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Marginal Fracture vs Mechanical Properties of Amalgam
David B. Mahler
Department of Dental Materials Science, University of Oregon Dental School, Portland, Oregon 97201, USA
Louis G. Terkla
Department of Dental Materials Science, University of Oregon Dental School, Portland, Oregon 97201, USA
Jan Van Eysden
Department of Dental Materials Science, University of Oregon Dental School, Portland, Oregon 97201, USA
Morris H. Reisbick
Department of Dental Materials Science, University of Oregon Dental School, Portland, Oregon 97201, USA
The clinical marginal fracture characteristics of three commercial dental amalgams were evaluated and compared with a number of their mechanical properties to determine which properties would relate best to clinical performance. It was found that compressive strength, tensile strength, transverse strength, transverse deflection, and flow as determined by ADA Specification No. 1 were ineffective, whereas the rheological properties of dynamic creep, static creep, and slow compressive strength appeared effective in relating to marginal fracture.
Journal of Dental Research, Vol. 49, No. 6,
1452-1457 (1970)
DOI: 10.1177/00220345700490064901
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