摘要
目的研究不同浓度硅铝包覆纳米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,观察老化前后加盖1 mm厚度、不同浓度(0、0.05%、0.10%、0.15%)硅铝包覆纳米TiO2硅橡胶膜试件的L*a*b*值。结果 4种浓度硅铝包覆纳米TiO2盖膜试件中,ΔE、ΔL*、Δa*、Δb*值随着硅铝包覆纳米Ti O2浓度升高逐渐降低,0.10%组最低,但0.15%组时升高,各浓度组之间有显著性差异(P<0.05)。结论加盖不同浓度硅铝包覆纳米Ti O2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 different concentrations of silica alumina coated nano-TiO2 membrane cap,and to improve the effectiveness of facial prostheses silicone rubber color stability with this method so as to provide a theoretical basis. Methods 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 specimen were observed when stamped with 1mm thickness,different concentrations（ 0,0. 05%,0. 10%,0. 15%） of silica alumina nano-TiO2 coated silicone rubber membrane before and after aging. Results As the concentration of silica alumina coated nano-TiO2 decreased,ΔE,ΔL＊,Δa＊,Δb＊ values of 0. 10% group were the lowest,but the those of 0. 15% group increased,and there was a significant difference between groups（ P〈0. 05）. Conclusions Coating nano-TiO2 membrane cap with different concentrations of silica alumina has a certain role in delaying fade prosthesis silicone elastomer,which provides a new idea for improving color silicone elastomer prosthesis stability.
出处
《口腔医学》
CAS
2015年第8期628-631,共4页
Stomatology
