不同抛光方法对牙科钴铬合金离子析出影响研究  

Effect of different polishing methods on the ion release of Co-Cr dental alloy

作　　者：童新文[1] 郑明[1] 程辉[1] 杨松[1] 许才明[2] 

机构地区：[1]福建医科大学附属口腔医院修复科口腔生物力学及美学研究中心,福州350002 [2]福建出入境检验检疫局检验检疫技术中心,福州350001

出　　处：《中国实用口腔科杂志》2014年第1期28-31,共4页Chinese Journal of Practical Stomatology

基　　金：福建省卫生厅青年科研课题(2012-2-58)

摘　　要：目的比较不同抛光方法对钴铬合金离子析出的影响。方法本研究于2013年3—8月在福建医科大学附属口腔医院进行。制作30个钴铬合金试样,随机分为5组,分别为砂纸抛光组、镜面抛光组、橡皮轮抛光组、电解抛光组和化学抛光组,每组6个试样。根据ISO 10271:2011标准采用浸泡实验检测试样Co、Cr离子的析出情况。检测腐蚀前的表面粗糙度和腐蚀前后表面形貌。结果镜面抛光组Co、Cr析出量之和小于橡皮轮抛光组、电解抛光组和化学抛光组(P<0.05)。化学抛光组表面粗糙度最大(P<0.05)。化学抛光组Co、Cr析出量及其总和均大于砂纸抛光组、镜面抛光组、橡皮轮抛光组、电解抛光组(P<0.05)。扫描电镜观察表明,砂纸抛光组、橡皮轮抛光组、化学抛光组表面有明显的腐蚀痕迹。结论钴铬合金经镜面抛光可获得最好的表面形貌和抗腐蚀性能,化学抛光对钴铬合金表面形貌改善不大,其抗腐蚀性能最差。Objective To evaluate the effect of different polishing methods on ion element release of cobaltchromium dental alloys. Methods Thirty cobaltchromium dental alloys specimen were prepared and randomly divided into five groups, with six specimen in each group. The polishing methods were as follows ： abrasive paper polishing, mirror polish ing, rubber wheel polishing, electrolytic polishing and chemical polishing. An static immersion method was used in test ing the ion release of Co, Cr of specimens. The surface roughness before immersion was tested and scanning electron mi croscope （SEM）was used to confirm the surface change of test specimens. Results Specimens polished by chemical got the roughest surface（P 〈 0.05 ）. The amount release of Co, Cr and the summation of five groups had significant difference （P 〈 0.05）. SEM results showed that the corrosive marks on the surface of specimens polished by abrasive paper, rubber wheel, electrolytic and chemical were very evident. There were not corrosive marks on the surface of mirror polishing group. Conclusion The mirror polishing may provide the smoothest surface and the best anticorrosion performance for cobaltchromium dental alloys, while chemical polishing does not make the surface of specimens smooth enough and then the specimens are more vulnerably corroded relatively.

关 键 词：钴铬合金 不同抛光方法 表面粗糙度 离子析出 

分 类 号：R78[医药卫生—口腔医学]