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

这项研究是NIDR在#年进行的先前研究的后续 伊利诺伊州在1980年和1985年以及1982年在爱荷华州评估了 接尘学龄儿童氟斑牙和龋病调查 他们的饮用水中的氟化物浓度不同。两人都是伊利诺伊州 调查是在相同的社区进行的，这自然地 他们的供水中出现的氟化物浓度为 大约是建议的一倍、两倍、三倍和四倍 对于那些地区。相比之下，爱荷华州的社区几乎可以忽略不计 他们饮用水中的氟化物浓度。 有必要监测牙病患病率的可能变化 氟中毒继续受到高度重视。其他研究还包括 需要进一步阐明和定义当前 龋齿、氟斑牙和不同浓度的氟化物 喝水。中相同社区的持续可用性 伊利诺伊州和内布拉斯加州两个社区的识别 微不足道的水基氟化物浓度已经提供了 这是满足这些研究需求的绝佳机会。考试是 今年4月完成了对大约300名7岁学童的调查 在内布拉斯加州的两个社区从16岁到16岁。每个孩子都接受了检查 使用DMFS指数的龋齿和使用两者的氟斑牙 氟斑牙的Dean‘s指数和牙面指数收集到的数据 正在为统计分析做准备。考试，使用相同的 指数，定于今年10月在伊利诺伊州举行。

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 this past April 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. The data collected are being prepared for statistical analysis. Examinations, using the same indices, are scheduled for this coming October in Illinois.