Infrared spectrometric study of acid-degradable glasses.
J Dent Res
; 81(8): 552-5, 2002 Aug.
Article
em En
| MEDLINE
| ID: mdl-12147746
ABSTRACT
The composition of glasses used in glass-ionomer cements affects their leaching behavior and hence the properties of the cement. The aim of this study was to correlate the composition and leaching behavior of these glasses with their infrared absorption characteristics. The wavenumber of the absorption band of the Si-O asymmetric stretching vibration shifts to a higher value with decreasing content of mono- and bivalent cations in the glass. This effect can be ascribed to the influence of these extraneous ions on the glass network order and connectivity. Preferential leaching of these ions induces an increase of asymmetric stretching vibration and a general modification of the band profile. The results can be correlated with the x-ray diffraction characteristics of the glass.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Vidro
/
Cimentos de Ionômeros de Vidro
Limite:
Humans
Idioma:
En
Revista:
J Dent Res
Ano de publicação:
2002
Tipo de documento:
Article
País de afiliação:
Bélgica