Hiraguchi Hisako, Kaketani Masahiro, Hirose Hideharu, Kikuchi Hisaji, Yoneyama Takayuki
Int J Prosthodont. 2014 Nov-Dec;27(6):567-9. doi: 10.11607/ijp.3967.
This study investigated the effects of immersion of addition silicone rubber impressions in disinfectant solutions on the surface porosity of the resulting stone casts. Five brands of type 2 and 3 addition silicone rubber impression materials and one brand of type 4 dental stone were used. Impressions of a master die designed to simulate an abutment tooth were immersed in disinfectant for 30 minutes. The disinfectants used were 2% glutaraldehyde solution and 0.55% ortho-phthalaldehyde solution. The surface porosities of stone casts obtained from two brands of impression materials immersed in disinfectant for 30 minutes were determined. Results suggest that impression materials immersed in disinfectant solutions need sufficient time before pouring into dental stone.
本研究调查了加成型硅橡胶印模浸泡在消毒溶液中对所得石膏模型表面孔隙率的影响。使用了五个品牌的2型和3型加成型硅橡胶印模材料以及一个品牌的4型牙科石膏。将一个设计用于模拟基牙的母模印模浸泡在消毒剂中30分钟。使用的消毒剂为2%戊二醛溶液和0.55%邻苯二甲醛溶液。测定了从浸泡在消毒剂中30分钟的两个品牌印模材料获得的石膏模型的表面孔隙率。结果表明，浸泡在消毒溶液中的印模材料在灌注牙科石膏之前需要足够的时间。
