Estimation of optimal concentration of fluoride in drinking water under conditions prevailing in Chile.
Community Dent Oral Epidemiol
; 26(4): 249-55, 1998 Aug.
Article
em En
| MEDLINE
| ID: mdl-9758425
The purpose of this comparative study of caries and dental fluorosis experience in Chilean children was to estimate the optimal range of fluoride concentration in tap water under conditions currently prevailing in Chile. The sample included 2431 schoolchildren 7, 12 and 15 years old, life-long residents of five communities with fluoride concentrations in their tap water in the range 0.07-1.1 mg/L. The study population received an oral clinical examination including caries experience and an enamel fluorosis evaluation of the permanent dentition (Dean's scoring system). For 15-year-old children, the DMFT index changed from 5.06 to 2.60, and for 12-year-olds it changed from 3.10 to 1.36 when fluoride water concentration changed from 0.07 to 1.10 mg/L. For 7-year-old children the dmft index correspondingly changed from 3.67 to 1.59. The relationship between DMFT for 12-year-olds and water fluoride concentration was best fitted by a logarithmic function (r2=0.98). The Community Fluorosis Index (CFI) was used to assess enamel fluorosis in the study population, and it showed a linear relationship (r2=0.983) with increasing fluoride concentration of water for the 12-year-old group. Results obtained suggest that under current Chilean conditions, the optimal range of fluoride concentration in potable water should lie in the 0.5-0.6 mg/L range.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cariostáticos
/
Fluoretação
/
Cárie Dentária
/
Fluoretos
/
Fluorose Dentária
Tipo de estudo:
Etiology_studies
/
Prevalence_studies
/
Risk_factors_studies
Limite:
Adolescent
/
Child
/
Female
/
Humans
/
Male
País/Região como assunto:
America do sul
/
Chile
Idioma:
En
Revista:
Community Dent Oral Epidemiol
Ano de publicação:
1998
Tipo de documento:
Article
País de afiliação:
Chile
País de publicação:
Dinamarca