3种功能矫治器矫治骨性Ⅱ类错(牙合)的临床疗效对比研究
3충공능교치기교치골성Ⅱ류착(아합)적림상료효대비연구
Comparative study of the clinical effects of three different functional appliances on the treatment of skeletal Class Ⅱ malocclusion
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