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:探下颌恒切先天缺失情况,与颌畸形及下尖近远中径变化。
Objective:To investigate the relationship among the congenital hypodontia of mandibular incisor and malocclusion and the variation of medial distal dimension of mandibular canine.
目:探下颌恒切先天缺失情况,与颌畸形及下尖近远中径变化。
The rate of malocclusion in normal students was 62. 3%, ankyloglossia 6. 6% , and abnormity labial frenum 4. 8%.
健康组错畸形患病率62.3%,舌带过短率6.6%,唇带异常率4.8%。
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