铸造Nance弓在拔牙后上尖牙自由调整病例中的应用

秦飞，马晓晴，徐培成，项飞

Casting Nance arch which allowed the upper canine's self-adjustment in the extraction cases

QIN Fei, MA Xiao-qing, XU Pei-cheng, XIANG Fei

上海口腔医学 . 2016, (2): 231 -234 .