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The effects of sterilization on addition silicone impressions in custom and stock metal trays
P S Olin1, J R Holtan, R S Breitbach
1Division of Prosthodontics, University of Minnesota, School of Dentistry, Minneapolis.
The Journal of Prosthetic Dentistry
|June 1, 1994
Abstract:
Five groups of addition silicone impressions (four made in custom autopolymerizing acrylic resin trays and one in stock metal rim-lock trays) were made of a stainless-steel master die. The first group (control group) was not sterilized. The second group was sterilized in an ethylene oxide gas autoclave, the third group in a steam autoclave, and the fourth and fifth groups by immersion for 12 hours in 2% glutaraldehyde. Casts made from each sterilization group were found to be significantly different from control impressions by multivariate analysis of variance and should not be used to fabricate prostheses.