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Article: RESEARCH ALERT - DENTAL MATERIALS: Comparison of effects of organic acids on zinc polycarboxylate dental cements
- Article from:
- Biomedical Materials
- Article date:
- June 1, 1996
CopyrightCOPYRIGHT 1996 International Newsletters. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Zinc polycarboxylate cement is widely used in clinical dentistry, in such applications as liners beneath either amalgam or composite resin restorations, and as a cement for orthodontic appliances. In this study, J.W. Nicholson at King's College School of Medicine and Dentistry in London compared the effects of three acids on the setting
characteristics and compressive strength of zinc polycarboxylate dental cement. The acids include citric, lactic and (+)-tartaric acid.
All three acids are stronger than poly(acrylic acid) yet, at 20% concentration, gave variable results in terms of their effect on setting, Nicholson found. For example, (+)-tartaric acid ...
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