加快牙齿移动,取得又快又好的疗效是正畸学家们的愿望,尤其在牙齿扭转方面,更有着重要0床意义。近10年来,有关加快牙齿移动方面的研究非常活跃,有的已趋成熟,并用于临床病例。但是把某些药物,如PGE_2和胶原酶注射到局部,促进加快扭转牙转动,国内外均未见报道。本实验目的,就是 To speed up the tooth movement, to achieve fast and good curative effect is the aspiration of orthodontists, especially in terms of tooth torsion, more important 0 bed significance. In the past 10 years, research on accelerating tooth movement has been very active, and some have become mature and used in clinical cases. However, some drugs such as PGE 2 and collagenase are injected locally to accelerate the rotation of the twisting tooth, and no reports have been reported at home and abroad. The purpose of this experiment is