摘要
目的了解不同清洁剂对赝复用硅橡胶色彩稳定性的影响,为临床选择适宜的清洁剂提供实验依据。方法制作直径20 mm高5 mm的MDX4-4210硅橡胶和加入0.5%硅铝烷包覆的纳米TiO2的MDX4-4210硅橡胶试件各20个,随机分5组,每组4个,编号后,分别采用23℃150 ml的自来水(A组,为对照组)、假牙清洁片(B组)、洗洁精(C组)、洗手液(D组)、洗衣液(E组)浸泡15 min,自来水冲洗1 min,滤纸拭干,如此重复180次,至45 h。在浸泡前、7.5、15、22.5、30、37.5和45 h时,采用VITA Easyshade Compact测色仪测量试件的色度值,计算色差值△E。结果各种清洁剂对纯硅橡胶色彩稳定性的影响,A、B、C组优于D和E组;对添加纳米TiO2的硅橡胶的影响,B、C、D、E组优于A组;随着时间的变化,只有洗手液对硅橡胶色彩稳定性有影响,且发生在早期;添加纳米TiO2的硅橡胶的色彩稳定性变化较纯硅橡胶少。结论假牙清洁片和洗洁精对赝复硅橡胶色彩稳定性影响最小;色彩稳定性变化发生在早期;纳米TiO2可减少清洁剂对赝复硅橡胶色彩稳定性的影响。
Objective To understand the effects of different cleaners on the color stability of silicon rubber used for maxillofacial prosthesis, and to provide recommendations for clinical selection of proper cleaner. Methods Twenty test pieces of MDX4 - 4210 pure silicone rubber with the diameter of 20 mm and height of 5 mm and twenty ones with nano - TiO2 coated by 0.5% silicon aluminum alkyl were prepared. They were paired and randomly divided into 5 groups with 4 ones in each group. After the numbering, those pieces were soaked respectively in 150 ml tap water at the temperature of 23 ℃ （control group）, denture cleaner tablet solution （group B）, liquefied detergent （group C ）, washing hand liquid （group D）, and laundry detergent （group E）for 15 minutes. Then they were flushed by the tap water for 1 minute and dried by filter paper,which was repeated for 180 times until the time at 45 h. Before the immersion and after the immersion for 7.5,15,22.5,30,37.5, and 45, the chromatic values of those pieces were detected by VITA Easyshade Compact color measurement instrument,and the chromatic aberration values were calculated. Results As to the effects of different cleaners on the color stability of silicon rubber, group A, B, and C were superior to group D and E ; as to the effects on the silicone rubber with nano - TiOE,group B, C, D, and E were superior to group A. Along with the changing of time, only washing hand liquid had effects on the color stability of the silicone rubber, which took place in the early stage. The changes in the color stability of the silicone rubber with nano - TiO2 were less than those of the pure sihcon rubber. Conclusion The denture cleaner tablet and liquefied detergent have the smallest effect on the color stability of silicone rubber. The color stability changes take place in the early stage. Nano - TiO2 can reduce the effects of cleaner on the color stability of silicone rubber.
出处
《西南国防医药》
CAS
2013年第1期32-35,共4页
Medical Journal of National Defending Forces in Southwest China
关键词
清洁剂
赝复用硅橡胶
色彩稳定性
cleaner
silicon rubber used for maxillofacial prosthesis
color stability
