Changes in chemical composition and collagen structure of dentin tissue after erbium laser irradiation
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2004
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Brazilian Dental Journal
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Resumo
The erbium laser light has a great affinity to the water molecule,
which is present in great quantity in biological hard tissues. The
objective of this work is to identify chemical changes by infrared
spectroscopy of irradiated dentin by an Er:YAG - 2.94μm laser.
The irradiation was performed with fluences between 0.365
J/cm2 and 1.94 J/cm2. For the infrared analysis a Fourier transform
infrared spectrometer was used. After the irradiation were
observed: loss of water, alteration of the structure and composition
of the collagen and increase of the OH- radical. These alterations
can be identified by a decrease of the water and OH- band between 3800-2800 cm-1, bands ascribed to collagen structure
between 1400-1100 cm-1. The results show that the erbium laser
changes the structure and composition of the organic matrix, OHradical
and the water composition in the irradiated dentin.
Como referenciar
BACHMANN, L.; DIEBOLDER, R.; HIBST, R.; ZEZELL, D.M. Changes in chemical composition and collagen structure of dentin tissue after erbium laser irradiation. Brazilian Dental Journal, v. 15, p. 78-78, 2004. Special issue. Disponível em: http://repositorio.ipen.br/handle/123456789/32734. Acesso em: 20 Mar 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.