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Journal of Dental Research
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*Compound via MeSH
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*COPPER, ELEMENTAL
*SILVER COMPOUNDS
*SILVER, ELEMENTAL
*TIN
*TIN COMPOUNDS
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Structure and Effects of Non-gamma-2 Amalgam

Toshio Takatsu

Department of Operative Dentistry, Tokyo Medical and Dental University, 45-5 Yushima 1-chome, Bunkyo-ku, Tokyo, Japan

Masaaki Iwaku

Department of Operative Dentistry, Tokyo Medical and Dental University, 45-5 Yushima 1-chome, Bunkyo-ku, Tokyo, Japan

Takao Fusayama

Department of Operative Dentistry, Tokyo Medical and Dental University, 45-5 Yushima 1-chome, Bunkyo-ku, Tokyo, Japan

A non-{gamma}2 amalgam was investigated using optical microscopy, electron probe microanalysis, and a micro hardness test. Its improved mechanical properties seem to be the result of the remarkable hardness of reaction rings. Its decreased marginal fracture seems to be caused by the absence of the corrosion-prone {gamma} 2 phase which may cause extrusion of the margins.

Journal of Dental Research, Vol. 56, No. 1, 40-45 (1977)
DOI: 10.1177/00220345770560010801
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T. Okabe, R. Mitchell, M.B. Butts, A.H. Wright, and C.W. Fairhurst
A Study of High Copper Amalgams. I. A Comparison of Amalgamation on High Copper Alloy Tablets
Journal of Dental Research, July 1, 1978; 57(7): 759 - 767.
[Abstract] [PDF]

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 JDRHome page
T. Okabe, R. Mitchell, A.H. Wright, and C.W. Fairhurst
A Study of High Copper Amalgams. II. Amalgamation on a Hg-Plated High Copper Alloy Containing 30 Wt% Cu
Journal of Dental Research, July 1, 1978; 57(7): 768 - 771.
[Abstract] [PDF]