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  Home > JCE Print > Journal of Chemical Education > Issues > 1999  > November  >
Chemistry Everyday for Everyone
Products of Chemistry
The Chemistry of Modern Dental Filling Materials
John W. Nicholson
King's Dental Institute, University of London, Denmark Hill, London, UK

H. Mary Anstice
Biomaterials Department, Eastman Dental Institute, University of London, London WC1X 8LD, UK

Cover
November 1999
Vol. 76 No. 11
p. 1497
Abstract
The chemistry underpinning modern tooth-colored dental fillings is described. Two broad groups of material are covered, the so-called composite resins and the glass-ionomer cements. Composite resins consist of bulky difunctional monomers together with high loadings of powdered inorganic fillers, and they set by addition polymerization. Glass-ionomers consist of aqueous polymeric acids, such as polyacrylic acid, plus basic glass powders. They set by a neutralization reaction, but leave a substantial amount of the glass unreacted, to act as reinforcing filler. Various attempts have been made to combine the attractive properties of these materials, and the different types of hybrids of them are described. The importance of chemistry to this important branch of health care is emphasized.

Featured on the Cover
More Information
*  Citation
 Nicholson, John W.; Anstice, H. Mary. J. Chem. Educ. 1999 76 1497.
*  Keywords
 Polymer Chemistry; AcidÐBase Chemistry; Materials Science; Public Understanding
*  History
 Created:
Last Updated:		 October 12, 1999
June 23, 2005
LInk to Cover added (April 2004).
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