自锁托槽与传统托槽不拔牙矫治软硬组织及牙弓变化的对比研究
자쇄탁조여전통탁조불발아교치연경조직급아궁변화적대비연구
Changes in dental arch and hard and soft tissue caused by the self-ligating bracket and conventional bracket with non-extraction treatment
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