Initiation of Cracks in Dental Amalgam

Abstract

The force required to initiate cracks in dental amalgam beams was measured and related to the microstructure. The force measured was dependent on age and on the distribution of phases on the tension side of the beam. The Ag-Cu phase is most resistant to failure in Dispersalloy and an experimental alloy.

Get full access to this article

View all access options for this article.

References

Asgar, K. , and Sutfin, L.V. : Brittle Fracture of Dental Amalgam, J Dent Res 44: 977, 1965.

Allen, F.C. ; Asgar, K. ; and Peyton, F.A. : Microstructure of Dental Amalgam, J Dent Res 44: 1002-1012, 1965.

Younis, O. : Forces Needed to Initiate a Crack in Dental Amalgams, MS thesis, University of Michigan, School of Dentistry, 1974.

Guenther, W.C. : Analysis of Variance, Englewood Cliffs, NJ: Prentice-Hall, Inc., 1964.

Asgar, K. : Behavior of Copper in Dispersed Amalgam Alloy, abstracted, IADR Program and Abstracts of Papers, No. 15, 1971.

Mahler, D.B. : Microprobe Analysis of a Dispersant Amalgam, abstracted, IADR Program and Abstracts of Papers, No. 14, 1971.

Asgar, K. : Amalgam Alloy with a Single Composition with Behavior Similar to Dispersalloy , J Dent Res 53 (Special Issue) : Abstract No. 23, 1974.

Fairhurst, C.W. : Crystallography of Dental Amalgam, PhD dissertation, Northwestern University, 1966.

Wing, G. , and Ryge, G. : Setting Reactions of Spherical-Particle Amalgams, J Dent Res 44: 1325-1333, 1965.