Cho G C, Donovan T E, Chee W W, White S N
Department of Restorative Dentistry, School of Dentistry, University of Southern California, Los Angeles, USA.
J Prosthet Dent. 1995 May;73(5):419-23. doi: 10.1016/s0022-3913(05)80068-x.
Time-dependent bond strength studies of two polyvinyl siloxane impression materials to acrylic resin disks with their respective adhesives were studied to determine the optimal time for maximum bond strength. Six groups were tested with varying adhesive dry times of 0, 7, 15, and 60 minutes and 8 and 24 hours before testing. The results indicated that the bond strength of the adhesive increased at least twofold from time zero to 7 minutes adhesive dry time and peaked at 60 minutes for one of the materials and at 8 hours for the other. Bond strengths increased rapidly to the 15-minute test interval and then seemed to plateau. Both materials exhibited decreased adhesive bond strengths at 24 hours.
研究了两种聚乙烯基硅氧烷印模材料与带有各自粘合剂的丙烯酸树脂盘之间随时间变化的粘结强度，以确定获得最大粘结强度的最佳时间。测试了六组，在测试前分别有0、7、15和60分钟以及8和24小时的不同粘合剂干燥时间。结果表明，对于其中一种材料，粘合剂的粘结强度从时间为零时到粘合剂干燥7分钟时至少增加了两倍，并在60分钟时达到峰值；对于另一种材料，则在8小时时达到峰值。粘结强度在15分钟测试间隔时迅速增加，然后似乎趋于平稳。两种材料在24小时时的粘结强度均下降。
