氟斑牙体瓷层比色板的初步研制及颜色分析

Initial development and chromatic value analysis of customized dental fluorosis shade guide

目的为解决个别牙缺失及缺损的氟斑牙患者烤瓷修复中的比色及颜色调配问题,定制氟斑牙金属基底体瓷层比色板来模拟氟斑牙的基色调。方法采用牙本质修饰瓷和牙本质瓷粉按一定比例混合后烧制而成氟斑牙体瓷层比色板。分别模拟轻、中、重度氟斑牙基色调。采用松风Shade eye NCC电脑比色仪测定其色度学各要素(L*a*b*)值。结果 (1)比色板各组颜色分布具有一定规律性。(2)各组比色板色差及分布区域明显不同。(3)定制比色板的色度值范围绝大多数在氟斑牙色度值范围内,说明定制比色板的颜色能模拟一部分氟斑牙颜色。结论定制氟斑牙金属基底体瓷层比色板对于临床氟斑牙比色有一定意义,但其精度有待于进一步提高。

Objective In order to resolve the problems of shade selection and color matching in porcelain for the patients with apart of odontoptosis dental fluorosis. Customized dental fluorosis shade guide simulate dental fluorosis dentinal primary colour. Methods Vita dentinal porcelain powders and Vita dentine modifier porcelain powders were selected in special prescription to mix and shade guide tabs were made,Which simulate the lightly degree,the midrange degree and weight degree dental fluorosis dentinal primary color. Chromaticity element value（L ＊ , a＊ , b ＊ ） were measured by a computer-aided Shade Eye NCC. Results （1） The color distribution in each group of customized dental fluorosis shade guide showed regular pattern. （2） The arrangement order of chroma of the each group color guide marked different color stage in chrome and diffeange. （3） The majority chromatic value rent ramplitude of customized shade guide was simulated the chromatic value amplitude of dental fluorosis. Conclusion The customized metal dental fluorosis shade guide have a special meaning in clinical dental fluorosis shade guide,but its precision need to be improved in the future.