Microprobe and X-ray diffraction analysis of a Ag, Sn, and Au spherical alloy showed a β (Ag-Sn) and γ (Ag-Sn) structure with Au substituted for Ag and small areas of Sn-Au segregation. The γ2 Phase was not detected in amalgams made from this alloy after a short period of aging. The reaction phases were determined to be AuSn 2 and AuSn4.
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References
1.
Johnson, L.B., JR.: A New Dental Alloy, abstracted, IADR Program and Abstracts of Papers, No. 23, 1971.
2.
Johnson, L.B. ; Lawless, K.R.; Stoner, G.E.; Gardner, J.; Young, R.; Gerosky, T.R.; Op-Penheimer , S.; Bender, S.T.; and Neary, M.J.: Some Properties of Au-Containing Dental Amalgam, Biomater Med Devices Artif Organs1:223-238, 1973.
3.
Mahler, D.B.: Unpublished data, 1971.
4.
Waterstrat, R.M.: X-Ray and Neutron Diffraction Study of Amalgams with Gold Additions, abstracted, IADR Program and Abstracts of Papers, No. 53, 1972.
5.
Jorgensen, K.D. : The Mechanism of Marginal Fracture of Amalgam Fillings, Acta Odontol Scand23: 347-389, 1965.
6.
Eames, W.B., and Skinner, E.W.: A Possible Test for Working Time of Dental Amalgams, abstracted, IADR Program and Abstracts of Papers, No. 53, 1972.
7.
Mahler, D.B. ; Adey, J.D.; and Van Eysden , J.: Microprobe Analysis of Amalgam: I. Effect of Surface Preparation, J Dent Res52: 74-78, 1973.
8.
Nial, 0; Almin, A.; and Westgren, A.: X-Ray Analysis of the Systems: Gold Antimony and Silver-Tin, Z Physik Chem14: 81-90, 1931.
9.
Malhotra, M.L. , and Lawless, K.R.: Identification of Au-Sn Phase in Ag3Sn Alloys Containing Gold, J Biomed Mater Res9: 197-205, 1975.
10.
Crowell, W.S. : The Metallography of Dental Amalgam Alloys , J Dent Res33: 592-595, 1954.
11.
Greener, E.H. ; Gruber, R.G.; and Skinner, E.W.: Some Physical Properties of Silver-Tin Amalgams, J Dent Res46: 497-502, 1967.
12.
Mahler, D.B. ; Adey, J.D.; and Van Eysden , J.: Quantitative Microprobe Analysis of Amalgam, J Dent Res54: 218-226, 1975.
13.
Mahler, D.B. ; Adey, J.D.; and Van Eysden , J.: Transformation of y, in Clinical Amalgam Restorations, J Dent Res (Special Issue) 52: Abstract No. 190, 1973.
14.
Okabe, T., and Hochman, R.F.: Amalgamation Reaction on Mercury Plated Dental Alloy (Ag3Sn), J Biomed Mater Res9: 221-236. 1975.
