Polishing performance of different polishing tools for CEREC Blocs ceramic

: 目的 比较临床常用的几种玻璃陶瓷抛光工具对CEREC Blocs陶瓷的抛光效果，为临床抛光工具的选择提供依据。方法 制作60个陶瓷试件，随机分为6组（n=10），进行不同的表面处理。G组：釉膏上釉；SF组：使用松风Porcelain Adjustment Kit+CeraMaster 组合抛光；3M组：使用3M Sof-LexTM Discs套装抛光；Tob组：使用道邦玻璃陶瓷套装抛光；EVE组：使用EVE DIAPRO套装抛光；Ivo组：使用义获嘉伟瓦登特OptraFine®套装抛光。测量各组试件表面粗糙度值Ra、Rz并作统计分析，通过扫描电子显微镜（SEM）观测试件并对其表面形态作定性分析。结果 G、3M、SF、Ivo、EVE、Tob组的抛光后Ra值分别为（0.069±0.008）、（0.073±0.009）、（0.223±0.025）、（0.229±0.022）、（0.491±0.093）、（0.763±0.067）µm，经统计学分析，Ra值从小到大依次为G和3M组 0.05），其余各组间差异均有统计学意义（P 0.05), and SF and Ivo groups (P>0.05), but the remaining treatment groups were significantly different from each other (P<0.05). Statistical results of Rz values were the same as the Ra values, and visual analysis of the images obtained from SEM was consistent with the statistical results. CONCLUSIONS: The polishing performance of different polishing tools for CEREC Blocs ceramic was different. Sof-LexTM Discs achieved the most remarkable performance, which was comparable to that of glazing. 
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