期刊
JOURNAL OF SYNCHROTRON RADIATION
卷 20, 期 -, 页码 705-710出版社
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S0909049513019444
关键词
human dental enamel; caries; X-ray diffraction; FTIR
资金
- Federal Target Program 'Scientific and research pedagogical staff of innovative Russia' [GK8153]
- Russian Foundation for Basic Research [13-02-97500]
- National Science Foundation [DMR-0537588]
Investigations of intact dental enamel as well as carious-affected human dental enamel were performed using infrared spectromicroscopy and X-ray diffraction applying synchrotron radiation. Caries of enamel was shown to be characterized by an increase in the number of deformation and valence vibrations for N-C-O, N-H and C=O bonds, a decrease of the crystallinity index, and by the absence of the preferable orientation of hydroxyapatite crystals within the affected enamel. This indicates the presence of destructive processes in the organic matrix of hard tooth tissues.
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