"2×4"矫治器配合活动矫治器治疗替牙期反(牙合)及深覆(牙合)体会
"2×4"교치기배합활동교치기치료체아기반(아합)급심복(아합)체회
Study of malocclusion in mixed dentition treated by "2×4" appliance with removable appliance
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