Burrell C J, Russell M D, Stewart J
Oral Surgery Department, York District Hospital, England.
J Prosthet Dent. 1991 Mar;65(3):408-13. doi: 10.1016/0022-3913(91)90233-m.
The dimensional inaccuracies that might be introduced during a wash impression technique within a heat-cured acrylic resin tray lined with a silicone resilient denture base material were investigated with the use of an electronic digitizer. Casts were poured from impressions of a machined metal die using a light- and heavy-bodied addition silicone in the soft-lined tray and compared with casts poured from impressions made in a hard-based tray and with the master die itself. The dimensions of the casts poured from the heavy-bodied impression in the soft-lined trays were significantly different from those poured from impressions in the hard-based tray when compared with the metal die. Those produced from the light-bodied material showed no statistically significant dimensional difference.
使用电子数字化仪研究了在衬有硅橡胶弹性义齿基托材料的热固化丙烯酸树脂托盘内进行冲洗印模技术时可能出现的尺寸误差。在软衬托盘内使用轻体和重体加成型硅橡胶从加工过的金属模具印模中灌注铸型，并与从硬基托盘印模中灌注的铸型以及母模本身进行比较。与金属模具相比，从软衬托盘内重体印模灌注的铸型尺寸与从硬基托盘印模灌注的铸型尺寸有显著差异。由轻体材料制作的铸型尺寸在统计学上无显著差异。
