PREVALENCE OF DENTAL CARIES AND DENTAL FLUOROSIS IN RELATION TO WATER FLUORIDE

这项研究是NIDR在2009年进行的先前研究的后续研究。 1980年和1985年在伊利诺斯州以及1982年在爱荷华州评估了 儿童氟斑牙和龋齿的发病率 不同浓度的氟化物。 两 伊利诺伊州的调查是在同一社区进行的， 天然存在的氟化物在他们的供水浓度 大约是建议的1、2、3和4倍， 最适合这些地区。 相比之下，爱荷华州的社区 他们的饮用水中的氟化物浓度可以忽略不计。 需要监测牙科患病率的可能变化 氟中毒继续受到高度重视。 额外的研究还 需要进一步阐明和界定当前的相互关系 龋齿、氟斑牙和各种浓度的 饮用水中的氟化物。 继续提供相同的 伊利诺伊州的两个社区， 内布拉斯加州的水中氟化物浓度可以忽略不计， 提供了一个很好的机会来满足这些研究需求。 1990年4月完成了对大约300名 内布拉斯加州两个社区7到16岁的学生。 使用DMFS指数检查每个儿童的龋齿， 使用Dean's指数和牙齿表面指数， 氟中毒。 使用相同的指数进行了检查， 1990年10月在伊利诺伊州。 所有研究中心的数据目前正在 分析了

This study is a follow-up of previous studies conducted by the NIDR in Illinois in 1980 and 1985 and in Iowa in 1982 to assess the prevalence of dental fluorosis and dental caries among schoolchildren exposed to different concentrations of fluoride in their drinking water. Both Illinois surveys were carried out in the same communities, which had naturally occurring fluorides in their water supplies at concentrations of approximately one, two, three and four times that recommended as optimal for those areas. In contrast, the Iowa communities had negligible concentrations of fluoride in their drinking water. The need to monitor for possible changes in the prevalence of dental fluorosis continues to receive high priority. Additional research also is needed to further elucidate and define current interrelationships between dental caries, dental fluorosis, and various concentrations of fluoride in drinking water. The continued availability of the same communities in Illinois and the identification of two communities in Nebraska with negligible concentrations of water-borne fluoride have afforded an excellent opportunity to address these research needs. Examinations were completed in April 1990 on approximately 300 schoolchildren ages seven through 16 in the two Nebraska communities. Each child was examined for dental caries using the DMFS index and for dental fluorosis using both Dean's Index and the Tooth Surface Index of Fluorosis. Examinations, using the same indices, were conducted in October 1990 in Illinois. Data from all study sites currently are being analyzed.