Division of Biomaterials, Department of Hard Tissue Research, Graduate School of Oral Medicine, Matsumoto Dental University, 1780 Gobara Hirooka Shiojiri, Nagano 399-0781, Japan.
Dent Mater J. 2010 Oct;29(5):542-53. doi: 10.4012/dmj.2010-005. Epub 2010 Sep 1.
Metal ions released in 1% lactic acid solution from combinations of titanium fixtures with superstructures made of dental precious metal alloys (dental alloys) and titanium and differences based on the fixing method were investigated. In combinations of titanium with dental alloys, the level of Ti release was influenced by micro-structure of titanium: it was lower when the grain size was smaller. In titanium-titanium combinations, differences in the micro-structure of metal also markedly influenced the dissolution: the level of release increased when the micro-structure of titanium was different. The Ti and V release levels were higher in combination with titanium alloy and titanium than with titanium alloy and dental alloys. Regarding the superstructure-fixture fixing method, the level of Ti release was significantly lower in cement than in direct fixation.
研究了钛修复体与牙科贵金属合金（牙科合金）和钛制成的上部结构组合在 1%乳酸溶液中释放的金属离子，以及基于固定方法的差异。在钛与牙科合金的组合中，Ti 的释放水平受钛的微观结构影响：晶粒尺寸越小，释放水平越低。在钛-钛组合中，金属的微观结构差异也明显影响溶解：当钛的微观结构不同时，释放水平增加。与钛合金和钛组合相比，钛合金和钛组合的 Ti 和 V 释放水平更高。关于上部结构-修复体固定方法，与直接固定相比，水泥固定的 Ti 释放水平显著降低。
