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| 下間サマーミーティング ･テーマ 「L.A.S.治療中に反省した点」 ･１：レベルアンカレッジシステムの症例報告 ･２：イカン？遺憾？医・患コミュニケーションの一考 ２：Step by step Procedures ･Step-1:Expand and Stabilize upper arch ･Step-2:Level lower arch (Extract/44) ･Step-3:Retract lower Canines ･Step-4:Upright of lower anteriors ･Step-5:Stabilize lower arch ･Step-6:Retract upper anteriors ･Step-7:Detailing and Finishing ◆Step 1：Expand upper arch
◆Step１〜２ Stabilize of the upper arch ･（Anchorage for the class III elastics and Point A anchorage）
･Level lower arch and anchorage preparation ･（Anchorage for the canine retraction and class II elastics ）
◆Step-3 Lower canine retraction ･（Correction of crowding and maintain a space necessary for upright of lower anterior） ･Checkof the curve of Spee,and tip back bend.
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