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The fluoride content of human tooth enamel in relation to environmental exposure to fluoride

The fluoride content of human tooth enamel in relation to environmental exposure to fluoride

Australian Dental Journal 27(4): 243-247

Double-layer superimposed biopsies were used for sampling sound labial enamel of upper permanent central incisor teeth of 189 children (mean age 8.4 yr, SD = 0.36), comprising 5 groups, representing life-long exposure to contrasting concentrations of F in the water (range .ltoreq. 0.12-2.8 ppm) and to supplements of 200 or 350 mg F/kg domestic salt. The mean F concentrations of enamel ranged through the groups from 924-2401 ppm in the surface layer (average central depth = 0.49 .mu.m) and from 450-1428 ppm in the subsurface layer (average central depth = 2.62 .mu.m). The differences between the mean F concentrations of the groups were significant in each instance and the values consistently reflected the extent of F exposure. The F content of enamel was a reliable indicator of environmental exposure to F for populations, but not for every individual.

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Accession: 006678677

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PMID: 6960864

DOI: 10.1111/j.1834-7819.1982.tb04105.x

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