Department of Child and Social Dentistry, Araçatuba Dental School, Univ Estadual Paulista, Araçatuba, SP, Brazil.
Braz Oral Res. 2012 Jan-Feb;26(1):12-8. doi: 10.1590/s1806-83242012000100003.
The fluoridation of public water supplies is considered the most efficient public health measure for dental caries prevention. However, fluoride levels in the public water supply must be kept constant and adequate for the population to gain preventive benefit. The aim of this study was to analyze fluoride levels in the public water supply of 29 Brazilian municipalities during a 48-month period from November 2004 to October 2008. Three collection sites were defined for each source of municipal public water supply. Water samples were collected monthly and analyzed at the Research Laboratory of the Nucleus for Public Health (NEPESCO), Public Health Postgraduate Program, Araçatuba Dental School (UNESP). Of the 6862 samples analyzed, the fluoride levels of 53.5% (n = 3671) were within the recommended parameters, those of 30.4% (n = 2084) were below these parameters, and those of 16.1% (n = 1107) were above recommended values. Samples from the same collection site showed temporal variability in fluoride levels. Variation was also observed among samples from collection sites with different sources within the same municipality. Although 53.5% of the samples contained the recommended fluoride levels, these findings reinforce the importance of monitoring to minimize the risk of dental fluorosis and to achieve the maximum benefit in the prevention of dental caries.
公共供水氟化被认为是预防龋齿最有效的公共卫生措施。然而，公共供水的氟化物水平必须保持恒定且足够，以使人群获得预防益处。本研究的目的是分析 2004 年 11 月至 2008 年 10 月期间 29 个巴西城市公共供水的氟化物水平。为每个城市公共供水源定义了三个采集点。每月采集水样，并在 Araçatuba 牙科学校（UNESP）公共卫生研究生课程的公共卫生核研究实验室（NEPESCO）进行分析。在分析的 6862 个样本中，53.5%（n=3671）的氟化物水平在推荐参数范围内，30.4%（n=2084）的氟化物水平低于这些参数，16.1%（n=1107）的氟化物水平高于推荐值。来自同一采集点的样本显示氟化物水平具有时间变异性。同一城市不同来源的采集点之间的样本也存在差异。尽管 53.5%的样本含有推荐的氟化物水平，但这些发现强调了监测的重要性，以最大程度地降低氟斑牙的风险并实现预防龋齿的最大益处。
