乳牙黑色素附着与患龋状况关系的分析

THE ANALYSIS OF RELATIONSHIP BETWEEN BLACK STAINS AND CARIES IN THE DECIDUOUS DENTITION

目的观察乳牙黑色素附着与患龋状况的关系。方法对上海医科大学附属幼儿园５３４名２６岁幼儿进行检查，将其中７２名（１３４％）牙冠表面有黑色素附着者作为有色素组，其余为无色素组，分析比较两组的患龋状况。结果各年龄组黑色素附着之发生率为：２岁６２％，３岁１４４％，４岁１１４％，５岁１８２％，６岁３７％。有色素组与无色素组的患龋率、ｄｆｔ、ｄｆｓ、ｄｔ，除５岁年龄组外，其余各年龄组差异均无显著性（Ｐ＞０．０５）．结论龋病是一种多因素疾病，关于牙色素是龋蚀的抑制因子，需进一步考证。

Purpose To investigate the relationship of the black stains and caries in the deciduous dentition.Methods Frequencies of black stains and degrees of caries in the deciduous dentition of 534 children, aged 2￣6 years in the kindergarten of Shanghai Medical University were examined. Subjects were divided into 2 groups: children with stained teeth and children with no stained teeth. Results Black stain deposits were found on the deciduous teeth of 13.4% of children. Percentages of children with black stain deposits in age groups were as follows: 2 year olds, 6.2%; 3 year olds, 14.4%; 4 year olds, 11.4%;5 year olds, 18.2% and 6 year olds, 3.7%; There were no significant differences of caries incidence, dft, dfs and dft between 2 groups. The only difference was found in the 5 year olds (P<0.05).[WT5”HZ]Conclusion Dental caries is mutiple factor disease. The relationship between black stains and caries should be more proved.