title: [Measurement of chromaticity of five hued zirconia].
abstract: OBJECTIVE
  To determine the chroma value of sintered IL1-IL5 zirconia materials in comparison with the Vita In-Ceram YZ color shade.
  
  
  METHODS
  Five types of shading dental zirconia ceramics with color gradient were prepared by adding Fe2O3, CeO2, and Bi2O3 to the zirconia powder, and their chroma values were determined using a spectrophotometer and the color difference was calculated.
  
  
  RESULTS
  The chroma value ranges were L: 67.76-77.78, a: -2.19-3.80, and b: 12.13-25.01. Slight deltaE was found between IL1 and LL1, IL2 and LL2, and IL3 and LL3. The deltaE between IL4 and LL4 could be compensated by veneering porcelain, whereas deltaL between IL5 and LL5 could not be compensated in this manner.
  
  
  CONCLUSIONS
  Shading dental zirconia ceramics can be prepared by addition of metal oxides with color similar to the Vita In-Ceram YZ color shades to match that of the veneering porcelain in clinical practice.
authors.affiliation: Department of Stomatology, Clinical Division of Surgery, Chinese PLA General Hospital, Beijing, 100853, China.
authors.forename: Ning
authors.initials: N
authors.lastname: Wen
authors.forename: Long-quan
authors.initials: LQ
authors.lastname: Shao
authors.forename: Yuan-fu
authors.initials: YF
authors.lastname: Yi
authors.forename: Bin
authors.initials: B
authors.lastname: Deng
authors.forename: Hong-chen
authors.initials: HC
authors.lastname: Liu
mesh_terms: D003116:Color; D003776:Dental Porcelain; D003801:Dental Veneers; D016876:Metal Ceramic Alloys; D017797:Prosthesis Coloring / Q000379:methods; D013053:Spectrophotometry; D015040:Zirconium
chemical_list: D016876:Metal Ceramic Alloys; D003776:Dental Porcelain; D015040:Zirconium; C028541:zirconium oxide