X-Ray absorption fine structure analysis of the local environment of zinc in dentine treated with zinc compounds

It has been reported that zinc oxide (ZnO) inhibits dentine demineralization. By using the X‐ray absorption fine structure (XAFS) technique, our aims in this study were to provide information about the local environment of zinc atoms in dentine that had been treated with zinc compounds. We measured...

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Bibliographic Details
Published in:European journal of oral sciences 2005-04, Vol.113 (2), p.180-183
Main Authors: Takatsuka, Tsutomu, Hirano, Junko, Matsumoto, Hitoshi, Honma, Tetsuo
Format: Article
Language:English
Subjects:
Animals
Cattle
Chlorides - pharmacokinetics
Collagen - chemistry
demineralization
Dental Enamel - chemistry
Dental Enamel - metabolism
Dentin - chemistry
Dentin - metabolism
dentine
Dentistry
Durapatite - chemistry
Spectrum Analysis
X-Rays
XAFS
zinc
Zinc - analysis
Zinc Compounds - pharmacokinetics
Zinc Oxide - pharmacokinetics
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Summary:It has been reported that zinc oxide (ZnO) inhibits dentine demineralization. By using the X‐ray absorption fine structure (XAFS) technique, our aims in this study were to provide information about the local environment of zinc atoms in dentine that had been treated with zinc compounds. We measured the Zn K‐edge X‐ray absorption near‐edge structure (XANES) and the extended X‐ray absorption fine structure (EXAFS) of dentine specimens treated with zinc chloride or ZnO. In XAFS analyses, the spectra of dentine specimens treated with ZnO (D‐ZO) or with zinc chloride (D‐ZC) were similar and obviously different from the reference ZnO spectrum. This suggests that most of the zinc atoms detected in D‐ZO are not derived from particles of ZnO. The spectra of D‐ZO and D‐ZC were similar to the spectrum of the synthetic, zinc‐containing hydroxyapatite, but were not similar to that of zinc in ZnCl2‐treated collagen. The results of this study suggest that most of the zinc atoms detected were attached to hydroxyapatite and not to collagen.
ISSN:0909-8836
1600-0722
DOI:10.1111/j.1600-0722.2005.00194.x