So this fetus presented seeral signs of trisomy 21, including the hypoplasia of the nasal bone, hypodontia, micrognathia, and hypospadias.
这样，本例胎儿显示21三体的若干征象：包括鼻骨
全、牙全、小颌和尿道
裂。
全So this fetus presented seeral signs of trisomy 21, including the hypoplasia of the nasal bone, hypodontia, micrognathia, and hypospadias.
这样，本例胎儿显示21三体的若干征象：包括鼻骨全、牙全、小颌和尿道裂。
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
切牙先天缺失情况,与牙颌畸形的关系以
牙近远中径的变化。
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