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ISW (Improved Super-Elastic Ti-Ni Alloy Wire) for Non-extraction Treatment of Adult Case with Linguoversion of Bilateral Lower Second Premolars

使用ISW(improved super-elastic Ti-Ni alloy wire)不拔牙治療成人下顎雙側第二小臼齒完全舌側偏移之病例

摘要


一位20歲成年男性因下顎後牙擁擠而來求診。臨床檢查發現下顎前牙有輕微齒間空隙及雙側第二小臼齒完全舌側偏移。由於病人不願接受拔牙治療,因此使用改良型鎳-鈦合金線(ISW)進行牙齒平整化來紓解下顎牙弓擁擠。藉由crimpable stopper及open coil spring進行牙齒遠心移動以創造足夠空間,同時在下顎後牙以ISW MEAW進行錨定的加強。同時藉由open coil spring及elastic chain改正左下第二小臼齒之旋轉。治療在11個月內完成且達成一個穩定咬合。

並列摘要


Summary: An adult male (20 years old) came to our clinic with a chief complaint of lower posterior crowding. Clinical examination found mild spacing over the lower anterior teeth and lingually blocked-in lower second premolars. Because the patient didn’t want to receive extraction treatment, ISW (improved superelastic Ti-Ni alloy wire) leveling was performed to relieve lower arch crowding. Sufficient space was created by distalization with open coil spring and crimpable stopper. With ISW MEAW-like wire as reinforced anchorage over the lower arch, a satisfactory result was obtained. Meanwhile, lower left second premolar was derotated with open coil spring and elastic chain. Treatment was completed within 11 months and a stable occlusion was achieved after the active treatment.

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