GEOSCIENCES, DISTRIBUTION OF FLUORIDE IN GROUNDWATER AND PREVALENCE OF ENDEMIC DENTAL FLUOROSIS IN THE MUNICIPALITY OF SANTANA, BAHIA (BR)

• DOI: 10.22533/at.ed.1592222230041

• Palavras-chave: Geosciences and Health, Bambuí Aquifer, Fluorite, Multivariate Analysis.

• Keywords: Geosciences and Health, Bambuí Aquifer, Fluorite, Multivariate Analysis.

• Abstract:

  This research aimed to investigate the relationship between the consumption of groundwater with natural levels of fluoride and the prevalence of dental fluorosis in the municipality of Santana, West Bahia, Brazil. Water samples were collected from 52 tubular wells located in the rocks of the Bambuí Group. The physical-chemical variables were measured in situ, with the aid of a multiparameter probe, and aliquots were taken for the analysis of cations (ICP-OES), anions, and even F- (SPADNS). The epidemiological research included a cross-sectional study of the prevalence of dental fluorosis in 159 schoolchildren at 12 years of age (Dean Index). Cluster analysis contributed to understanding the prevalence of dental fluorosis, which was 53% (17% in moderate to severe degrees) and its relationship with groundwater consumption with fluoride levels between 0.05 and 8.88 mg. L-1, where 43% of the samples exceeded the local optimum potability limit (0.80 mg. L-1). This profile of dental fluorosis in the municipality of Santana was in disagreement with data from the national epidemiological survey of oral health and was considered suggestive of an endemic area.

• Número de páginas: 26