Silva Josiene Saibrosa da, Moreno Wallesk Gomes, Forte Franklin Delano Soares, Sampaio Fábio Correia
Programa de Pós Graduação em Odontologia, UFPB, Campus I Cidade Universitária, 58051-900 João Pessoa PB.
Cien Saude Colet. 2009 Nov-Dec;14(6):2215-20. doi: 10.1590/s1413-81232009000600030.
The aim of this work was to determine the natural fluoride concentrations in public water supplies in Piauí State, Brazil, in order to identify cities in risk for high prevalence of dental fluorosis. For each city, two samples of drinking water were collected in the urban area: one from the main public water supply and another from a public or residential tap from the same source. Fluoride analyses were carried out in duplicate using a specific ion electrode and TISAB II. From a total of 222 cities in Piauí, 164 (73.8%) samples were analyzed. Urban population in these towns corresponds to 92.5% of the whole state with an estimated population of 1,654,563 inhabitants from the total urban population (1,788,590 inhabitants). A total of 151 cities showed low fluoride levels (<0.30 mg/L) and 13 were just below optimum fluoride concentration in the drinking water (0.31-0.59 mg/L). High natural fluoride concentration above 0.81 mg/L was not observed in any of the surveyed cities. As a conclusion, most of the cities in Piauí have low fluoride concentration in the drinking water. The risk for a high prevalence of dental fluorosis in these urban areas due to natural fluoride in the water supplies is very unlikely. Thus, surveys about the dental fluorosis prevalence in Piauí should be related with data about the consumption of fluoridated dentifrices and other fluoride sources.
这项工作的目的是测定巴西皮奥伊州公共供水系统中的天然氟化物浓度，以便识别氟斑牙高患病率风险城市。对于每个城市，在市区采集两份饮用水样本：一份来自主要公共供水系统，另一份来自同一水源的公共或住宅水龙头。使用特定离子电极和TISAB II对氟化物进行双份分析。在皮奥伊州总共222个城市中，分析了164个（73.8%）样本。这些城镇的城市人口占全州的92.5%，全州城市总人口估计为1,788,590居民，其中1,654,563居民来自这些城镇。共有151个城市的氟化物水平较低（<0.30 mg/L），13个城市的氟化物浓度略低于饮用水的最佳浓度（0.31 - 0.59 mg/L）。在任何被调查城市中均未观察到天然氟化物浓度高于0.81 mg/L的情况。结论是，皮奥伊州的大多数城市饮用水中的氟化物浓度较低。由于供水系统中的天然氟化物，这些城市地区氟斑牙高患病率的风险非常低。因此，皮奥伊州关于氟斑牙患病率的调查应与有关含氟牙膏和其他氟源消费的数据相关。
