Long Term Follow-up of Clinical Evaluations of Lathe-Cut Versus Spherical Amalgam

Abstract

A spherical alloy was tested against a conventional lathe-cut amalgam in clinical trials. Results indicated that both alloys had comparable marginal breakdown rates. However, the three dentists who placed the restorations showed decided differences in marginal breakdown rates for their patients. Operator variable was the most significant finding.

Get full access to this article

View all access options for this article.

References

Baskar, R.M. , and Wilson, H.J. : Spherical Particle Amalgam, Br Dent J 130: 338-343, 1971.

Koran, A. , and Asgar, K. : A Comparison of Dental Amalgams Made From a Spherical Alloy and From a Comminuted Alloy, JADA 75:912-917, 1967.

Osborne, J.W. ; Ferguson, G.W. ; Sorensen , S.E. ; and Gale, E.N. : Compressive Strength of Amalgam Triturated by a High Speed Amalgamator and by an Ultra-High Speed Mixer, J Prosthet Dent 19: 598-604, 1968.

Nagai, K. ; Ohaski, M. ; and Hasegawa, K. : Comparative Study of the Marginal Strengths of Conventional and Spherical Amalgam Alloys, J Nihon Univ Sch Dent 9:49-66, 1967.

Phillips, R.W. : Skinner's Science of Dental Materials, 7th ed, Philadelphia: W. B. Saunders Company, 1973, p 312.

Mathewson, R.J. ; Bruner, F.W. ; and Noonan, R.G. : The Clinical Comparison of a Spherical Amalgam Alloy and a Conventional Amalgam Alloy, A Pilot Study, J Dent Child 34: 176-182, 1967.

Weaver, R.G. ; Johnson, B.E. ; Mccune, R.J. ; and Cvar, J.F. : Three-Year Clinical Evaluation of Spherical Dental Amalgam Alloy, abstracted, IADR Program and Abstracts of Papers, No. 267, 1970.

Binon, P. ; Phillips, R.W. ; Swartz, M.L. ; Norman, R.D. ; and Mehra, R. : Clinical Behavior of Amalgam as Related to Certain Mechanical Properties , J Dent Res 52 (Special Issue) : Abstract 509, 1973.

Duperon, D.F. ; Nevile, M.D. ; and Kasloff, Z. : Clinical Evaluation of Corrosion Resistance of Conventional Alloy, Spherical-Particle Alloy, and Dispersion-Phase Alloy , J Prosthet Dent 25: 650-656, 1971.

10.

Mahler, D.B. ; Terkla, L.G. ; and Van Eysden , J. : Marginal Fracture of Amalgam Restorations, J Dent Res 52: 823-827, 1973.

11.

Osborne, J.W. ; Gale, E.N. ; and Ferguson , G.W. : One-Year and Two-Year Clinical Evaluation of a Composite Resin Versus Amalgam, J Prosthet Dent 30: 795-800, 1973.