Eames W B, Sieweke J C, Wallace S W, Rogers L B
J Prosthet Dent. 1979 Mar;41(3):304-7. doi: 10.1016/0022-3913(79)90013-1.
Impression trays were fabricated providing 2, 4, and 6 mm spaces to determine the stability and accuracy of nine elastomeric impression materials on a simulated full crown preparation steel die. The interface space of 2 mm produced the most accurate impressions for all of the materials tested. All impression materials except one fell within the revised American Dental Association Specifications. The clinical-type tests, using castings on dies poured from these materials, corroborated the acceptance of those materials and techniques exhibiting the least dimensional change.
制作了提供2毫米、4毫米和6毫米间隙的印模托盘，以确定9种弹性印模材料在模拟全冠预备钢模上的稳定性和准确性。2毫米的界面间隙对所有测试材料产生了最精确的印模。除一种材料外，所有印模材料均符合修订后的美国牙科协会规范。使用从这些材料灌注的模型上制作的铸件进行的临床类型测试，证实了对那些尺寸变化最小的材料和技术的认可。
