Abstract
The presence or excess of very low concentrations of fluoride in the groundwater has been a major factor in the dental epidemiology of Sri Lanka. There is a clear boundary between the Wet Climatic Zone and the Dry Zone of the country. The high fluoride content in the groundwater (sometimes in excess of 5 mg/l) is generally found in the Dry Zone, particularly in the North Central Province. Dental fluorosis is prevalent in these Dry Zone areas whereas in the Wet Zone, the fluoride content of water is very low and results in dental caries. This particular environmental health problem is of special importance to Sri Lanka in that the vast majority of the population of the country depend on untreated groundwater for their domestic water supplies. The health of this population therefore is controlled to a marked degree by the chemistry of the groundwater.
The compilation of maps showing the distribution patterns of fluoride in groundwater is vital in the implementation of rural water supply schemes. The use of appropriate technology in the design of simple deflouridating techniques and active rural community participation are of particular importance in the management of groundwater supplies in “flouride?rich or poor” zones.
*Original abstract online at https://www.tandfonline.com/doi/abs/10.1080/00207239108710658
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Prevalence of Enamel Fluorosis Among 12-19 Year-Olds, U.S., 1999-2004.
E. BELTRAN, Centers for Disease Control and Prevention, Atlanta, GA, USA, and L. BARKER, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USAObjective: To describe the prevalence of enamel fluorosis among adolescents aged 12 to 15 and 16 to 19 years using data from the three most recent cycles
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Osteo-dental fluorosis in relation to age and sex in tribal districts of Rajasthan, India.
An association between the incidence of osteo-dental fluorosis with age and sex was studied in 18621 residents of 73 villages of two tribal districts, Dungarpur and Udaipur of Rajasthan (India). The mean fluoride (F) concentration in drinking water sources of these villages varied from 1.0 to 6.1 mg/L. Out of
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Dental caries and fluorosis experience of 8-12-year-old children by early-life exposure to fluoride.
BACKGROUND: It is important to evaluate concurrently the benefit for dental caries and the risk for dental fluorosis from early exposure to fluoride among children. AIM: To evaluate associations of different levels of exposure to fluoride in early childhood with dental caries and dental fluorosis experience in school children. METHODS: A Child
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Excessive fluoride induces endoplasmic reticulum stress and interferes enamel proteinases secretion
Protein retention in the enamel layer during tooth formation is well known to be associated with dental fluorosis but the underlying mechanism is unclear. The functions of the endoplasmic reticulum (ER) correlate directly with secreted protein metabolism. We used an ameloblast-derived cell line to determine whether excessive amounts of fluoride
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Fluorosis and dental caries in 6-8-year-old children in a 5 ppm fluoride area
Fluorosis levels and caries prevalence were evaluated in 152 children aged 6-8 yr residing from birth in an area with 5 ppm fluoride in the drinking water. Sixty-two of the subjects had mild fluorosis in both primary and permanent dentition, 31 were defined as moderate, and 4 cases had no
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