上颌磁力扩弓的动物实验研究

Maxillary Expansion with Magnetic Force: An Animal Experimental Study

选用雄性成年恒河猴２只，进行上颌磁力扩弓的研究，实验周期为７０ｄ，经猴上颌模型测量，咬合片及组织学切片观察。结果显示，两只猴子上颌牙弓明显扩大。

Two adult rhesus monkeys were chosen for the experimental study of maxillary expansion with magnetic force. The duration of experiment was 70 days. The following methods were applied: ①measuring the width between the two canines and the width between the two first molars on the casts, ②taking occlusal radiographs for the observation of premaxillary and midpalatal sutures. ③observing the histological sections under the microscope. The results showed the width of 3 to 3 and the width of 6 to 6 significantly increased, associating with the adaptation of periodontal tissues to the action of magnetic force.