Physical and chemical properties of amalgam alloys containing varying amounts of copper were evaluated. Evidence presented refutes the theory of Physical strengthening due to the addition of silver-copper by its eutectic. Results suggest that reactive copper could be more advantageously added to the system by using fewer copper additive particles; these particles may need to have a greater copper content that those used in Dispersalloy.
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References
1.
Mahler, D.B. ; Terkla, L.G. ; Van Eysden, J.; and Reisbick, M.H.: Marginal Fracture vs. Mechanical Properties of Amalgam, J Dent Res49:1452-1457, 1970 .
2.
Mahler, D.B. ; Terkla, L.G.; and Van Eysden , J.: Marginal Fracture of Amalgam Restorations, J Dent Res52:823-827, 1973.
3.
Lenel, F.V., and Ansel, G.S.: A Theory of Dispersion Strengthening, Powder Metallurgy. New York: Interscience Publishers, Inc., pp. 267-304, 1961.
4.
Ansel, G.S.: The Mechanism of Dispersion Strengthening, Metallurgical Society Conferences, 47. New York: Gordon and Breach , pp. 61-405, 1966.
5.
Specification No. 1 for Dental Amalgam Alloy, Guide to Dental Materials and Devices, 6th Ed., Chicago: American Dental Association, 1972-73.
6.
Crawford, W.H. , and Larsen, J.H.: Residual Mercury Determination Process , J Dent Res34: 313-317, 1955.
Youdelis, W.V. : Dental Amalgam-U.S. Patent 3, 305, 356, U.S. Patent Office, Filed October 31, 1963.
9.
Mahler, D.B. : Slow Compressive Strength Test for Amalgam , 47th General Meeting International Association for Dental Research, I.A.D.R. Abstract 29, 1969.
