安氏Ⅱ类Ⅰ分类错(牙合)上颌快速扩弓非拔牙矫治前后的软组织变化
안씨Ⅱ류Ⅰ분류착(아합)상합쾌속확궁비발아교치전후적연조직변화
Soft tissue changes in adolescents with Class Ⅱ Division Ⅰ malocclusion treated by rapid maxillary expansion without tooth extraction
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