FT-Raman investigation of human dental enamel surfaces

Mihaly, Judit and Gombas, Veronika and Afishah Alias and Mink, Janos (2009) FT-Raman investigation of human dental enamel surfaces. Journal of Raman Spectroscopy, 40 (8). pp. 898-902. ISSN 0377-0486

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FT-Raman spectra of human enamel surfaces from sound, affected (with 1 cavity) and highly affected (with at least 3 cavities) tooth samples were analyzed by principal component analysis (PCA). Major differences between the unaffected and affected tooth samples seem to arise from the structural changes along the c-axis of hydroxyapatite, the chief crystalline component of human dental enamel. Based on Fisher index calculations, the most discriminative value was obtained for the intensity of the only Raman active ν2PO3-4 (E1) symmetric deformation mode at 428 cm-1. Moreover, these changes can be observed through the whole tooth enamel surface, establishing a predisposition to caries correlated to chemical and structural composition of tooth enamel. No spectral changes regarding the CO2-3 substitution were detected by both nondestructive FT-Raman and FTIR (Fourier transform infrared) spectroscopy of the powdered teeth samples. © 2009 John Wiley & Sons, Ltd.

Item Type: Article
Keyword: Fisher index, FT-Raman spectroscopy, FTIR spectroscopy, Human dental enamel, Principal component analysis
Subjects: R Medicine > RK Dentistry
Department: SCHOOL > School of Science and Technology
Depositing User: ADMIN ADMIN
Date Deposited: 01 Apr 2011 15:36
Last Modified: 30 Dec 2014 11:51
URI: https://eprints.ums.edu.my/id/eprint/2636

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