，磨牙关系得到矫正。上颌牙列明显远中移动，而上颌切牙的倾斜度未改变。前后面部高度均增加，腭平面和下颌平面的倾斜度未改变。下颌未观察到明显的牙齿移动。
