Lappalainen R, Yli-Urpo A
Scand J Dent Res. 1987 Aug;95(4):364-8. doi: 10.1111/j.1600-0722.1987.tb01854.x.
The release of Au, Ag, Cu and Zn elements from six commercially available gold alloys and three amalgam alloys was studied. The polarizing electropotential system with modified Fusayama solution was used. The cycle process was repeated 500 times between +/- 1000 mV during a period of 5 h 22 min. During the process samples of solution were analyzed in order to follow the release of elements. Results revealed rapid release of Zn from most alloys, release of Ag from most alloys and release of Au from two alloys. Also, rapid release of Cu was found from amalgams but not from gold alloys. Release of Ag from gold alloys showed very good passivation up to 3 h, after which it was released in varying amounts.
研究了六种市售金合金和三种汞合金中Au、Ag、Cu和Zn元素的释放情况。使用了改良的舟桥溶液极化电位系统。在5小时22分钟的时间段内，在+/- 1000 mV之间重复循环过程500次。在此过程中，对溶液样品进行分析以跟踪元素的释放。结果显示，大多数合金中Zn快速释放，大多数合金中Ag释放，两种合金中Au释放。此外，汞合金中有Cu的快速释放，但金合金中没有。金合金中Ag的释放在3小时内表现出非常好的钝化作用，之后以不同量释放。
