测色仪分析Solidex树脂与比色板颜色的匹配性

Colorimetric Evaluation of the Shade Match of Solidex Resin Specimens and Vita Shade Tab

目的:分析Solidex体层树脂与Vita比色板色标颜色的匹配性。方法:选用Solidex体层树脂A1、A3、C2色调,每一色调制备5个试样(2.0mm厚,10mm直径),及Z100树脂A1、A3、C2色调树脂试样(4.0mm厚,10mm直径)作为背景试样。ShadeEyeNCC测色仪测量Solidex树脂试样及对应Vita比色板色标的L*a*b*值。测量后,减小Solidex树脂试样的厚度分别至1.8mm、1.6mm、1.4mm、1.2mm、1.0mm,测量试样颜色并计算试样与比色板色标的色差值。结果:Solidex树脂试样与色标间的色差值范围6.18～14.29;并且随着试样厚度减小,色差值增大。结论:在本研究中Solidex树脂试样与比色板色标的色差值较大,并且为大多数观察者所不可接受。

Objective：To evaluate the shade match of Solidex resin specimens and Vita shade tab.Methods：The study tested three shades（A1,A3,and C2）Solidex body materials in accordance with the Vita shade guide.Resin specimens were fabricated to 2.0mm thick and 10.0mm diameter.Composite resin Z100（4.0mm thick and 10.0mm diameter）,A1,A3,C2shade,were as background.The CIE L＊a＊b＊values of specimens and shade tab were measured by a colorimeter（ShadeEye NCC）to calculate the colorimetric.After colorimetric evaluations were made,the reduction and polishing process was repeated with silicon-carbide paper to achieve final thickness of Solidex resin specimens to 1.8,1.6,1.4,1.2and 1.0mm.Color differences（ΔE）were calculated between Solidex resin specimen and shade tab.Results：The color difference of resin specimens and shade tab was from 6.18to14.29.The color difference increased following the decrease of resin specimen thickness.Conclusion：Color differences in this study are unacceptable in clinical condition.