Yao Jiang-wu, Li Shui-gen, Lin Jin-ying
Department of Prosthodontics, Xiamen Dental Hospital, Xiamen 361003, China.
Hua Xi Kou Qiang Yi Xue Za Zhi. 2007 Oct;25(5):481-4.
To evaluate the matching of the shade between beverage and modifying porcelain shade guide according to Munsell color order system, thus to provide the reference basis for selecting modifying porcelain to mimic the stain of natural tooth by technician.
The shade of Vita Akzent, Vita Interno, Shofu Vintage & Unibond and Noritake Super Porcelain EX-3 shade tabs as well as 15 kinds of beverage were measured according to Munsell color order system on Color-Eye 7000A spectrophotometer. The difference of the frequency of approximate hue, value, and chroma between shade tabs and beverage were compared by calculating the Fisher exact probabilities.
The frequency of approximate hue between 4 kinds of shade tabs and 15 kinds of bev-erage was significant different (P<0.05), while the frequency of approximate value, and chroma was not significant different (P>0.05).
Except the hue, the color distribution of 4 kinds of shade tabs was similar to that of 15 kinds of beverage. But the color of beverage also can be approximately matched by any kind of modifying porcelain by mixing porcelain powder of appropriate hue, value, and chroma.
依据孟塞尔颜色系统评估饮料与烤瓷比色板之间的颜色匹配情况，从而为技师选择烤瓷材料模仿天然牙色斑提供参考依据。
在Color-Eye 7000A分光光度计上按照孟塞尔颜色系统测量Vita Akzent、Vita Interno、松风Vintage&Unibond和Noritake Super Porcelain EX-3比色片以及15种饮料的颜色。通过计算费舍尔精确概率比较比色片与饮料之间近似色调、明度和彩度频率的差异。
4种比色片与15种饮料之间近似色调的频率差异有统计学意义（P<0.05），而近似明度和彩度的频率差异无统计学意义（P>0.05）。
除色调外，4种比色片的颜色分布与15种饮料相似。但通过混合具有合适色调、明度和彩度的瓷粉，任何一种烤瓷材料也可大致匹配饮料的颜色。
