Lussi A, Meier M, Buzzi R A, Hotz P
School of Dentistry, University of Bern, Switzerland.
Dent Mater. 1990 Oct;6(4):279-81. doi: 10.1016/s0109-5641(05)80011-9.
Release of mercury and copper over time from three different non-gamma-2 amalgams in a polished and unpolished state was tested in water and two soft drinks. The measuring methodology was geared to warrant minimum Hg losses due to evaporation and adsorption. Initial (24 h) values for Hg and Cu were relatively high in water, but were much lower in the soft drinks. The 24-104-hour values were much lower than the initial readings for all amalgams and all environments. Polishing reduced leaching--significantly, however, only in water and for only two of the three amalgams. The lower values in the soft drinks and over time could be due to passivation of the amalgam. Passivation appears to be time-dependent and chemically influenced by the environment.
研究了三种不同的非γ-2型汞合金在抛光和未抛光状态下，随时间在水和两种软饮料中汞和铜的释放情况。测量方法旨在确保因蒸发和吸附造成的汞损失最小。汞和铜的初始（24小时）值在水中相对较高，但在软饮料中则低得多。对于所有汞合金和所有环境，24至104小时的值远低于初始读数。抛光减少了浸出——然而，仅在水中且仅对三种汞合金中的两种有显著效果。软饮料中较低的值以及随时间的变化可能是由于汞合金的钝化。钝化似乎与时间有关，并且在化学上受环境影响。
