title: Performance of a novel polishing rubber wheel in improving surface roughness of feldspathic porcelain.
abstract: Replacing glazing with polishing is still controversial in terms of the surface roughness of dental porcelains. This study investigated the polishing performance of a ceramic-polishing rubber wheel (CP-RW), which contains large uniform and rounded silicon carbide particles and small diamond particles, in improving the surface roughness of two feldspathic porcelains for sintering and CAD/CAM milling. Using a confocal laser scanning microscopy, the changes in the surface roughness parameters were evaluated before and after polishing or glazing for three surface treatment groups: SofLex polishing, CP-RW polishing, and Glazing. Regardless of the parameters, all treatments reduced roughness values (repeated measures ANOVA, p<0.05). The roughness values obtained after CP-RW polishing were lower than those obtained after SofLex polishing and glazing (2-way ANOVA, p<0.05). Polishing both ceramics with CP-RW made the surfaces smooth with the lowest roughness values in all parameters. The effect was dependent on the materials used.
authors.affiliation: Department of Dental Biomaterials Science, Seoul National University School of Dentistry.
authors.forename: Geum-Jun
authors.initials: GJ
authors.lastname: Han
authors.forename: Jae-Hoon
authors.initials: JH
authors.lastname: Kim
authors.forename: Mi-Ae
authors.initials: MA
authors.lastname: Lee
authors.forename: So-Yeon
authors.initials: SY
authors.lastname: Chae
authors.forename: Yun-Hee
authors.initials: YH
authors.lastname: Lee
authors.forename: Byeong-Hoon
authors.initials: BH
authors.lastname: Cho
mesh_terms: D000538:Aluminum Silicates; D017554:Carbon Compounds, Inorganic; D017076:Computer-Aided Design; D003764:Dental Materials / Q000737:chemistry*; D003775:Dental Polishing / Q000295:instrumentation*; D003776:Dental Porcelain / Q000737:chemistry*; D018130:Diamond; D008422:Materials Testing; D017680:Potassium Compounds; D012408:Rubber; D017655:Silicon Compounds; D013499:Surface Properties
chemical_list: D000538:Aluminum Silicates; D017554:Carbon Compounds, Inorganic; D003764:Dental Materials; D017680:Potassium Compounds; D017655:Silicon Compounds; C082340:Vita Mark II; D003776:Dental Porcelain; C016447:feldspar; D018130:Diamond; C058233:Ceramco; D012408:Rubber; C022088:silicon carbide