Color compatibility of resin composites of identical shade designation.
Color compatibility of resin composites of identical shade designation.
复制标题
相同颜色名称的树脂复合材料的颜色兼容性。
作者：
R. Paravina;Miki Kimura;J. Powers
目的
本研究的目的是评价与Vitapan Classical比色板（Vita）相匹配的相应树脂复合比色板的颜色相容性。
方法和材料
分析了6种商业树脂复合材料的21种色调。使用圆柱形模具将样本（n = 5）制成直径为11 mm且厚度为2 mm的圆盘。根据制造商的建议，使用光固化单元聚合样品。使用分光光度计收集数据，并使用适当的色差度量方程进行分析。大于或等于3.7的总色差（Δ E *ab）被认为是不匹配。方差分析和Fisher概率最小二乘差异（PLSD）检验。在0.05的显著性水平下计算平均值比较的间隔。
结果
A2、B2、C2和不透明A2色度对之间的平均deltaE*ab值分别为4.4（1.8）、7.3（3.2）、5.6（2.8）和6.5（1.8），而比较的所有对的平均色差为5.8（2.8）。对于A2色度，deltaL*、deltaa*ab和deltab*ab值的范围分别为5.3、2.3和6.7。B2色度的相应值范围为10.5、2.2和11.5; C2色度为7.9、2.2和4.3;不透明A2色度为7.9、1.4和4.4。Fisher's PLSD临界区间用于比较阴影和复合对之间的deltaE*ab值分别为0.07和0.15（P <0.0001，功效1.00）。
结论
总的来说，记录了相同色调名称的色调对的颜色相容性差。记录了A2色度对的最佳颜色匹配，其次是C2、B2和不透明A2色度对。
OBJECTIVE
The aim of this study was to evaluate color compatibility of corresponding resin composite shades keyed to Vitapan Classical shade guide (Vita).
METHOD AND MATERIALS
Twenty-one shades of 6 commercial resin composites were analyzed. Specimens (n = 5) were made as disks, 11 mm in diameter and 2 mm thick, using cylindrical molds. Specimens were polymerized according to manufacturers' suggestions using a light-curing unit. Data were collected using a spectrophotometer and analyzed using the appropriate color difference metric equations. A total color difference (deltaE*ab) greater than or equal to 3.7 was considered a mismatch. Analysis of variance and Fisher's probable least-squares difference (PLSD) test. intervals for comparison of means were calculated at the .05 level of significance.
RESULTS
Mean deltaE*ab values among A2, B2, C2, and opaque A2 shade pairs were 4.4 (1.8), 7.3 (3.2), 5.6 (2.8), and 6.5 (1.8), respectively, while the mean color difference for all the pairs compared was 5.8 (2.8). For A2 shades, deltaL*, deltaa*ab, and deltab*ab values ranged by 5.3, 2.3, and 6.7, respectively. Corresponding values for B2 shades ranged by 10.5, 2.2, and 11.5; 7.9, 2.2, and 4.3 for C2 shades; and 7.9, 1.4, and 4.4 for opaque A2 shades. Fisher's PLSD critical intervals for comparing deltaE*ab values among the shades and composite pairs were 0.07 and 0.15, respectively (P < .0001, power 1.00).
CONCLUSION
Overall, poor color compatibility of shade pairs of identical shade designation was recorded. The best color match was recorded for A2 shade pairs, followed by C2, B2, and opaque A2 shade pairs.