Vibrational monitor of early demineralization in tooth enamel after in vitro exposure to phosphoridic liquid.
Spectrochim Acta A Mol Biomol Spectrosc
; 173: 19-33, 2017 Feb 15.
Article
em En
| MEDLINE
| ID: mdl-27588727
ABSTRACT
The Raman spectroscopic method has been applied to quantitatively assess the in vitro degree of demineralization in healthy human teeth. Based on previous evaluations of Raman selection rules (empowered by an orientation distribution function (ODF) statistical algorithm) and on a newly proposed analysis of phonon density of states (PDOS) for selected vibrational modes of the hexagonal structure of hydroxyapatite, a molecular-scale evaluation of the demineralization process upon in vitro exposure to a highly acidic beverage (i.e., CocaCola™ Classic, pH=2.5) could be obtained. The Raman method proved quite sensitive and spectroscopic features could be directly related to an increase in off-stoichiometry of the enamel surface structure since the very early stage of the demineralization process (i.e., when yet invisible to other conventional analytical techniques). The proposed Raman spectroscopic algorithm might possess some generality for caries risk assessment, allowing a prompt non-contact diagnostic practice in dentistry.
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Base de dados:
MEDLINE
Assunto principal:
Análise Espectral Raman
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Bebidas Gaseificadas
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Esmalte Dentário
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Dente Molar
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article