ESCA-Analysis of tin compounds on the surface of hydroxyapatite

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RESEARCH PRODUCT

ESCA-Analysis of tin compounds on the surface of hydroxyapatite

Heinz Duschner Karin Schenk-meuser

subject

Materials science Toothpaste business.product_category Chemical shift chemistry.chemical_element Mineralogy equipment and supplies Biochemistry Electron spectroscopy chemistry.chemical_compound stomatognathic system chemistry Dentifrice Tin business Fluoride Nuclear chemistry

description

The formation of tin compounds on the surface of hydroxyapatite, the main crystalline component of teeth, is discussed controversially. SnF2 is used as an anticaries agent in toothpaste preparations. Pure hydroxyapatite (HAP) is treated with extracts of commercially available toothpastes containing tin fluoride and analyzed by electron spectroscopy (ESCA). Survey spectra and depth profiles are recorded. The chemical shifts measured for the HAP samples are compared with those of standard tin compounds. It is concluded that on the surface of hydroxyapatite a mixture of two-valent fluoro-phosphato compounds is formed. SnO is not found in the mixture.

year	journal	country	edition	language
1997-05-21	Fresenius' Journal of Analytical Chemistry

https://doi.org/10.1007/s002160050402

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