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Time-temperature behavior for creep of dental amalgam

✍ Scribed by Greener, E. H. ;Szurgot, K. ;Lautenschlager, E. P.

Publisher: John Wiley and Sons
Year: 1980
Tongue: English
Weight: 463 KB
Volume: 14
Category: Article
ISSN: 0021-9304
DOI: 10.1002/jbm.820140207

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✦ Synopsis

Abstract

From 0 to 24 hours at an initial static stress of 34.5 MPa and in the temperature range of 0 to 60°C, the creep behavior of four different one‐week‐old dental amalgams was monitored in a recently developed minispecimen creep apparatus. In most instances the behavior could not be described by a linear relationship. Therefore, the usefulness of calculating creep rate based upon only two times, i.e., 1 and 4 hours, must be questioned. On the other hand, the observed creep kinetics were found to follow accepted nonlinear models of dislocation/obstacles interactions which may be thermally activated.

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