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目的 :测定并比较新、旧Vita比色板 (VITAPAN 3D Master和LUMINRVACUUM Farbskala)的色度差异 ,为新型Vita比色板的临床应用提供参考。方法 :采用美能达彩色色差计 (CR 32 1型 ,Minolta ,Japan)对两种比色板进行色度学测量。D6 5为测试光源。颜色的表达采用CIE1976L a b 表色系统。测试部位选择在色标的中 1 3部分 ,每个色标测 3次 ,取平均值作为该色标的色度值。结果 :新比色板的明度范围较大 ,增加了明度较低的色片 ;色片向红色做了较大偏移 ,而绿色调色片相对不足 ,黄蓝色调范围扩大 ,偏黄色片基本可以满足中国人牙的要求 ,而蓝色调色仍显相对不足。两种比色板并无一一对应关系 ,只有少数色片的颜色差别肉眼无法辨别。结论 :虽然VITAPAN 3D Master比色板比旧比色板增加了 10个色片 ,且覆盖的色度空间有所扩大 ,但仍不能完全满足中国人牙色的要求
OBJECTIVE: To determine and compare the chromaticity differences between the new and old Vita color plates (VITAPAN 3D Master and LUMINRVACUUM Farbskala) to provide a reference for the clinical application of the new Vita color plates. Methods: Colorimetric measurements of both color plates were performed using a Minolta colorimeter (Model CR 32 1, Minolta, Japan). D6 5 is the test light source. Color expression using CIE1976L a b color system. Test site selection in the color scale in 13 parts, each color measurement 3 times, take the average as the color of the color value. Results: The brightness range of the new color palette was larger, the lower the brightness was, the larger the offset was. The larger the green color was, the less the green color was. To meet the requirements of Chinese teeth, and blue toning is still relatively inadequate. There is no one-to-one correspondence between the two color palettes, and only the color differences of a few color chips can not be discerned by the naked eye. CONCLUSIONS: Although the VITAPAN 3D Master Color Palette adds 10 patches of color to the old color palette and the coverage of the chromaticity has increased, it still does not fully meet the requirements of Chinese dental color