摘要
目的研究不同厚度硅铝包覆纳米Ti O_2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Ti O_2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Ti O_2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Ti O_2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Ti O_2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。
Objective To study the color stability of prosthesis silicone elastomer covered by nano-Ti O_2 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-Ti O_2coated with Si and Al as masking agent,and cadmium red oil paint as coloring agent,L＊ a＊ b＊ values of nano-Ti O_2 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-aluminacoated nano-Ti O_2 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-Ti O_2 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.
出处
《口腔医学》
CAS
2016年第4期350-353,共4页
Stomatology
基金
丽水市公益性技术应用项目(2013JYZB45)
