本文报告68例非颌骨性的上下前牙牙槽性错(牙合)畸形的外科正畸手术。
Cases of orthognathic surgery on alveolar malocclusion of both maxillary and mandibular anterior teeth were re - ported.
目的根据具有趋骨性的化合物的共同特征，设计并合成苯并吡喃4酮类化合物，检测它们的趋骨性。
Aim to design and synthesize benzopyran-4-one derivatives according to the common structural properties of compounds which have bone affinity and test their bone affinity.
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