微型种植体支抗及口外弓支抗矫治安氏Ⅱ类1分类错(牙合)畸形的比较研究
미형충식체지항급구외궁지항교치안씨Ⅱ류1분류착(아합)기형적비교연구
The comparative study of the treatment of Angle class Ⅱ division 1 malocclusion with micro-implant anchorage and headgear anchorage technique
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