Impacted Lower Premolar：Plan B｜【Chris Chang Ortho】CC802

[case report] This presentation features an alternative plan to upright a horizontal, transalveolar impaction. Instead of using buccal shelf screws and 3D lever arm, one can use open coil springs to create space and elastics to upright the impaction. 本篇報告分享了另外一種拉出卡在齒槽骨中間的水平阻生齒方式。除了一般使用buccal shelf screw和3D lever arm的方式拉出之外，還可以利用open coil springs撐開空間後，再利用橡皮筋把阻生齒拉至咬合面。