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The Chemistry of Modern Dental Filling Materials

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H. Mary Anstice

Biomaterials Department, Eastman Dental Institute, University of London, London WC1X 8LD, UK

John W. Nicholson

King''s Dental Institute, University of London, Denmark Hill, London, UK

J. Chem. Educ., 1999, 76 (11), p 1497

DOI: 10.1021/ed076p1497

Publication Date (Web): November 1, 1999

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.

Keywords (Audience):

General Public

Keywords (Domain):

Polymer Chemistry

Keywords (Feature):

Products of Chemistry

Keywords (Subject):

Acids / Bases

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This article has been cited by 1 ACS Journal articles (1 most recent appear below).

Behind the Scenes at the Toothpaste Aisle: The Chemistry of Dental Materials
Kathryn R. Williams
Journal of Chemical Education2010 87 (10), 1007-1008
- Behind the Scenes at the Toothpaste Aisle: The Chemistry of Dental Materials
  Kathryn R. Williams
  Journal of Chemical Education2010 87 (10), 1007-1008
  This contribution to the From Past Issues feature looks at Journal of Chemical Education articles about dental materials, including dentifrices, fluoride-containing additives, and formulations for dental restoration.
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