title: [The study on color space of the VINTAGE & UNIBOND standard color].
abstract: OBJECTIVE
  To research the color space of the standard color board, guide the clinic work of color match, and establish an foundation for deeper researching.
  
  
  METHODS
  Through taking analysis of reflecting spectrum and spectral tristimulus, each parameter of the color on standard board was found out. The color difference between border upon colors on board was worked out through matching the color parameters. The number of color space between each border upon color on standard color board, divided by deltaE = 1.5, was found.
  
  
  RESULTS
  The number of color space between each border upon color was 3-6. The color space was bigger in group B, but smaller in group D. The color space was bigger in high lightness area, but smaller in low lightness area.
  
  
  CONCLUSIONS
  Some color space has been found between standard color borders of VINTAGE and UNIBOND. Color of natural teeth is unable to be completely included into standard color border, especially in clinical care.
authors.affiliation: Dept. of Prosthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041, China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Luo
authors.forename: Rui
authors.initials: R
authors.lastname: Lai
authors.forename: Bei-yan
authors.initials: BY
authors.lastname: Lou
authors.forename: Min
authors.initials: M
authors.lastname: Wang
authors.forename: Yong-lie
authors.initials: YL
authors.lastname: Chao
mesh_terms: D003124:Colorimetry; D003776:Dental Porcelain / Q000592:standards*; D017797:Prosthesis Coloring / Q000592:standards*
chemical_list: C096474:Vintage Porcelain; D003776:Dental Porcelain