Methods: 1414 nature teeth of Nanjing citizen and four kinds of shade guide,including Vitapan 3D-Master,Ivoclar Chromascop,Shofu Halo(19 tabs),Vita Lumin Vacuum,were analyzed by dental chromameter ShadeEye NCC on CIE 1976L*a*b* color system.

• 方法:采用国际照明委员会(C IE)1976L*a*b*色度系统,用ShadeEye NCC测色仪对南京地区居民1 414颗天然牙和V itapan 3D-M aster、V ita Lum in Vacuum、松风HALO(19色)、Ivoc lar Chrom ascop 4种比色板进行色度研究。