›› 2016, Vol. 36 ›› Issue (4): 350-353.

• 基础研究 • 上一篇    下一篇

不同厚度硅铝包覆纳米TiO2盖膜对赝复体硅橡胶色彩稳定性的影响

占适龙,江银华,刘伟东,叶建青   

  1. 丽水市人民医院口腔医院
  • 收稿日期:2015-02-04 修回日期:2015-03-31 出版日期:2016-04-28 发布日期:2016-04-24
  • 通讯作者: 占适龙 E-mail:87545121@qq.com
  • 基金资助:
    自然老化下硅铝包覆纳米TiO2膜对MDX4-4210硅橡胶色彩稳定性影响的基础研究

Effects of nano-TiO2 membrane caps coated by silica alumina at different thickness on the color stability of prosthesis silicone elastomer

  • Received:2015-02-04 Revised:2015-03-31 Online:2016-04-28 Published:2016-04-24

摘要: 目的 研究不同厚度硅铝包覆纳米TiO2硅橡胶盖膜对MDX4-4210 赝复体硅橡胶褪色过程的影响,探讨此方法对提高颜面赝复体硅橡胶色彩稳定性的有效性,并提供理论基础。方法 模拟日光老化条件下,以MDX4-4210 硅橡胶为基质,硅铝包覆纳米 TiO2为遮色剂,镉红油画颜料为着色剂,观察比较高浓度镉红油画颜料硅橡胶主体加盖不同厚度(0、0.5、1.0 mm)硅铝包覆纳米TiO2硅橡胶膜试件老化前后L*a*b*值。结果 不同厚度0.1%硅铝包覆纳米TiO2盖膜的试件ΔE、Δa随着厚度的增加ΔE、Δa逐渐减小,即总色差、红色褪色逐渐减小,有显著性差异(P<0.05)。而ΔL,Δb随着厚度的增加逐渐增大,即变暗、变黄的程度逐渐增大,有显著性差异(P<0.05)。结论 加盖不同厚度硅铝包覆纳米TiO2硅橡胶膜的方法对延缓赝复体硅橡胶褪色具有一定的作用,为提高赝复体硅橡胶色彩稳定性提供了新思路。

关键词: 硅橡胶, 赝复体, 遮色剂, 纳米TiO2

Abstract: Objective To study the color stability of prosthesis silicone elastomer covered by nano-TiO2 membrane caps coated by silica alumina at different thickness, and to explore the effectiveness of this method on improving the color stability of facial prostheses silicone rubber, as well as to provide a theoretical basis. Methods Using MDX4-4210 silicone elastomer as substrate, nano-TiO2 coated with Si and Al as masking agent, and cadmium red oil paint as coloring agent, L*a*b* values of nano-TiO2 membrane cap specimen coated by silica alumina at different thickness (0, 0.5, 1.0 mm) before and after aging were observed. Results 0.1% silica-alumina-coated nano-TiO2 membrane cap specimen ΔE, Δa gradually decreased as the thickness increased (P<0.05), while ΔL, Δb gradually increased as thickness increased (P<0.05). Conclusion Coating nano-TiO2 membrane caps with silica alumina at different thickness played a role in delaying the fading of prosthesis silicone elastomer, which provided inspiration for improving the color stability of silicone elastomer prosthesis.

Key words: silicone elastomer, prosthesis, opacifiers , nano-TiO2

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