The common clinical step in dentistry is impression making. Hence an understanding of the accuracy of an impression material is important. Dental elastomeric impression materials are subject to several factors that can result in dimensional change. Accuracy of the impression is dependent on bulk of material, the conditions under which the materials are stored, the effect of temperature, the tear strength of the material, and the disinfection of impression material which are the factors demonstrated to affect the accuracy after long term immersion. So this study was planned to evaluate the dimensional stability of elastomers during cold sterilization or immersion disinfection and also to evaluate the same, along with acrylic resin trays which are used in clinical practice.