Spectroscopic study of ejected dental tissue after Er : YAG laser ablation
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Data
2003-05-01
Autores
Courrol, L. C.
Zezell, D. M.
Samad, R. E.
Gomes, L.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
By means of IR spectroscopy, we determined the teeth ablation mechanism by an Er:YAG laser oscillating at 2.94 mum. Ejected dental material, ablated by the laser from human teeth, was deposited on an IR window and the absorption spectra were measured in the range 2500-20,000 nm. Sound teeth were used, and the corresponding film spectra were compared to spectra obtained by traditional methods. The films spectra obtained do not differ appreciably from those obtained by the traditional method for sound teeth, indicating that the material ejected by an Er:YAG represents the tooth condition.The obtained results confirm that a spectroscopic analysis of a tooth treated with an Er:YAG laser can be done measuring the absorbance of a film composed of ejected material without the need to slice it. In addition, we could determine that the laser absorption occurs mainly by the interstitial water, and the temperature elevation of the ejected material does not exceed 60degreesC. (C) 2002 Elsevier B.V. B.V. All rights reserved.
Descrição
Palavras-chave
Er : YAG laser, ablation, spectroscopy, temperature, protein, demineralization
Como citar
Journal of Luminescence. Amsterdam: Elsevier B.V., v. 102, p. 96-100, 2003.