title: Fluoride deposition in the bones of rats determined by fluoride and X-ray diffraction analysis.
abstract: Rats were given drinking water containing up to 300 parts/10(6) F and the conversion of hydroxyapatite to fluoridated apatite was estimated chemically and by X-ray diffraction. The differences of the mean fluoride uptakes from the very different concentrations of fluoride given were significant. Prolonged washing of the bones with demineralized water released 5-10 per cent from the fluoride uptake. Formation of fluoridated apatite was evident by decreases in the a parameter of the hydroxyapatite phase. In the washed bones, there was no appreciable transformations in the a parameters. The co-existence of Mg-containing beta-Ca3(PO4)2 with the apatite phase was detected in heated bone samples. The amount of beta-Ca3(PO4)2, its dependence on the age of the bones and its Mg content are interdependent.
mesh_terms: D000818:Animals; D001031:Apatites / Q000378:metabolism; D001842:Bone and Bones / Q000378:metabolism*; D005459:Fluorides / Q000378:metabolism*; D006882:Hydroxyapatites / Q000378:metabolism; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D014961:X-Ray Diffraction
chemical_list: D001031:Apatites; D006882:Hydroxyapatites; C025105:fluorapatite; D005459:Fluorides