title: Effects of polishing on surface roughness, gloss, and color of resin composites.
abstract: This study evaluated the effects of polishing on surface roughness, gloss, and color of regular, opaque, and enamel shades for each of three resin composites. Two-mm-thick resin disks made with Estelite Σ Quick, Clearfil Majesty, and Beautifil II were final polished with 180-, 1000-, and 3000-grit silicon carbide paper. Surface roughness, gloss, and color were measured one week after curing. Estelite Σ Quick had significantly lower roughness values and significantly higher gloss values as compared with Clearfil Majesty and Beautifil II. The effects of surface roughness and gloss on color (L*a*b*) differed among resin composites and by shade. Correlation coefficients between surface roughness and L*a*b* color factors were generally high for Clearfil Majesty, partially high (i.e., between roughness and L*) for Beautifil II, and low for Estelite Σ Quick. Correlation coefficients between gloss and L*a*b* color parameters were generally high for Beautifil II and low for Estelite Σ Quick and Clearfil Majesty. However, for all resin composites, the values of the color differences between 3000-grit and 180-grit polishing groups for all shades were imperceptible by the naked eye.
authors.affiliation: Department of Pediatric Dentistry, Course of Medical and Dental Science, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan. hosoya@nagasaki-u.ac.jp
authors.forename: Yumiko
authors.initials: Y
authors.lastname: Hosoya
authors.forename: Takanobu
authors.initials: T
authors.lastname: Shiraishi
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Odatsu
authors.forename: Junichi
authors.initials: J
authors.lastname: Nagafuji
authors.forename: Mayumi
authors.initials: M
authors.lastname: Kotaku
authors.forename: Masashi
authors.initials: M
authors.lastname: Miyazaki
authors.forename: John M
authors.initials: JM
authors.lastname: Powers
mesh_terms: D017438:Bisphenol A-Glycidyl Methacrylate; D003116:Color; D003124:Colorimetry; D003188:Composite Resins; D003775:Dental Polishing; D008422:Materials Testing; D013499:Surface Properties
chemical_list: C470433:Beautifil composite resin; D003188:Composite Resins; C507124:Estelite sigma; C541508:clearfil majesty; D017438:Bisphenol A-Glycidyl Methacrylate