Anchorage loss measured at the first premolar averaged 1.3 mm,but the crowns tipped 3.5? distally.
5、每侧第一前磨牙的支抗丧失平均为1.3mm并伴3.5“的牙冠远中倾斜，这一结果不同于其它口内磨牙远移装置所造成的前磨牙牙冠近中倾斜，与国外对同类矫治器的观察结果相似。
参考来源 - 舌侧磨牙远移器矫治安氏Ⅱ类错（牙合）的临床研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Objective the aim of this study was to investigate the root canal system of maxillary first premolar .
目的观察离体上颌第一前磨牙根管解剖结构。
Objective To construct the fine 3d model of the maxillary first premolar for finite element analyzes (FEA).
目的建立上颌第一前磨牙的精细三维模型，并最终应用于有限元分析(FEA)。
Objective:To compare the changes in third molar position in patients treated with second molar and first premolar extractions.
目的：比较正畸治疗中拔除第二磨牙与拔除第一前磨牙后第三磨牙牙胚位置的不同改变。
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