Objective:To investigate the relationship among the congenital hypodontia of mandibular incisor and malocclusion and the variation of medial distal dimension of mandibular canine.
探讨
颌恒切牙先天缺失情况,与牙颌畸形的关系
尖牙近远中径的变化。
Objective:To investigate the relationship among the congenital hypodontia of mandibular incisor and malocclusion and the variation of medial distal dimension of mandibular canine.
探讨颌恒切牙先天缺失情况,与牙颌畸形的关系尖牙近远中径的变化。
明：
上例句、词性分类
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