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Materials Science Dielectric Properties of Glass Ionomer Cements-Further Studies
W.M. Tay
Dental School, The London Hospital Medical College, Turner Street, London E1 2AD, England
M. Braden
Dental School, The London Hospital Medical College, Turner Street, London E1 2AD, England
Two recent proprietary glass ionomer cements showed that in the early stages of set the changes in relative permittivity (dielectric constant) and resistivity were rapid. However, when set, measurements indicated that the cements were highly ionic and polar and behaved similarly to the glass ionomer cements previously reported. 1
REFERENCES
- Tay, W.M. and Braden, M.: Dielectric Properties of Glass Ionomer Cements, J Dent Res 60:1311-1314, 1981.[Free Full Text]
- Wilson, A.D. and Kent, B.E.: The Glass Ionomer Cement, A New Translucent Dental Filling Material, J Appl Chem Biotechnol 21:313, 1971.
- Schmitt, W.; Purrman, R.; Jochum, P.; and Zahler, W.D.: Unsaturated a, β-Dicarboxylic Acids, U.S. Patent Nos. 3, 804,794 (1974) and 3, 882, 080 (1975).
- Stecher, P.G.: New Dental Materials, Park Ridge, NJ: Noyes Data Corporation, 1980, pp. 126-127.
- Braden, M. and Clarke, R.L.: Dielectric Properties of Zinc Oxide-eugenol Type Cements, J Dent Res 53: 1263-1267, 1974.[Abstract/Free Full Text]
- Wilson, A.D. and Kent, B.E.: Dental Silicate Cements: V. Electrical Conductivity, J Dent Res 47:463-470, 1968.[Abstract/Free Full Text]
- Braden, M. and Clarke, R.L.: Dielectric Properties of Polycarboxylate Cements, J Dent Res 54:7-9, 1975.[Free Full Text]
Journal of Dental Research, Vol. 63, No. 1,
74-75 (1984)
DOI: 10.1177/00220345840630011901

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