X-ray Diffraction Study of Acid-degradable Glasses

The composition of the degradable glasses used in commercial dental glass-ionomer cements determines their leaching behavior and hence the properties of the cement. The objective of the present study was to assess if the composition and leaching in acetic acid solutions are reflected in the x-ray di...

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Bibliographic Details
Published in:Journal of dental research 2001-08, Vol.80 (8), p.1764-1767
Main Authors: De Maeyer, E.A.P., Verbeeck, R.M.H.
Format: Article
Language:English
Subjects:
Acetates - chemistry
Aluminum Silicates - chemistry
Cations - chemistry
Compomers - chemistry
Composite Resins - chemistry
Dentin-Bonding Agents - chemistry
Dentistry
Diffusion
Glass - chemistry
Glass Ionomer Cements - chemistry
Humans
Maleates - chemistry
Materials Testing
Methacrylates - chemistry
Resins, Synthetic - chemistry
Silicates - chemistry
Silicon - chemistry
X-Ray Diffraction
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Summary:The composition of the degradable glasses used in commercial dental glass-ionomer cements determines their leaching behavior and hence the properties of the cement. The objective of the present study was to assess if the composition and leaching in acetic acid solutions are reflected in the x-ray diffraction characteristics of these glasses. The position (26) of the maximum of the first sharp diffraction peak shifts to higher diffraction angles with increasing number and ionic radius of mono- and bivalent cations in the glass. Upon acid-leaching, these ions are preferentially leached out, so that (26) decreases. These results can be related to the decreasing Si-Si distance in the glass network with increasing modifier radius.
ISSN:0022-0345
1544-0591
DOI:10.1177/00220345010800081601