(1. 第四军医大学口腔医学院修复科 陕西省西安市 710032； 2. 博方生物医用材料有限公司；3. 北京理工大学颜色科学与工程国家专业实验室； 4. 清华大学新型陶瓷与精细工艺国家重点实验室)
[摘要]目的：尝试用三刺激值匹配的方法实现齿科可切削氟硅云母微晶玻璃陶瓷的计算机配色。方法：选用自制的氟硅云母玻璃粉，加入不同浓度的高温色料，按照相同的烧结工艺制备黄、红、黑三个系列的单色梯度浓度样品，用分光辐射计分别测定单色浓度样与靶目标样的光谱数据，并用自编配色软件进行三刺激值匹配计算，得到匹配靶目标样的色料浓度配比数据，进行相同工艺的配色样制备，最后将配色样与靶目标样色度进行对比评价。结果：三种色料梯度浓度样的光谱反射比数据随浓度增加呈现良好的递减趋势，采用三刺激值配色软件计算的色料浓度制备的配色样与靶目标样色度值比较接近，色差为2.4915～3.2343。结论：采用三刺激值法进行该修复材料的计算机配色，方法可行，色差在允许范围以内。
[关键词]三刺激值；计算机配色；色差；齿科材料；云母；玻璃陶瓷
[中图分类号]R783.1 [文献标识码]A [文章编号]1008-6455(2004)06-0713-03
Tristimulus matching technique of computer color matching for dental machinable fluorosilicic mica glass-ceramics
LI Jiang1, WANG Zhong-yi1, CAO Xiao-gang2, LIAO Ning-fang3, TIAN Jie-mo4
(1. Department of Prosthdontics, College of Stomatology, the Fourth Military Medical University, Xi'an 710032,Shaanxi Province, China; 2. Beijing Bofang Biomaterials Inc; 3.State Professional Laboratory of Color Science and Engineering, Beijing Institute of Technology; 4.State Key Laboratory of New Ceramics and Fine Processing, Institute of Nuclear Energy Technology, Tsinghua University)
Abstract: Objective To realize computer color matching for dental machinable fluorosilicic mica glass-ceramic with the tristimulus matching technique. Methods Fluorosilicic mica glass powder was added with three kinds of pigment of different concentration, then molded and sintered to be three series of single-chroma-samples. The spectral datum of the single-chroma-samples and aim-samples (VITAMARKⅡblocs) were measured by spectroradiometer, and then processed by self-compiled programme to get prescriptions for color matching. The matching-samples according to the calculated prescriptions were prepared and compared with the aim-samples in chromatism. Results With the increase of the concentration of the pigments, the spectral reflectance of three series of single-chroma-samples increased. The chromatic values of matching-samples and aim-samples were approximate, and the chromatisms between them were in range from 2.4915 to 3.2343. Conclusion The tristimulus computer color matching technique is feasible for color matching of dental fluorosilicic mica glass-ceramic. The chromatisms between matching-samples and aim-samples are clinically acceptable.
Key words: tristimulus matching; computer color matching; chromatism; dental materials; mica; glass ceramics
减小字体
增大字体