Mahler D B
J Biomed Mater Res. 1979 Sep;13(5):693-9. doi: 10.1002/jbm.820130503.
Amalgams made from three single-composition high-Cu alloys of the same nominal composition were investigated for differences in creep behavior. The curves of creep vs. final Hg content for all three alloys showed a sudden creep increase (jump) at approximately 46% final Hg content. Previous studies have shown this creep jump to be associated with the initiation of the Sn--Hg phase (gamma 2). The anticipated final Hg content in clinical restorations for two of these alloys is below the creep jump and gamma 2 would not be expected. On the other hand, the clinical Hg content for the third alloy was above its creep jump and gamma 2 would be expected. The effect on clinical behavior of this finding require further investigation.
对由三种具有相同标称成分的单一成分高铜合金制成的汞齐进行了蠕变行为差异研究。所有三种合金的蠕变与最终汞含量曲线在最终汞含量约为46%时均显示出蠕变突然增加（跳跃）。先前的研究表明，这种蠕变跳跃与Sn-Hg相（γ2）的形成有关。其中两种合金临床修复体的预期最终汞含量低于蠕变跳跃点，预计不会出现γ2相。另一方面，第三种合金的临床汞含量高于其蠕变跳跃点，预计会出现γ2相。这一发现对临床行为的影响需要进一步研究。
