hypodontia

1.Objective:To investigate the relationship among the congenital hypodontia of mandibular incisor and malocclusion and the variation of medial distal dimension of mandibular canine.

目的:探讨下颌恒切先天缺失情况,与颌畸形的关系以及下远中径的变化。

2.So this fetus presented seeral signs of trisomy 21, including the hypoplasia of the nasal bone, hypodontia, micrognathia, and hypospadias.

这样，本例胎显示21三体的若干征象：包括育不全、育不全、小颌和尿道下裂。