Abstract
Objective: Evaluate fluoride concentration in 500ml commercial brands of bottled water and compare it to the amount printed on the label. Methods: A descriptive, cross-sectional epidemiological study was conducted. Samples of nine different commercial brands of 500ml bottled water were collected at authorized distribution points in the city of Fortaleza, CE, Brazil, in 2013. Fluoride concentration was determined in duplicate using a fluoride ion-selective electrode. The results were obtained from linear regression of the calibration curve. Results: Fluoride concentrations ranged between 0.07 and 0.63 ppm F- or mg F/L. There were significant differences between the values printed on the labels and those found in the analysis. The fluoride concentration levels determined were not in compliance with the recommended levels by the National Health Surveillance Agency. Conclusions: The results obtained confirm the need for more careful monitoring of fluoride levels in bottled water and closer sanitary inspections.
Highlights
In the last decades of the 20th century, the use of fluoride have exerted great impact on the control of dental caries even though, technically, its use alone does not prevent cavities but rather controls the rate at which they develop
There were significant differences between the values printed on the labels and those found in the analysis
The results obtained confirm the need for more careful monitoring of fluoride levels in bottled water and closer sanitary inspections
Summary
In the last decades of the 20th century, the use of fluoride have exerted great impact on the control of dental caries even though, technically, its use alone does not prevent cavities but rather controls the rate at which they develop. 461-466, out./dez., 2015 exposure does not provide adequate protection against dental caries, and multiple sources of fluoride exposure are associated to greater chance for developing dental fluorosis. The safe and adequate intake of fluoride is recommended, especially in the form of fluoridated water from public water supply and bottled mineral water[1,2,3]. The consumption of bottled mineral water in Brazil has grown continuously, especially in the Southeast and Northeast regions, with an increasing number of bottled water brands available in the market. In general, believe that this source of water has fewer impurities, and there is reduced risk of contamination with pathogens that cause waterborne diseases; it is supposedly healthier and more suitable for daily intake, especially for children[1,5,6,7,8,9]
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