【Chris Chang Ortho】566. Management of ankylosed molars
【Chris Chang Ortho】
Published at : 12 Jan 2021
This presentation features two impaction cases due to ankylosis. The first case has an unerupted, ankylosed lower first molar. After 3 times of surgical luxation and a traction force constituted by a buccal shelf miniscrew and 3D lever arm, the tooth was successfully extruded. The second case has an ankylosed deciduous 2nd molar that blocked the eruption of its successor. After extracting the ankylosed primary tooth and creating space by coil springs, the impacted permanent tooth automatically erupted.
本案例分析提出兩個因骨沾粘造成牙齒阻生的情況和對應的處理方式。案例一左下第一大臼齒因骨沾粘導致無法萌發。經過四次手術把牙齒搖鬆後，再以迷你螺絲合併3D Lever arm成功將這顆阻生齒拉至咬合面。另一案例是乳牙第二大臼齒骨沾黏，妨礙了恆牙第二小臼齒的萌發。只要及時把這顆粘黏的乳齒拔掉，利用彈簧騰出足夠空間，繼生恆牙即自行萌發。