title: [Color comparison of VITA shade guide and metal ceramic restoration].
abstract: OBJECTIVE
  To understand color distribution of Vita shade guide and metal ceramic restoration and make Vita shade guide more reasonable in clinical applying.
  
  
  METHODS
  The international standard CIE1976L*a*b* color system and Minolta CR-100 spectrocolorimeter were selected to measure and compare the characteristics of the shade guide and metal ceramic restoration.
  
  
  RESULTS
  Color differences were noted between the shade guide and ceramic restorations. The value of metal ceramic restoration was brighter than that of VITA shade guide tab. There was different chroma between metal ceramic restoration and Vita shade guide. Metal ceramic restorations were yellower and redder. But no saturation differences were found between ceramic restorations and D2, D3 tabs.
  
  
  CONCLUSIONS
  During clinical color-matching of metal ceramic porcelains, it is suggested that a VITA shape guide tab with lower brightness and paler color than that of adjacent teeth should be selected.
authors.affiliation: First Qingdao Sanatoria, Jinan Military Region.
authors.forename: H
authors.initials: H
authors.lastname: Yang
authors.forename: J
authors.initials: J
authors.lastname: Sun
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
mesh_terms: D003124:Colorimetry; D003442:Crowns; D017267:Dental Prosthesis Design; D003830:Denture, Partial, Fixed; D016876:Metal Ceramic Alloys; D017797:Prosthesis Coloring / Q000592:standards*
chemical_list: D016876:Metal Ceramic Alloys