Comparative study on linear dimensional stability between condensation silicones and addition silicones using the sandwich technique

Abstract

Purpose: The study refers to the linear dimensional stability of silicone elastomers by comparing silicones with condensation curing and silicones with addition curing. Materials and Methods: The present research is represented by an "in vitro" study, interested only in the evolution of the dimensional stability of silicone elastomers in terms of the material used. A control model was created made of a hard plastic with which the existing samples were compared. The photographic documentation of each study model was made, in order to later document the differences obtained compared to the control model. Results: All photos taken were analyzed using a photo analysis software (UTHSCSA ImageTool, version 3.0). The measurement results were recorded in tables and statistically analyzed. Conclusions: The ideal material in terms of dimensional stability is represented by addition cure silicone.