无托槽隐形矫治的支抗控制及临床策略

Clear aligner therapy:anchorage management and clinical strategies

透明矫治器包裹整个牙列,被认为能提供更好的组牙支抗,即除拟移动的牙齿,牙列内剩余牙齿整体作为支抗。然而实际移动牙齿时不期望发生移动的支抗牙也可产生移动,提示无托槽隐形矫治同样需要关注支抗问题。本文就无托槽隐形矫治中支抗控制问题进行阐述,对比固定矫治与无托槽隐形矫治支抗的区别,并从垂直向、矢状向和横向3个方面探讨支抗设计的临床策略,以期为正畸临床提供参考。

Clear aligner,covering the whole dentition,is considered to offer more stable anchorage units,which means the whole dentition would act as a strong anchorage except the teeth designed to move.Although we don′t expect any movement of the anchorage teeth,it actually happens.It reminds us to pay attention to anchorage problems.In this article we have discussed the anchorage design in clear aligner therapy,compared clear aligner with traditional fixed appliance on anchorage control and provided some clinical strategies of anchorage design in vertical,sagittal and transverse tooth movement.