title: Effects of polishing on surface roughness, gloss and color of surface reaction type pre-reacted glass-ionomer filled resin composite.
abstract: OBJECTIVE
  To evaluate the effects of polishing on surface roughness, gloss and color of different shades of surface reaction type pre-reacted glass-ionomer (S-PRG) filled nano-hybrid resin composite.
  
  
  METHODS
  Resin disks of 15 mm diameter and 2 mm thickness and final polish with 1000-grit SiC paper, super fine cut diamond (FG) point, silicon (MFR) point and Super-Snap mini-disk red (SNAP) were made with Beautifil II shades: A2, A20, Inc). One week after curing, the surface roughness, gloss and color were measured. Data was analyzed with ANOVA and Fisher's PLSD with alpha= 0.05
  
  
  RESULTS
  For all shades, the order of roughness (Ra) ranked according to groups of 1000-grit SiC > FG > MFR > SNAP with significant differences among all groups. For all shades, the order of gloss ranked according to groups of SNAP > MFR > FG > 1000-grit SiC with significant differences among the groups except for between MFR and FG without significant difference. The influence of the surface roughness on color differed among the polishing groups and shades. However, the values of the color differences (deltaE*ab) between the polishing groups of all shades were imperceptible to the naked eye.
authors.affiliation: Department of Pediatric Dentistry, Course of Medical and Dental Science, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1, Sakamoto, Nagasaki 852-8588, 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: Masashi
authors.initials: M
authors.lastname: Miyazaki
authors.forename: Franklin
authors.initials: F
authors.lastname: García-Godoy
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry*; D017554:Carbon Compounds, Inorganic / Q000737:chemistry; D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D003775:Dental Polishing / Q000295:instrumentation / Q000379:methods*; D018130:Diamond / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D053761:Nanocomposites / Q000737:chemistry; D055620:Optical Phenomena; D012825:Silicon / Q000737:chemistry; D017655:Silicon Compounds / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*; D013053:Spectrophotometry; D013499:Surface Properties; D013997:Time Factors
chemical_list: D000180:Acrylic Resins; C470433:Beautifil composite resin; D017554:Carbon Compounds, Inorganic; D003188:Composite Resins; D003764:Dental Materials; D017655:Silicon Compounds; C015897:glass ionomer; D017438:Bisphenol A-Glycidyl Methacrylate; D012822:Silicon Dioxide; D018130:Diamond; C022088:silicon carbide; D012825:Silicon