Raman spectroscopic studies of CO2 laser-irradiated human dental enamel

Aminzadeh, A., Shahabi, S. and Walsh, L. J. (1999) Raman spectroscopic studies of CO2 laser-irradiated human dental enamel. Spectrochimica Acta, Part A, 55 6: 1303-1308. doi:10.1016/S1386-1425(99)00035-9


Author Aminzadeh, A.
Shahabi, S.
Walsh, L. J.
Title Raman spectroscopic studies of CO2 laser-irradiated human dental enamel
Journal name Spectrochimica Acta, Part A   Check publisher's open access policy
ISSN 1386-1425
Publication date 1999
Sub-type Letter to editor, brief commentary or brief communication
DOI 10.1016/S1386-1425(99)00035-9
Volume 55
Issue 6
Start page 1303
End page 1308
Total pages 6
Place of publication New York
Publisher Elsevier Science
Collection year 1999
Language eng
Subject C1
320800 Dentistry
730112 Oro-dental and disorders
Abstract While the effects of carbon dioxide (CO2) laser radiation on the physical properties of human dental enamel are well characterized, little is known regarding laser-induced chemical changes. In this study, enamel was exposed to CO2 laser radiation to induce fusion and recrystallization, and the Raman spectra recorded using both dispersive and Fourier-transformed (FT) Raman spectroscopy. Spectra were compared to a heat-treated specimen of hydroxyapatite (HAP) and enamel. Laser irradiation induced chemical changes which differed from those induced by heat treatment. Comparing the Raman spectra of lased enamel to HAP and tricalcium phosphate (TCP), it is evident that CO2 laser irradiation of enamel causes the partial conversion of HAP to TCP. The effect of laser irradiation is not merely a simple local heating effect as previously thought, since simple heating of enamel leads to the formation of both TCP and Ca(OH)(2), while laser treatment of enamel results in the formation of TCP but not Ca(OH)(2). (C) 1999 Elsevier Science B.V. All rights reserved.
Keyword Raman Spectroscopy
Co2 Laser
Human Dental Enamel
Hydroxyapatite
Spectroscopy
Carbon-dioxide Laser
Apatites
Q-Index Code C1

Document type: Journal Article
Sub-type: Letter to editor, brief commentary or brief communication
Collection: School of Dentistry Publications
 
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Created: Tue, 10 Jun 2008, 14:35:21 EST