成人安氏Ⅱ类2分类错(牙合)非拔牙矫治9例疗效分析
성인안씨Ⅱ류2분류착(아합)비발아교치9례료효분석
Nonextraction treatment for Class Ⅱ Division 2 malocclusion in adults: analysis of therapeutic effect in 9 patients
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