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J Dent Res 45(6): 1723-1735, 1966
© 1966 International and American Associations for Dental Research
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Structure and Microdistribution of Components of Gold Alloys

RUNE SÖREMARK 1, GEORGE FREEDMAN 1, JOEL GOLDIN 1, and LAWRENCE GETTLEMAN 1

1 Harvard School of Dental Medicine, Boston, Massachusetts

Samples of dental gold casting alloys were subjected to a variety of analyses, including the electron probe and quantitative television microscope. Areas differing from the matrix in appearance and composition at the microscopic level were defined as "inclusions." Some of these areas appeared to be composed of metallic oxides, while others seemed to be pieces of embedded investment or polishing materials used in the conventional dental gold polishing technic. It was postulated that inhomogeneities such as these may contribute to the migration of metal ions into hard and soft oral tissues as reported by several workers. Modifications in polishing technic and improvements in the formulation of new alloys were suggested.

Submitted on January 5, 1966




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H. Hero, R. Jorgensen, and E. Sorbroden
A Low-gold Dental Alloy: Structure and Segregations
Journal of Dental Research, November 1, 1982; 61(11): 1292 - 1298.
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L. Gettleman, G. Freedman, B. Shaw, J. Goldin, and R. Soremark
Studies on a New Dental Casting Gold Alloy
Journal of Dental Research, May 1, 1967; 46(3): 595 - 601.
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