Fluoretação das águas de abastecimento público no município de Araçatuba/SP

Fundação de Amparo a Pesquisa do Estado de São Paulo (FAPESP)

Concentração de flúor em águas envasadas: análise laboratorial e da legislação relacionada

Fluoridation of water for human consumption is a method of caries prevention that brings great social benefit, if kept at optimal levels. The increase in the production of bottled water emphasizes the need to verify whether fluoride presence in these waters occurs in sufficient quantity to prevent decay, or if it represents a significant risk of fluorosis. Objective: to compare the concentrations of fluoride present in bottled water to those declared on the labels, and to make a critical analysis of legal norms on the subject. Materials and method: this was a cross-sectional study, through which 22 samples of bottled water sold in state of Ceará, Brazil, were analyzed. Analyses were performed in duplicate by the electrometric method, and results were compared to those printed on the labels. Detailed searches by laws, resolutions, ordinances, and other official documents in force, related to the topic were performed. Results: the fluoride concentrations found ranged from 0.01 to 0.36 mgF/l. Although 72.7% of the samples were classified as fluoridated, the fluoride concentrations observed were shown to be insufficient for caries prevention. As for the rules, situations where they are not clear or even divergent were found. Conclusion: the current legislation on the subject requires updates to become more objective and to create new criteria on the use of the term “fluoridated water”.

Estudo comparativo de diferentes metodologias analíticas para a determinação de fluoreto

The problem of dental caries in Brazil and around the world took major considerably over the years. In recent decades, with the advent of fluoridation, this problem has been alleviated. Studies have shown, however, that the lack of control in fluoridation leads to several health of the population. The strict control of fluoride levels in the water distributed, therefore, is essential. The objective of this study is to gather information on the status of fluoridation in some area of Brazil and compare different methods for the quantification of that analyte