改良Nance弓配合上颌前方牵引矫治骨性Ⅲ类错(牙合)的效果
개량Nance궁배합상합전방견인교치골성Ⅲ류착(아합)적효과
Combined modified Nance arch and maxillary protraction in correction of skeletal class Ⅲ malocclusion
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