Effects of recasting on the chemical composition, microstructure, microhardness, and ion release of 3 dental casting alloys and titanium

被引：0
|
作者：
Peraire, Maria
Martinez-Gomis, Jordi
Anglada, Josep M.
Bizar, Josep
Salsench, Juan
Gil, Francesc J.
机构：
[1] Univ Barcelona, Fac Dent, Dept Prosthodont, E-08907 Lhospitalet De Llobregat, Spain
[2] Univ Politecn Catalunya, Dept Mat Sci & Met Engn, Res Ctr Biomed Engn, E-08028 Barcelona, Spain
来源：
INTERNATIONAL JOURNAL OF PROSTHODONTICS | 2007年 / 20卷 / 03期
关键词：
9;
D O I：
暂无
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
This study evaluated the effects of recasting on high noble, noble, and nickel-based alloys, as well as on titanium. Four specimens of each material were cast and recast 7 times. Chemical composition, microstructure, microhardness, and ion release were determined before and after the first cast and following each recast. Zinc and tin concentrations in the high noble alloy decreased significantly with recasting; consequently, the release of these ions decreased as well. A significant increase in Vickers hardness appeared in the fifth recast in both the high noble alloy and titanium. The noble alloy and the nickel-based alloy demonstrated great stability after 7 recasts. The results suggest not recasting titanium.
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页码：286 / 288
页数：3
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