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Journal of Dental Research, Vol 61, 811-813, Copyright © 1982 by International & American Associations for Dental Research Online Journals
ARTICLES |
G. C. Paffenbarger, N. W. Rupp and P. R. Patel
Two copper-free amalgams expanded excessively after storage in air at 60 degrees C for about five yr. One expanded significantly at 37 degrees C and slightly at 23 degrees C. High silver content, absence of copper, and presence of small amounts of zinc, or all three, seemed to promote very high expansions at 60 degrees C.
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