Impacted teeth treatment：simple way to activate 3D lever arm｜【Chris Chang Ortho】684

Activating a 3D lever arm is critical in the TADs-based impaction treatment. If the lever arm is connected to the impaction by power chains, you can activate it by tightening the PCs. If it’s connected by a ligature wire, you can bend the wire with a 3-jaw plier. 以骨釘為主的阻生齒治療中，啟用3D lever arm 是成功的關鍵。如果lever arm 是透過橡皮筋連接至阻生齒，那麼可以透過剪短圈數來收緊橡皮筋。如果是透過鋼線連接，則可利用3-jaw plier來彎曲線，達到收緊的目的。