应用Van-Beek Activator矫治安氏Ⅱ类Ⅰ分类错(牙合)畸形
응용Van-Beek Activator교치안씨Ⅱ류Ⅰ분류착(아합)기형
Treatment Effects of Van-Beek Activator in Correction of Angle Class Ⅱ Division Ⅰ Malocclusion
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