ABO Class II Tx with U1 Ankylosis｜【Chris Chang Ortho】CC769

[case report] This report describes the treatment of CII malocclusion with an ankylosed U1. It started out as a typical CII treatment using self-ligation system, IZC and power chains to retract the anteriors. However, little progress was observed after 26 months in treatment. After further examination, it’s suspected U1 was ankylosed. Anterior segmental osteotomy was performed. After 68 months of treatment, ideal occlusion was achieved. 這篇報告記錄了一個CII咬合不正的案例，因為U1 ankylosis導致治療進度在26個月後遲滯不前，檢查後發現問題，即進行Anterior segmental osteotomy手術。歷經68個月的治療後達到理想的治療成果。