乳牙釉质发育缺陷临床特点的研究

目的　探讨低出生体重儿和早产儿乳牙釉质发育缺陷的临床特点及其发生机制。方法　选择 1 76名低出生体重儿和早产儿 ,检查乳牙釉质发育缺陷的状况 ,结合出生前、出生时及出生后的病史 ,研究釉质发育缺陷的临床特点及其发生机制。结果　低出生体重儿和早产儿乳牙釉质发育缺陷的患病率为 77 3% ,其患病率男女性别间无显著性差异。乳牙釉质混浊好发于上下第二乳磨牙 ,而乳牙釉质发育不全好发于上下乳切牙和上第一乳磨牙 ,且无论是乳牙釉质混浊还是发育不全 ,基本是对称发生。结论　乳牙釉质发育缺陷主要是由出生时及出生后 1年内全身状况的紊乱所致.

The Study on the Clinical Manifestation of Developmental Enamel Defects in Primary Dentition

OBJECTIVE: To study the clinical manifestation and its pathogenesis of the developmental enamel defects in primary dentition of children with low birth weight and premature birth history. METHODS: One hundred and seventy-six children (aged 3-8 years old) were studied about the clinical manifestation of the developmental enamel defects in the primary dentition and its relationship with their medical history. RESULTS: The prevalence of enamel defects in primary dentition in these children was 77.3%. There was no significant correlation between enamel defects and gender. Enamel opacity mostly affected the upper and lower second primary molars. Enamel hypoplasia mostly affected the maxillary and mandibular primary incisors and the maxillary first primary molars. CONCLUSION: Enamel defects mainly result from children's general disorder at birth or within one year after birth.