Schelb E, Cavazos E, Troendle K B, Prihoda T J
University of Texas, Health Science Center, San Antonio 78284-7890.
Quintessence Int. 1991 Jan;22(1):51-5.
Four polyvinyl siloxane impression materials and 14 modified Type IV dental stones were evaluated for their abilities to reproduce surface detail. Each combination of impression material and dental stone was used to duplicate a 20-microns-wide line. Surface detail reproduction was observed by two paired-rater groups. The line was reproduced in all impression material specimens, but in only 32% of the stone cast specimens. Some combinations of impression material/dental stone reproduced the line all or most of the time, but 12 combinations did not reproduce the line at all.
对四种聚乙烯基硅氧烷印模材料和14种改良IV型牙科石膏的表面细节复制能力进行了评估。印模材料和牙科石膏的每种组合都用于复制一条20微米宽的线条。由两个配对评分组观察表面细节复制情况。该线条在所有印模材料标本中都能复制出来，但在仅32%的石膏模型标本中能复制出来。印模材料/牙科石膏的某些组合在所有或大部分时间都能复制出该线条，但有12种组合根本无法复制出该线条。
