Bankoğlu Güngör Merve, Kaynak Öztürk Esra, Karakoca Nemli Seçil, Turhan Bal Bilge
Associate Professor, Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Türkiye.
Research Assistant, Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Türkiye.
J Prosthet Dent. 2025 Apr;133(4):1104-1108. doi: 10.1016/j.prosdent.2023.05.013. Epub 2023 Jun 17.
Silicone elastomers are considered the most favorable materials for the prosthetic rehabilitation of facial defects. However, color change, because of the ultraviolet (UV) light, limits the life of facial prostheses. The addition of 2-ethylhexyl salicylate as a UV-protective may improve the color stability of different maxillofacial silicone elastomers.
The purpose of this in vitro study was to evaluate the effect of 2-ethylhexyl salicylate on the color stability of 3 different maxillofacial silicone elastomers after outdoor weathering.
Three different ratios of UV-protective 2-ethylhexyl salicylate (UV-ES) were incorporated into 3 different types of maxillofacial silicones (M511, TechSil S25, and A-2000) in 1%, 2%, and 5% ratios, and a control group for each silicone was generated. A total of 120 Ø15×2-mm disk-shaped specimens were prepared from 3 different silicone elastomers according to the 4 different UV-ES ratio groups (n=10). The specimens were subjected to outdoor weathering in Ankara, Türkiye, from June 2021 to June 2022. Color differences in the specimens were measured at 3 months and 1 year of weathering. The color change values (ΔE) were statistically analyzed by using repeated measures of 3-way ANOVA. The differences were compared by using the Tukey honest significant difference test (α=.05).
No interaction was found among the factors (silicone type, UV-ES ratio, and aging) (P=.29). The highest ΔE values were found in TechSil S-25 (P<.001), while the results were not significantly different between the M511 and A2000 groups (P=.324) The higher ΔE values were found in the control group when compared with those of the UV-ES added group of each material, while the results were not significantly different among the 1%, 2%, and 5% groups (P>.05).
Incorporating 2-ethylhexyl salicylate into the tested maxillofacial silicones reduced color change.
硅橡胶被认为是面部缺损修复假体最适宜的材料。然而，由于紫外线（UV）照射导致的颜色变化限制了面部假体的使用寿命。添加2-乙基己基水杨酸酯作为紫外线防护剂可能会改善不同颌面硅橡胶的颜色稳定性。
本体外研究的目的是评估2-乙基己基水杨酸酯对3种不同颌面硅橡胶在户外老化后的颜色稳定性的影响。
将三种不同比例的紫外线防护剂2-乙基己基水杨酸酯（UV-ES）按1%、2%和5%的比例加入到3种不同类型的颌面硅橡胶（M511、TechSil S25和A-2000）中，为每种硅橡胶设立一个对照组。根据4种不同的UV-ES比例组，从3种不同的硅橡胶中制备出总共120个直径为15×2毫米的圆盘形试样（n = 10）。这些试样于2021年6月至2022年6月在土耳其安卡拉进行户外老化。在老化3个月和1年时测量试样的颜色差异。使用三因素重复测量方差分析对颜色变化值（ΔE）进行统计分析。采用Tukey真实显著性差异检验比较差异（α = 0.05）。
未发现各因素（硅橡胶类型、UV-ES比例和老化）之间存在交互作用（P = 0.29）。TechSil S-25的ΔE值最高（P < 0.001），而M511组和A2000组之间的结果无显著差异（P = 0.324）。与每种材料添加UV-ES的组相比，对照组的ΔE值更高，而1%、2%和5%组之间的结果无显著差异（P > 0.05）。
在受试的颌面硅橡胶中加入2-乙基己基水杨酸酯可减少颜色变化。
