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1 Lee YK, "Variation in instrument-based color coordinates of esthetic restorative materials by measurement method-A review" 26 : 1098-1105, 2010
2 Marcus RT, "The measurement of color, In Color for science, art and technology" Elsevier 48-49, 1998
3 Carsten DL, "Successful shade matching--what does it take" 24 : 175-182, 2003
4 Ishikawa-Nagai S, "Spectrophotometric analysis of tooth color reproduction on anterior all-ceramic crowns: Part 1: analysis and interpretation of tooth color" 22 : 42-52, 2010
5 Gokce HS, "Shade matching performance of normal and color vision-deficient dental professionals with standard daylight and tungsten illuminants" 103 : 139-147, 2010
6 Heffernan MJ, "Relative translucency of six all-ceramic systems. Part I: core materials" 88 : 4-9, 2002
7 Anusavice K, "Philips’' science of dental materials" Saunders 655-719, 2003
8 Lee YK, "Perceived color shift of a shade guide according to the change of illuminant" 105 : 91-99, 2011
9 Volpato CA, "Optical influence of the type of illuminant, substrates and thickness of ceramic materials" 25 : 87-93, 2009
10 O’'Brien WJ, "One-dimensional color order system for dental shade guides" 5 : 371-374, 1989
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