Department of Restorative Dentistry, Faculty of Dentistry, Usak University, Usak, Turkey.
Biomed Res Int. 2022 Aug 2;2022:6468281. doi: 10.1155/2022/6468281. eCollection 2022.
The aging process can induce a change in the surface microstructure of materials, the chemical compositions of matrices, and the filler particles of resin composites. This study is aimed at evaluating the effects of accelerated artificial aging (AAA) on the color change, translucency parameter (TP), and surface hardness of resin composites.
Five resin composite materials (Tetric N-Ceram, Filtek Z250, Charisma Smart, Herculite Classic, and Escom100) were evaluated. A spectrophotometer was used for color measurements (∗, ∗, and ∗). TP and color changes (Δ ) were calculated using the CIEDE2000 formula. The resin materials were subjected to aging for 300 hours. The hardness and TP values were measured before and after AAA. One- and two-way ANOVA and the Tukey test were used. The significance level was accepted as < 0.05.
Escom100 had significantly higher Δ values than the other resin composites, and Charisma Smart had significantly lower Δ values than the other tested materials ( < 0.05). Before and after AAA, Charisma Smart had the lowest TP values, and Filtek Z250 exhibited the highest hardness values ( < 0.05). For TP and surface hardness, the effect size value of the composite material was found to be higher than that of AAA.
After AAA, the investigated resin composites had Δ values that were above clinically acceptable thresholds. After aging, the tested materials generally exhibited decreases in ∗ values and ∗ values, while increases in ∗ values were observed. The TP values of the resin composites were similar. AAA significantly increased the surface hardness of the tested materials.
衰老过程会引起材料表面微观结构、基质化学成分和树脂复合材料填充颗粒的变化。本研究旨在评估加速人工老化（AAA）对树脂复合材料颜色变化、半透明度参数（TP）和表面硬度的影响。
评估了五种树脂复合材料（Tetric N-Ceram、Filtek Z250、Charisma Smart、Herculite Classic 和 Escom100）。使用分光光度计进行颜色测量（∗、∗和∗）。使用 CIEDE2000 公式计算 TP 和颜色变化（Δ）。将树脂材料进行 300 小时老化。在 AAA 前后测量硬度和 TP 值。使用单因素和双因素方差分析和 Tukey 检验。显著性水平接受为 < 0.05。
Escom100 的 Δ 值明显高于其他树脂复合材料，而 Charisma Smart 的 Δ 值明显低于其他测试材料（< 0.05）。在 AAA 前后，Charisma Smart 的 TP 值最低，Filtek Z250 的硬度值最高（< 0.05）。对于 TP 和表面硬度，复合材料的效应大小值高于 AAA。
AAA 后，研究的树脂复合材料的 Δ 值超过了临床可接受的阈值。老化后，测试材料的 ∗ 值和 ∗ 值普遍降低，而 ∗ 值增加。树脂复合材料的 TP 值相似。AAA 显著提高了测试材料的表面硬度。
