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J Dent Res 53(6): 1420-1424, 1974
© 1974 International and American Associations for Dental Research

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Reactions in Glass Ionomer Cements: III. The Precipitation Reaction

STEPHEN CRISP 1 and ALAN D. WILSON 1

1 Laboratory of the Government Chemist, Department of Trade and Industry, Cornwall House, Stamford Street, London SE1 9NQ, England

WVater-soluble ions in dental cements of different ages were studied. The cement is formed by the reaction between aqueous polyacrylic acid and an aluminosilicate glass. Electrical conductance measurements were made on cements up to three months after formation. Calcium polyacrylate is formed before aluminum polyacrylate. Calcium ions are fully combined within three hours, whereas aluminum ions continue to react for at least 48 hours.

Submitted on August 17, 1973







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