Chang Joseph, Lim Bum-Soon, Chung Shin Hye, Moon Wonjoon
Department of Dental Biomaterials Science and Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, South Korea.
BMC Oral Health. 2025 Mar 18;25(1):402. doi: 10.1186/s12903-024-05233-2.
This study aims to evaluate the influence of opalescence in the color matching ability of dental composites.
Single-disc samples were prepared using 10 commercially available composites (6 conventional, 3 simplified-shade, and 1 single-shade). Dual-color samples were created using Omnichroma, Ceram.X Sphere TEC (A3 shade), and DenFil (B2/C2 shade), with various cavity diameters in the center, which were then filled with the aforementioned 10 composites. Additionally, single-color samples were prepared using the 4 base composites mentioned above. The ΔE were calculated as differences between single and dual samples. The color coordinates (CIE Lab) of the samples were measured using a spectrophotometer. The results of translucency parameters (TP) and opalescence parameters (OP) of the 10 composites were compared with ΔE measurement samples.
TP and OP generally had a linear correlation, and ΔE mostly increased with cavity diameter. Regarding the correlation between ΔE and TP, little correlation was observed in the conventional composite bases, but higher correlations were observed in the simplified- or single-shade composite bases. Regarding the correlation between ΔE and OP, inverse correlations were observed in the conventional composite bases and simplified composite bases, but the single-shade composite base showed the linear correlations with OP.
These findings highlight a potentially greater role for opalescence in the color matching ability of dental composites than previously acknowledged.
本研究旨在评估乳光对牙科复合材料颜色匹配能力的影响。
使用10种市售复合材料（6种传统型、3种简化色型和1种单一色型）制备单盘样本。使用Omnichroma、Ceram.X Sphere TEC（A3色）和DenFil（B2/C2色）制作双色样本，样本中心有不同的窝洞直径，然后用上述10种复合材料填充。此外，使用上述4种基础复合材料制备单色样本。计算单样本和双样本之间的差异作为ΔE值。使用分光光度计测量样本的颜色坐标（CIE Lab）。将10种复合材料的透明度参数（TP）和乳光参数（OP）的结果与ΔE测量样本进行比较。
TP和OP通常呈线性相关，且ΔE大多随窝洞直径增加。关于ΔE与TP的相关性，在传统复合材料基础中观察到的相关性较小，但在简化色型或单一色型复合材料基础中观察到较高的相关性。关于ΔE与OP的相关性，在传统复合材料基础和简化复合材料基础中观察到负相关，但单一色型复合材料基础与OP呈线性相关。
这些发现突出了乳光在牙科复合材料颜色匹配能力中可能比以前认识到的发挥更大的作用。
