[Monitoring water fluoridation in three cities in Piauí State, Brazil].
This study aimed to monitor the fluoride concentration in the public water supply in Teresina, Floriano, and Parnaíba, Piauí State, Brazil. Samples were collected monthly for one year between 2004 and 2005. Six sites in each city were randomly selected for water sampling (total n = 576), 192 in each city. Fluoride assays were performed in duplicate, using a specific electrode. Most samples were below the optimum fluoride concentration, and only 4.3% (n = 25) presented acceptable values (0.60-0.80 ppm). Acceptable samples totaled 7.8% (n = 15), 4.7% (n = 9), and 0.5% (n = 1) in Teresina, Floriano, and Parnaíba, respectively. By conclusion, fluoride levels in the public water supply in the three cities were below the optimum concentration, and a permanent surveillance system is thus needed to guarantee effective water fluoridation in the State of Piauí.
da Silva
Josiene Saibrosa
JS
Programa de Pós-graduação em Odontologia, Universidade Federal da Paraíba, João Pessoa, Brasil.
do Val
Cinthya Melo
CM
Costa
Juliana Nolêto
JN
de Moura
Marcoeli Silva
MS
Silva
Thais Alves Elias
TA
Sampaio
Fábio Correia
FC
D001938:Brazil; D005457:Fluoridation / Q000706:statistics & numerical data*; D005459:Fluorides / Q000032:analysis*; D017736:Ion-Selective Electrodes; D008137:Longitudinal Studies; D014881:Water Supply / Q000032:analysis*
D005459:Fluorides