Yap A U, Tan K B, Bhole S
National University of Singapore, Faculty of Dentistry, Singapore.
Oper Dent. 1997 Jul-Aug;22(4):167-72.
The objective of this study was to compare the aesthetic properties of color and translucency of Vita shade-based tooth-colored restorative materials, including composite resins, a polyacid-modified composite resin, and resin-modified glass-ionomer cements via clinical discrimination by human evaluators. The hue/chroma, value, and translucency of the five different materials chosen to represent the range of commercially available tooth-colored restoratives were graded by 40 dental personnel against the body of their respective Vita shade tabs using a five-point scale (1 = very poor; 2 = poor; 3 = average; 4 = good; 5 = excellent). Results confirm the clinical observation that the hue/chroma, value, and translucency of the different materials evaluated do not match the Vita shade guide to which they are supposedly keyed. The aesthetic properties of hue/ chroma, value, and translucency for the material evaluated were all shade dependent. Comparison of pooled results revealed that none of the materials had good or excellent ratings and that the composite resins had significantly better hue/ chroma, value, and translucency match to the Vita shade guide than the other materials evaluated.
本研究的目的是通过人类评估者的临床辨别，比较基于Vita比色板的牙齿颜色修复材料的颜色和透明度美学特性，这些材料包括复合树脂、聚酸改性复合树脂和树脂改性玻璃离子水门汀。选择了五种不同的材料来代表市售牙齿颜色修复材料的范围，40名牙科人员使用五点量表（1 = 非常差；2 = 差；3 = 一般；4 = 好；5 = 优秀），对照各自的Vita比色板对其色调/彩度、明度和透明度进行评分。结果证实了临床观察结果，即所评估的不同材料的色调/彩度、明度和透明度与它们所对应的Vita比色板不匹配。所评估材料的色调/彩度、明度和透明度美学特性均取决于色阶。汇总结果的比较显示，没有一种材料获得良好或优秀的评级，并且复合树脂与其他评估材料相比，在色调/彩度、明度和透明度与Vita比色板的匹配度方面明显更好。
