Hassel Alexander J, Doz Priv, Nitschke Ina, Rammelsberg Peter
Department of Prosthodontics, University of Heidelberg, INF 400, 69120 Heidelberg, Germany.
Int J Prosthodont. 2009 Jan-Feb;22(1):72-4.
It was investigated whether Lab* values for teeth as well as shade tabs for one 3D-Master shade were similar to one another. Teeth were measured using Vita Easyshade and Lab* values and the closest 3D shade was then recorded. The shade-guide tabs were also measured using the same device. 3D-Master shades yielded different Lab* values for the teeth than for the tabs. L* and a* values, especially, were systematically different. Therefore, Easyshade Lab* values for teeth and tabs could not be directly compared.
研究了同一3D-Master比色板的牙齿Lab值与比色片的Lab值是否彼此相似。使用Vita Easyshade测量牙齿并记录Lab值，然后记录最接近的3D色号。比色板也使用相同设备进行测量。3D-Master比色板得出的牙齿Lab值与比色片的不同。尤其是L值和a值存在系统性差异。因此，牙齿和比色片的Easyshade Lab*值不能直接比较。
