关键词: 抛光, 磨耗, 全瓷, Dental polishing, abrasion and wear, porcelain

Abstract: Objective To investigate the effect of polishing on the surface roughness and abrasion resistance of two kinds of ceramics materials. Methods The surface roughness value and scanning electron microscopy（SEM）were used to analyze the influence of polishing on the surface roughness of two kinds of ceramics materials: Emax porcelain and Everest zirconium dioxide. The effects of polishing on wear property were also evaluated by wear test. Results The ceramic surface became much smoother after polishing（P<0.05）.The polished specimens caused significantly lower volume loss of specimens and opposite talcum ceramic than the unpolished ones（P<0.05）.Conclusions Surface polishing could decrease the surface roughness of the ceramics. The polishing procedures could also reduce the wear of the natural enamel and increase the abrasive resistance of ceramics.