Color stability and surface roughness of polished anterior restorative materials

Dent Mater J. 2015;34(5):629-39. doi: 10.4012/dmj.2014-344. Epub 2015 Apr 29.

Abstract

The purpose of this study was to investigate the effects of different finishing-polishing techniques on the color stability and surface roughness of various anterior restorative materials after staining. A composite, a compomer, and a resin-modified glass ionomer were used to prepare 120 specimens. Specimens were divided into subgroups: polishing discs, liquid polishing material, aluminium oxidebonded discs, and control. The specimens were stained in a coffee solution. Color parameters (L*a*b*) and surface roughness before and after staining were measured. The color was affected by the material type (p<0.05) and finishing-polishing systems (p<0.05). The composite showed the highest color stability; however, the color differences of all groups were visible even to the nonskilled operator. The Ra values did not significantly change after staining for any of the restorative groups (p>0.05). The finishing-polishing systems had an effect on color after storing in staining solution.

MeSH terms

  • Acrylic Resins / chemistry
  • Coffee
  • Color
  • Composite Resins / chemistry*
  • Dental Polishing / methods*
  • Dental Polishing / statistics & numerical data*
  • Materials Testing
  • Silicon Dioxide / chemistry
  • Surface Properties

Substances

  • Acrylic Resins
  • Coffee
  • Composite Resins
  • glass ionomer
  • Silicon Dioxide