远缘链球菌g型对铸钛、钴铬合金、镍铬合金修复体腐蚀失泽的研究
A Study of Tarnish Induced by Streptococcus sobrinus Serotype g on Co-Cr , Ni-Cr and Casting Titanium Alloys
作者：宋应亮 徐君伍 马轩祥 杨巨才 余建军 王宝成
Author：Song Yingliang,Xu Junwu,Ma Xuanxiang,et al
收稿日期：2002-02-25 年卷（期）页码：2002,20(01):14-14-17.
摘要
期刊名称：华西口腔医学杂志
Journal Name：West China Journal of Stomatology
关键字：远缘链球菌g 型,失泽腐蚀,修复体,合金,
Key words：Co-Cr alloys,casting titanium,Ni-Cr alloy,tarnish,Streptococcus sobrinus serotype g,
基金项目：
本课题为国家自然科学基金资助项目(编号97000164)
中文摘要
目的:研究远缘链球菌g 型对铸钛、Co-Cr 合金、Ni-Cr 合金修复体失泽腐蚀的影响。方法:将Co-Cr 合金、Ni-Cr合金、纯钛分别铸造制备成10 mm×10 mm×1 mm板片,每组30 片。将上述3 组每组随机分空白对照组,培养基对照组、实验组各10 片。需氧环境中,将g 型远缘链球菌接种到蔗糖琼脂培养基后,将试件贴附其表面,每周转换传递一次,共10 周。0105 %戊二醛消灭细菌,清洗,2 周后用MINOLTA CR-100 型色度计观察。结果:经统计学分析可知铸钛、Co-Cr 合金、Ni-Cr 合金修复体的空白对照组与培养基对照组的L*、a*、b*值无显著差异( P > 0105) 。铸钛、Co-Cr 合金、Ni-Cr 合金修复体实验组与空白对照组、培养基对照组的L*、a*、b*值有明显差异( P
英文摘要
The objective of this study was to investigate the tarnish induced by Streptococcus sobrinus serotype g on Co-Cr , Ni-Cr and casting titanium alloys.Methods :Co-Cr , Ni-Co and casting titanium alloys were respectively machined into a size of 10 mm ×10 mm×1 mm in tablets , and totally 90 specimens with 30 of each were prepared for the test. The 30 specimens of each al2 loy were randomly and equally divided into three subgroups , including the blank control group , the media control group and the in2 oculated media group. Under the aerobic condition , the surfaces of the sucrose agar media were inoculated with Streptococcus sob2 rinus serotype g. The labeled sterile specimens were placed on the surface of the media for 10 weeks. The specimens were changed to a new sucrose media with bacteria each week. The specimens were removed after 10 weeks of incubation , immersed in 0105 % glutaraldehyde solution to eliminate AaY4 , rinsed with distilled water. After 2 weeks , the specimens were removed and observed visually or examined by MINOLTA CR-100 color apparatus. Results :Compared with the blank control , the control media without bacteria did not influence the alloy specimens ( P > 0105) . Streptococcus sobrinus serotype g caused tarnish on specimens. There was significant difference between the control media group and the blank control group with inoculated media group on all the spec2 imens ( P
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