摘要
目的 分析两种烤瓷比色板的颜色分布特点 ,并与中国人牙齿颜色分布范围比较。方法 采用CIE1931XYZ及CIE1976LL a b 颜色参数系统 ,应用人体牙齿颜色测量分光光度计系统对Vita、Ivoclar烤瓷比色板各色片进行测量分析 ,与中国人牙齿颜色范围进行比较。结果 ①两种烤瓷比色板颜色分布范围未能覆盖中国人正常牙颜色分布范围 ;②两种烤瓷板呈现不同的表现 :Ivoclar比色板明度较大 ,且偏红 ,蓝色不足 ,Vita比色板则明度不足 ,红色、黄色色片不足 ,③两种烤瓷比色板均存在颜色分布不合理现象。结论 两种比色板颜色范围较窄 。
Objective To analyze the color range of two imported shade guide and compare the color range of shade guide with that of Chinese teeth. Methods With the color index system of CIE1931XYZ and CIE1976LL*a*b*,the colors of the two kinds of imported shades-Vita and Ivoclar- were measured with the spectrophotometry system of human teeth color which has a fiber-optic heading, and compare with the color rang of Chinese teeth. Results The distribution range of the clolr of the two shade guides failed to cover that of normal Chinese teeth. Vita shade guide had less bright and yellow color. Ivoclar shade guide had brighter color, comparing with the color range of Chinese teeth color. Both shade guides had unreasonable problems in the color distribution.Conclusion Having a smaller color distribution space, the colors of Ivoclar and Vita shade guides cannot meet the demands of Chinese teeth color completely.
关键词
比色板颜色测量
颜色
Meansurement
Color
Shade guide
