✦ LIBER ✦

Effect of age on the creep of a high-copper amalgam

✍ Scribed by Mahler, David B. ;Nelson, Lyle W.

Publisher: John Wiley and Sons
Year: 1981
Tongue: English
Weight: 206 KB
Volume: 15
Category: Article
ISSN: 0021-9304
DOI: 10.1002/jbm.820150607

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✦ Synopsis

Abstract

A previous study of the effect of final Hg content on the static creep of a single‐composition high‐Cu amalgam alloy showed a sudden increase or jump in creep at a specific Hg content, and the presence of the SnHg phase (γ~2~) at final Hg contents subsequent to this creep jump. This observation is consistent with the less‐than‐optimum clinical performance reported for this alloy. A repetition of these tests conducted on test specimens 3 months and 6 months of age showed the creep jump to shift to higher Hg contents. However, even at 6 months of age, the final Hg content to be expected in clinical restorations was still positioned after the initiation of the creep jump where a small amount of γ~2~ is known to be present.

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