Letter
Since it has been established that the dental disease in man known as “mottled enamel” is due to the drinking of water containing fluorine, the removal of fluorides by filtration has become an important problem.
I have found that a contact filter 15 cm high, made of river sand passing a screen 60 to the inch, to which has been added 2 per cent. by weight of powdered aluminium, will remove the fluoride from a solution containing 30 parts per million of sodium fluoride. The absence of fluoride in the filtrate was determined by the zirconium-alizarin colorimetic method.
S.P. Kramer
Ft. Thomas, KY.
*Read letter online at https://science.sciencemag.org/content/80/2086/593.1
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Health risk in children to fluoride exposure in a typical endemic fluorosis area on Loess Plateau, north China, in the last decade
Highlights Fluoride concentrations were 0.55 mg L-1 in 3427 water consumption points in Shanxi Province. Health risks were assessed for children consumers regarding fluoride exposure. Approximately 10%, 1.3% and 0.06% children are at risk for dental decay, dental and skeletal fluorosis, respectively. The fluoride concentrations were being decreased significantly from
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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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Effects of smoking, use of aluminum utensils, and tamarind consumption on fluorosis in a fluorotic village of Andhra Pradesh, India
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Genetic factors underlie the susceptibility and the resistance to dental fluorosis (DF). The A/J (DF susceptible) and 129P3/J (DF resistant) mouse strains have previously been used to detect quantitative trait loci (QTLs) associated with DF on chromosome (Chr) 2 and Chr 11. In the present study, increased marker density genotyping
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