Hanawa T, Gnade B E, Ferracane J L, Okabe T, Watari F
Department of Dental Materials and Engineering, Hokkaido University School of Dentistry, Sapporo, Japan.
Dent Mater J. 1993 Dec;12(2):118-26. doi: 10.4012/dmj.12.118.
The surface layers formed on both a zinc-free and a zinc-containing dental amalgam after polishing and aging in air, water, or saline, were characterized using x-ray photoelectron spectroscopy (XPS) to determine the compositions of the surface layers which might govern the release of mercury from amalgam. The XPS data revealed that the formation of the surface layer on the zinc-containing amalgam was affected by the environment in which the amalgam was polished and aged, whereas that on the zinc-free amalgam was not affected. In addition, among the elements contained in amalgam, zinc was the most reactive with the environment, and was preferentially dissolved from amalgam into water or saline. Mercury atoms existed in the metallic state in the surface layer.
对不含锌和含锌的牙科汞合金在空气、水或盐水中抛光和老化后形成的表面层，使用X射线光电子能谱（XPS）进行表征，以确定可能控制汞从汞合金中释放的表面层组成。XPS数据显示，含锌汞合金表面层的形成受汞合金抛光和老化环境的影响，而不含锌汞合金的表面层形成不受影响。此外，在汞合金所含元素中，锌与环境反应性最强，优先从汞合金中溶解到水或盐水中。汞原子以金属态存在于表面层中。
