Chia W K, Stevens L, Basford K E, Randell D M
Department of Restorative Dentistry, University of Queensland.
Aust Dent J. 1990 Feb;35(1):23-6. doi: 10.1111/j.1834-7819.1990.tb03022.x.
The volume of impressions, before and after disinfection in a gluteraldehyde solution for longer than ten hours (that is, sterilization), was measured indirectly from dies produced from the impressions. Three elastomeric impression materials were used in both acrylic resin and poly-vinyl-chloride 'trays' to form the impressions. One impression material appeared to be practically superior to the others with respect to variability of volume. The effect of tray material on change in volume (calculated as after disinfection minus before disinfection) was significant for one impression material; acrylic trays produced the greatest effect. The change in volume was significant for two impression materials; acrylic trays were associated with greater increase in volume. It was concluded that if impressions are to be sterilized, a tray material having minimal potential to absorb disinfectant should be used.
通过从印模制作的模型间接测量在戊二醛溶液中消毒超过十小时（即灭菌）前后印模的体积。在丙烯酸树脂和聚氯乙烯“托盘”中使用三种弹性体印模材料来制作印模。就体积变异性而言，一种印模材料似乎实际上优于其他材料。托盘材料对一种印模材料的体积变化（计算为消毒后减去消毒前）有显著影响；丙烯酸托盘产生的影响最大。两种印模材料的体积变化显著；丙烯酸托盘与更大的体积增加相关。得出的结论是，如果要对印模进行灭菌，应使用吸收消毒剂可能性最小的托盘材料。
