title: [Influence of different surface roughness on the wear performance of several commonly used dental materials].
abstract: OBJECTIVE
  To evaluate the influence of different surface roughness on the wear performance of several commonly used dental materials.
  
  
  METHODS
  Different disc-shaped alloy specimens were selected to grind with enamel specimens. The loss of the standard enamel samples after each wear process were calculated with weight loss method. The data was statistically analyzed using SAS14.0 software package.
  
  
  RESULTS
  The average grinding amount of wear standardized enamel samples were significantly different between 180-grit and 400-grit Ni-based alloy but not significantly different between 400-grit and 1200-grit Ni-based alloy. The average grinding amount of enamel samples with Co-Cr, Ni-Cr and titanium alloy of different roughness were significantly different.
  
  
  CONCLUSIONS
  Surface roughness will affect the wear performances of nickel-chromium alloy and cobalt-chromium alloy hard, soft cobalt-chromium alloy and titanium alloy. Supported by Research Fund of Science and Technology Commission of Shanghai Municipality(08DZ2271100,12441903001).
authors.affiliation: Department of Prosthodontics, Shanghai Jiao Tong University School of Medicine, Shanghai, China. daniyxu@163.com
authors.forename: Dan
authors.initials: D
authors.lastname: Xu
authors.forename: Nan
authors.initials: N
authors.lastname: Xiang
authors.forename: Bin
authors.initials: B
authors.lastname: Wei
mesh_terms: D002858:Chromium Alloys; D003764:Dental Materials; D008422:Materials Testing; D014025:Titanium
chemical_list: D002858:Chromium Alloys; D003764:Dental Materials; C066018:nichrome; D014025:Titanium