摘要
目的 :评价 3种改良型亲水性硅橡胶印模材料经 4种常用消毒液不同时间浸泡处理后其表面润湿性的变化。方法 :对每一种材料 ,各制取 80个相同的印模 ,以 2 0个为一组分别接受 2 %碱性戊二醛、0 .5 %碘伏、0 .0 2 %二氧化氯、5 .2 5 %次氯酸钠的浸泡处理。在每个处理组的 2 0个印模中 ,5个不做处理作为对照组 ,15个接受浸泡处理作为实验组 :以 5个为一组分别浸泡 10min、30min、6 0min ,处理完毕后用液滴法测其接触角 ,比较各材料处理前后接触角的变化。结果 :所有材料经浸泡 10min、30min、6 0min后 ,其接触角与处理前接触角相比 ,均有所增大 ,在统计学上有显著性差异 (P <0 .0 5 )。结论 :3种改良型亲水性硅橡胶印模材料经 4种消毒液不同时间浸泡处理后 。
Objective:To evaluate the changes in the wettability of 3 types of modified hydrophilic silicone rubber impression materials after immersion in 4 kinds of disinfectant solutions in different time interval.Methods:The same 80 impressions were made respectively for each type of impression material.80 impressions were divided into 4 groups and were treated with 2% alkaline glutaraldehyde , 0.5% iodophor, 0.02% chlorine dioxide , 5.25% sodium hypochlorite , respectively. In each group 5 were left untreated as control , 15 were treated: every 5 impressions were immersed for 10 min, 30 min and 60 min , respectively. The contact angles were measured through the Sessile drop method before and after treatment.The changes of the contact angles were evaluated.Results:For each type of impression material , the contact angles increased significantly after immersion for 10 min, 30 min and 60 min , respectively (P<0.05).Conclusions:The wettability of 3 types of modified hydrophilic silicone rubber impression materials decreased after immersion in 4 kinds of disinfectant solutions.
出处
《口腔医学研究》
CAS
CSCD
2004年第1期53-55,共3页
Journal of Oral Science Research
关键词
消毒
改良型硅橡胶印模
润湿性
印模材料
Disinfection Impression material Silicone rubber Wettability
