目的　通过扫描电镜观察和临床菌斑指数的检查 ,评价磨具打磨后自身上釉和抛光对金瓷修复体瓷表面光洁度及其上菌斑聚集程度的影响。方法　实验分四组 ,每组按实验条件用磨具将瓷表面处理 ,然后三组自身上釉 ,一组抛光。结果　扫描电镜观察见自身上釉的三组样本瓷表面光洁度高于瓷表面抛光组 ,瓷表面菌斑较少。结论　自身上釉可获得高度光滑的瓷表面光洁度 ,菌斑附着少。而抛光使瓷表面较粗糙 ,菌斑聚集较多 ,可能会对牙龈组织有损害 Objective To evaluate the effect of glazing and polishing on the surface finish and the degree of plaque accumulation on porcelain-fused-to-porcelain restoration by scanning electron microscopy and clinical plaque index. Methods The experiment was divided into four groups, each group according to the experimental conditions with a porcelain surface treatment, and then three groups of their own glazing, a group of polished. Results The results of scanning electron microscopy showed that the surface finish of the three groups of glazed samples was higher than that of the porcelain surface polishing group, and the porcelain surface plaque was less. Conclusion It is possible to obtain a highly smooth porcelain surface finish by self-glazing, with less plaque attachment. Polishing porcelain surface roughness, plaque accumulation more, may damage the gum tissue