Evaluation of Color-matching Ability of a Structural Colored Resin Composite
Evaluation of Color-matching Ability of a Structural Colored Resin Composite
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DOI：
10.2341/20-002-l
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发表时间：
2021-05-01
影响因子：
2.2
通讯作者：
Miyazaki, M.
中科院分区：
文献类型：
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作者：
Saegusa, M.;Kurokawa, H.;Miyazaki, M.
目的：本研究评价了结构彩色树脂复合材料的颜色匹配能力，将其与采用pigment.Methods的树脂复合材料进行比较：使用结构彩色树脂复合材料（Omnichroma [OMC]）、超纳米填充树脂复合材料（Estelite Sigma Quick [ELQ]）和纳米填充树脂复合材料（Filtek Supreme Ultra [FSU]）。将每种树脂复合材料装入特氟隆模具中，并用透明条压在载玻片下。用发光二极管固化单元通过载玻片对样本进行光照射。在转移到蒸馏水中并在37 ℃下储存24小时之前，用数字卡尺测量样品（n=6）的厚度。使用分光光度计在黑色和白色背景上测量样品的光学特性。D 65（CIE D 65）用作分光光度计的光源。在每个颜色测量条件下对每个样本重复测量三次，并计算三个相同色度样本的平均值。使用单向方差分析和Tukey事后检验（α =0.05）。为了确定其与假牙颜色匹配的能力，在进行颜色测量之前，将每种色调的树脂复合物放置在腔中。结果：OMC的光谱反射率曲线显示，无论标本的背景颜色和厚度如何，OMC都能反射430-700 nm波长的光。在550-580 nm波长范围内，ELQ的反射率降低。关于背景颜色对CIE L*、a*、B* 值的影响，L* 水平对于所有具有白色背景的测试材料显示出显著更高的值，并且OMC受背景颜色差异的影响最大。然而，ELQ和FSU的a* 值在黑色背景下比在白色背景下显著更高，并且OMC显示出在白色背景下比在黑色背景下显著更高的值。的B* 值是较高的白色背景比黑色背景，并显着较高的所有三种产品，这些趋势是更大的ELQ和FSU.Conclusions：OMC的能力，以配合人工牙齿的颜色表现出可接受的颜色兼容性，无论人工牙齿的阴影和深度的腔。然而，ELQ和FSU表现出降低的颜色兼容性，特别是对于3.0 mm的腔深度。结构着色树脂复合材料OMC证实了出色的颜色匹配能力，从而减少了色差，从而改善了修复体的美观，简化了色调匹配，并补偿了任何颜色不匹配。
Purpose: The present study evaluated the color-matching ability of a structural colored resin composite to compare it with resin composites employing pigments.Methods and Materials: A structural colored resin composite (Omnichroma [OMC]), a supranano-filled resin composite (Estelite Sigma Quick [ELQ]), and a nano-filled resin composite (Filtek Supreme Ultra [FSU]) were used. Each resin composite was packed into a Teflon mold and pressed down with a clear strip under a glass slide. The specimens were light irradiated through the slide with a light-emitting diode curing unit. The thickness of the specimens (n=6) was measured with a digital caliper before being transferred to distilled water and stored at 37 degrees C for 24 hours. The measurements of the optical characteristics of the specimens on a black-and-white background were performed using a spectrophotometer. D65 (CIE D65) was used as a light source for the spectrophotometer. Measurements were repeated three times for each specimen under each color-measurement condition, and average values for three same-shade specimens were calculated. One-way analysis of variance and Tukey post hoc tests were used (alpha=0.05). To determine its ability to match the color of artificial teeth, each shade of resin composite was placed in a cavity before performing color measurements. Using a spectrophotometer (CMS-35F S/C) with a flexible sensor, L*, a*, and b* values were obtained.Results: The spectral reflectance curve of OMC showed that it reflected light wavelengths from 430-700 nm regardless of the background color and thickness of the specimens. The percentage of reflectance of ELQ decreased near wavelengths of 550-580 nm. Regarding the influence of background color on CIE L*, a*, b* values, the L* level showed significantly higher values for all tested materials with white backgrounds, and OMC was most affected by the difference in background color. However, a* values of ELQ and FSU were significantly higher with a black background than with a white background, and OMC showed a significantly higher value with a white background than with a black background. The b* values were higher with a white background than with a black background and were significantly higher for all three products, and these tendencies were much greater for ELQ and FSU.Conclusions: The ability of OMC to match the color of artificial teeth showed acceptable color compatibility, regardless of the shade of the artificial teeth and the depth of the cavity. However, ELQ and FSU showed reduced color compatibility, especially for a cavity depth of 3.0 mm. Excellent color matching ability was confirmed for the structural colored resin composite OMC, resulting in reduced color differences and therefore improving the esthetic appearance of the restoration, simplifying shade matching, and compensating for any color mismatch.