Vrijhoef M M, Letzel H
J Oral Rehabil. 1986 Jul;13(4):299-303. doi: 10.1111/j.1365-2842.1986.tb00663.x.
In the literature there is controversy over the existence of a correlation between creep and marginal deterioration of amalgam restorations. It was the aim of this study to re-investigate this correlation. In five clinical trials, 2068 amalgam restorations were made of six conventional alloys and ten high copper systems. The results show a correlation between creep and marginal fracture in the conventional, low copper amalgams. No correlation could be found for the group of high copper, non-gamma-2, amalgams. It is emphasized that dental practitioners should not buy their amalgam alloy on the basis of creep data, because wrong decisions might be taken. Evidence from a controlled clinical study is a more reliable criterion.
文献中对于汞合金修复体的蠕变与边缘劣化之间是否存在相关性存在争议。本研究的目的是重新调查这种相关性。在五项临床试验中，用六种传统合金和十种高铜合金系统制作了2068个汞合金修复体。结果表明，传统的低铜汞合金中蠕变与边缘断裂之间存在相关性。对于高铜、非γ-2汞合金组，未发现相关性。需要强调的是，牙科医生不应根据蠕变数据来购买汞合金，因为可能会做出错误的决定。来自对照临床研究的证据是更可靠的标准。
