大块充填可流动树脂复合材料人工老化后的颜色稳定性

Color Stability of Bulk-Fill Flowable Resin Composites After Artificial Aging.

作者信息

Floriani Franciele, Jurado Carlos A, Madhu Nikkita, Lackey Mark A, Azpiazu-Flores Francisco X, Lopes Guilherme Carpena

机构信息

Department of Prosthodontics, The University of Iowa College of Dentistry, Iowa City, IA 52241, USA.

Department of General Dentistry, The University of Tennessee Health Science Center College of Dentistry, Memphis, TN 38103, USA.

出版信息

Dent J (Basel). 2024 Oct 31;12(11):350. doi: 10.3390/dj12110350.

DOI:10.3390/dj12110350

PMID:39590400

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11592736/

Abstract

BACKGROUND

This study aimed to evaluate the color stability of bulk-fill flowable resin composites with 2 difference shades at baseline and after artificial aging.

METHODS

Disk-shaped specimens (Ø10 × 4 mm) were fabricated from three bulk-fill flowable resin resin composites (Filtek Bulk-Fill Flow, Venus Bulk-Fill Flow, and Estelite Bulk-Fill Flow). The specimens in each bulk-fill resin composite group were divided into two subgroups (n = 10 per subgroup) with two different shades, A1 (N = 30) and A3 (N = 30), and were polymerized with light curing (800 mW/cm/Valo LED Unit, Ultradent) and polished. The color difference between bulk-fill resin composites was evaluated at baseline and after artificial aging using a spectrophotometer (CM-700d, Konica Minolta, Tokyo, Japan) under D65 illumination. Color coordinates were measured with CIEDE2000, and color differences (∆E) and relative translucency parameter (RTP) values were calculated. Subsequently, the comparison of color changes (∆E) before and after thermocycling was performed using the -test for paired samples.

RESULTS

The bulk-fill flow resin composites evaluated in the present study were capable of mimicking important optical properties such as light transmission. All the resin composites provided acceptable color stability at baseline and after thermocycling when the color A1 was used. On the other hand, whenever the shade A3 was used, the Venus Bulk-Fill Flow demonstrated the best optical properties. There was no statistically significant difference when comparing baseline and after thermocycling in bulk-fill flowable resin composites ( > 0.05). After thermocycling, A1 bulk-fill flowable resin composites provided acceptable color stability, and all A3 bulk-fill flowable resin composites provided visible color change, except for the Venus Bulk-Fill Flow (∆E = 2.35).

CONCLUSIONS

Estelite Bulk-Fill Flow displayed the best color stability (∆E = 2.22) between all the combinations evaluated.

摘要

背景

本研究旨在评估两种不同色度的大块充填可流动树脂复合材料在基线期及人工老化后的颜色稳定性。

方法

用三种大块充填可流动树脂复合材料（Filtek Bulk-Fill Flow、Venus Bulk-Fill Flow和Estelite Bulk-Fill Flow）制作圆盘形试件（直径10×4毫米）。每个大块充填树脂复合材料组的试件按两种不同色度分为两个亚组（每组n = 10），即A1（n = 30）和A3（n = 30），经光固化（800 mW/cm/Valo LED光固化机，Ultradent）聚合及抛光处理。在D65照明条件下，使用分光光度计（CM - 700d，柯尼卡美能达，东京，日本）在基线期及人工老化后评估大块充填树脂复合材料之间的颜色差异。用CIEDE2000测量颜色坐标，并计算颜色差异（∆E）和相对透明度参数（RTP）值。随后，采用配对样本t检验对热循环前后的颜色变化（∆E）进行比较。

结果

本研究中评估的大块充填可流动树脂复合材料能够模拟诸如透光性等重要光学性能。当使用A1色时，所有树脂复合材料在基线期及热循环后均具有可接受的颜色稳定性。另一方面，每当使用A3色时，Venus Bulk-Fill Flow表现出最佳光学性能。比较大块充填可流动树脂复合材料在基线期和热循环后的情况时，差异无统计学意义（P>0.05）。热循环后，A1大块充填可流动树脂复合材料具有可接受的颜色稳定性，除Venus Bulk-Fill Flow（∆E = 2.35）外，所有A3大块充填可流动树脂复合材料均出现明显颜色变化。