title: Color differences between resin composites and shade guides.
abstract: The color of manufacturers' shade guides was compared with the color of the actual resin composites. Five light-activated resin composite products were evaluated. Resin specimens and shade guides of same thickness were measured with a spectrophotometer. Color differences (delta E* values) were more than perceptible in all products. The mean delta E* values were least in Z100 and greatest in Herculite XR. Generally, the L* and b* values of the shade guides were higher than those of the resin composites. Some colors showed color differences greater than the acceptable level.
authors.affiliation: Department of Conservative Dentistry, Seoul National University, College of Dentistry, Korea.
authors.forename: H S
authors.initials: HS
authors.lastname: Kim
authors.forename: C M
authors.initials: CM
authors.lastname: Um
mesh_terms: D003116:Color / Q000592:standards*; D003188:Composite Resins; D003779:Denture Design; D004955:Esthetics, Dental; D017797:Prosthesis Coloring / Q000592:standards*; D015203:Reproducibility of Results; D019279:Resin Cements; D012822:Silicon Dioxide; D013223:Statistics as Topic; D015040:Zirconium
chemical_list: D003188:Composite Resins; C088833:Prisma TPH resin composite; D019279:Resin Cements; C090969:Tetric; C083568:Z100 composite resin; C065770:Herculite XR; C074741:Silux Plus; D012822:Silicon Dioxide; D015040:Zirconium