An improved tensile specimen has been developed for dental casting gold alloys. This design approximates the size of most dental castings, is easily produced, conforms with current engineering specifications, and can be used in the as-cast condition. Conducted tests showed that the specimens yield reliable mechanical values which should permit better correlation between materials-testing procedures and applied research efforts.
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References
1.
"Specification No. 5 for Dental Casting Gold Alloy," in Guide to Dental Materials, 3d ed, Chicago: American Dental Association, 1966, pp 124-26.
2.
Crowell, W.S.: The Development of Physical Testing of Dental Materials and Specifications for Testing Methods, JADA19: 87-97, 1932.
3.
Taylor, N.O. ; Paffenbarger, G.C.; and Sweeney, W.T.: Inlay Casting Golds: Physical Properties and Specifications, JADA19:36-61, 1932.
4.
Souder, W., and Paffenbarger, G.C. : Physical Properties of Dental Materials, "Circular of the National Bureau of Standards, C433," Washington, DC: Government Printing Office, 1942, pp 53-65.
5.
Hollenback, G.M.: A Study of the Tensile Strength of Cast Gold Rods, J Calif Dent Assn31:168-71, 1963.
6.
Ingersoll, C.E. : Investigation of Tensile Specimen Design for Dental Casting Gold Alloys, J Dent Res43(abstr M19): 918, 1964.
7.
Shell, J.S., and Hollenback, G.C. : Physical Property Measurements on Cast Gold Specimens of Dental Dimensions, J Calif Dent Assn40:486-91, 1964.
8.
Shell, J.S., and Hollenback, G.C. : Physical Properties of Dental Gold Castings Closely Approximating Dental Dimensions, J S Calif Dent Assn33:20-23, 1965.
9.
AstmDesignation: E8-66. Standard Methods of Tension Testing of Metallic Materials , in ASTM Stand, Part 31, 1967, pp 201-20.
10.
Oberg, E., and Jones, F.D.: Machinery's Handbook, 11th ed, New York: International Press, 1942, p 1296.
11.
"Specification No. 14 for Dental Chromium-Cobalt Alloy," in Guide to Dental Materials, Chicago: American Dental Association, 1966, pp 150- 52.
12.
Astm Metric PracticeGuide, 2d ed, Philadelphia : American Society for Testing and Materials, 1966.
