Abstract:The aim of the present study was monthly evaluation of fluoride levels in the public water supply in Pelotas, Rio Grande do Sul State, Brazil, and the validity of forming external control groups. Pelotas was divided into 16 geographic regions, including the three public water treatment stations. Water samples were collected from November 1999 to October 2001. Two samples were drawn from each region. Samples were sent to the Fluoride Health Surveillance Laboratory at Universidade do Vale do Itajaí. Fluoride ana… Show more
“…This temporal increase in the proportion of water samples with appropriate fluoride levels demonstrates the importance of longitudinal studies and the effectiveness of constant monitoring, which facilitates the operational control of water fluoridation procedures and improves the quality of public water supplies. [19][20][21][22][23] In another study of eight cities in northwestern São Paulo State conducted during a 36-month period from November 2004 to October 2007, Saliba et al 24 found a higher proportion (77.4%) of water samples with fluoride levels within recommended parameters. However, it should be noted that these eight cities used a single water source.…”
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
“…This temporal increase in the proportion of water samples with appropriate fluoride levels demonstrates the importance of longitudinal studies and the effectiveness of constant monitoring, which facilitates the operational control of water fluoridation procedures and improves the quality of public water supplies. [19][20][21][22][23] In another study of eight cities in northwestern São Paulo State conducted during a 36-month period from November 2004 to October 2007, Saliba et al 24 found a higher proportion (77.4%) of water samples with fluoride levels within recommended parameters. However, it should be noted that these eight cities used a single water source.…”
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
“…Todos os estudos citados mostraram variação na adequação da concentração de flúor ao longo do tempo e dos pontos de coleta, e elevada proporção de concentrações consideradas inadequadas em sua maioria 12,14,15,17,21,22,23,24,26 . Evidenciam-se, assim, dificuldades operacionais na manutenção adequada da concentração ótima de flúor nas águas de abastecimento público no contexto brasileiro, justificando a necessidade e importância da instituição e manutenção de sistema de vigilância sanitária da fluoretação das águas de abastecimento públi-co. Em acréscimo, problemas legais contribuem para tal situação.…”
Section: Discussionunclassified
“…Entre elas: as normas do Laboratório de Vigilância do Flúor da UNIVALI, que foram utilizadas em Chapecó e também em outros estudos 23,26 ; a Portaria nº. 518 30 , que estabelece um ponto de coleta para cada 10 mil habitantes 18 ; e a distribuição por região administrativa e geográfica 12,15,16,17,27 .…”
“…Na Tabela 1, constata-se que a maioria das amostras não atingiu a faixa aceitável (0,60 a 20 apresenta resultado semelhante em Niterói, Rio de Janeiro. Falhas do controle da fluoretação tem sido verificada por estudos tanto no Nordeste como em outras regiões do país 21,22,23,24,25 . A situação observada na cidade de São Paulo é diferente pois das amostras examinadas, 93% estavam com concentração de flúor em níveis considerados ótimos 12 .…”
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