This article is focused on the statistical comparison of the original and replicated surface. Surface replication has been used for a long time, but recently a material with the commercial name Dentacryl™ has been used for the replication. However, this material has some disadvantages that outweigh the benefits. The article focuses on the use of Siloflex© dental impression material that is very sensitive to the detailed control. It also uses the non-contacting profile of Talysurf CLI 500, where initial parameters of the roughness (Ra, Rz, Rp, Rv and Rt) were recorded both on the original surface and on the replicated surface. These parameters are then compared using statistical methods such as K- means Clustering, PCA, and Factor Analysis.