带金属底冠的定制比色板与VITA比色板的色度学分析比较  

Comparison of Color Character of VITA Shade Guide and the Custom Shade Guide

作　　者：陈玲[1] 李志勇[2] 刘宪 巢永烈[1] 刘文芳 许力强 陈肖芳 

机构地区：[1]口腔生物医学工程教育部重点实验室四川大学,四川成都610041 [2]浙江大学医学院附属第一医院口腔医学中心,浙江杭州310003 [3]暨南大学医学院附属第二医院深圳市人民医院口腔医学中心,广东深圳518020

出　　处：《华西口腔医学杂志》2006年第4期328-331,共4页West China Journal of Stomatology

摘　　要：目的比较VITA比色板和带金属底冠定制比色板的颜色特性。方法采用PR-650型光谱扫描色度仪分别对5套VITA比色板和5套带金属底冠的定制比色板进行9区颜色测量。结果VITA比色板的色度值范围L为56.86—73.86,a为-1.29—3.69,b为7.09—21.94,透明度为3.20—7.59;定制比色板的色度值范围L为60.59—78.54,a为-1.09—4.99,b为7.60—22.35,透明度为0.23—10.98。与VITA比色板相比,定制比色板的L、a、b较大,二者的透明度也存在差异,同名比色片间的色差值大于1.5NBS。结论VITA比色板和定制比色板的颜色存在差异,金属底冠对金瓷修复体的颜色有一定影响,在临床比色时应予以充分考虑。Objective To compare the color character of VITA shade guide and the custom shade guide with metal substrate. Methods Color of 9 sites of 5 series of VITA shade guides and custom shade guides with metal substrate were measured by means of PR-650 spectrophotometer. Resulls The color range of VITA shade guide were that L＊ was 56.86-73.86, a＊ was-1.29-3.69, b＊ was 7.09-21.94, and the transparence was 3.20-7.59. The color range of the custom shade guide was that L＊ was 60.59-78.54, a＊ was -1.09-4.99, b＊ was 7.60- 22.35, and the transparence was 0.23-10.98. L＊, a＊ and b＊ of the custom shade guide with metal substrate were higher than VITA shade guide, and the transparence was differet. The color difference of homonymy shade tab between custom shade guide and VITA shade guide was larger than 1.5 NBS. Condusion There is color difference between VITA shade guide and custom shade guide. Metal substrate has effects on the color of cero-metal prosthesis, and color selection in clinic should be carefully considered.

关 键 词：定制比色板 颜色测量 透明度 

分 类 号：R783.2[医药卫生—口腔医学]