一种新型尖牙牵引装置王学侠姬广国陈宝勇远中移动尖牙是矫治牙颌畸形中的一个重要步骤。后移尖牙有滑动法和关闭曲法［１］两种，滑动法因不需弯制关闭曲而常被采用。因尖牙牙根长而粗壮，具有较大的抵抗力，后移过程中很容易造成支抗丧失，引起不良后果。成功地后移尖牙... A new type of canine traction device Wang Xue-Xia Ji Guang-Guo Chen Bao-yong Moving fangs is an important step in orthodontics. There are two kinds of posterior fangs sliding method and closing song method [1], sliding method is often used because it is not necessary to bend the closing song. Due to canine root length and stout, with greater resistance, the process of posterior displacement is likely to cause loss of support, causing adverse consequences. Successfully move fangs ...