The impression materials are essential for the fabrication of stone casts and dies. The successful impression is based on the accuracy of impression material with respect to detailed reproduction and dimensional accuracy Differences in dimensional stability, wettability, and surface hardness are seen among various elastomeric impression materials. The purpose of repouring elastomeric impression material is to evaluate the accuracy of the material between different time intervals. At two different time interval with different types of die, stones poured for vinyl siloxanther elastomeric impression and additional silicone for the study to evaluate the dimensional accuracy material. The poor reproducibility, lack of surface details, and bubbles in the cast, which may lead to an inaccurate die and a poorly fitting prosthesis due to poor incompatible materials. Method: The study involves as per American dental association specification, using a stainless steel die nearly 90 impressions were taken, out of which 45 impressions were taken by each impression material, by pouring into 3 different die stones and equally subdivided into groups of 15 each. The statistical analysis was used for ANOVA test and TUKEY' POST – HOC TEST. A Computerized coordinated measuring system was used to assess various dimensions on stone cast poured from the impression of the stainless steel model. Group A, B, C: Indentium Medium poured with Ultrarock, Elite rock, Alpenrock. Group D, E, F: Monopren Transfer poured with Ultrarock, Elite rock, Alpenrock. Results: The result shows that Addition silicone yielded less accurate cast than formulated identium (vinyl siloxane ether). Conclusion: The study concluded that presence of a certain amount of variation at a time interval (15 min and 75 min) on impression repouring, henceforth indicates that when poured immediately better accuracy is seen, and newly formulated vinyl siloxane impression material yields more accurate impressions