数码摄影在特殊色牙瓷修复比配色中的应用

目的:研究数码摄影在特殊色牙患者瓷修复比配色中的应用,探讨其对提高颜色匹配性所起的作用及存在的问题.方法:随机选取口腔修复中50例特殊色牙患者,进行数码摄影结合肉眼视觉比色,最终修复体由患者本人和医师对其进行美观效果满意度评价,应用课题组自行开发的Dental ImgShop图像处理软件采集得到相应的修复体和邻牙或对侧同名牙颜色指标(L*a*b*值),计算饱和度(Cab)和色相角(hab°),应用SAS 6.12软件包进行配对t检验,并计算色差△E值.结果:对最终修复体形态、颜色分布、切端半透明度等方面评价,患者总体满意度为98%,医师满意度为94%.特殊色牙的色度总体分布为L*值54.50～92.29,a*值-0.97～8.12,b*值-0.73～20.85,饱和度(Cab)0.85～21.34,色相角(hab°)29.73°～89.20°;最终修复体与其比较.L*a*b*值,Cab及hab°均无统计学差异,P值分别为0.19、0.54、0.34、0.08和0.57(P均＞0.05);△E在0.136～3.45(平均为0.948),其中仅有3例E≥2,在临床不可接受范围.结论:利用数码摄影结合视觉比色能全面、逼真记录和传达特殊色牙的颜色,操作更简便快捷,解决了特殊色牙患者口腔修复比配色困难的问题,达到了更佳的美观效果.

Application of digital photography in color matching of porcelain restoration in special color teeth

PURPOSE: To evaluate the clinical application of digital photography in special color teeth, and to explore the role and the problems s of digital photos to improve cosmetic effect. METHODS: Digital photography combined visual color-matching was applied in 50 cases with special color teeth in ceramic restorations selected randomly. Then the satisfactory degree of the patients and dentists was evaluated and the value of L*a*b* between prosthesis and its neighbors was collected by self-developed software Dent...