A three-dimensional finite element analysis of removable partial denture restoration: a comparison study of the combined impression versus the traditional open impression techniques.

Abstract

This study aimed to evaluate the mechanical behavior of a removable partial denture (RPD) using a new technique of impression-the combined impression technique (CIT)-via three-dimensional finite element analysis (FEA). A patient was selected to have removable partial dentures fabricated using CIT and the open-mouth impression technique (OIT), and the results were compared through FEA. Compared to OIT, CIT resulted in lower von Mises stresses on abutment teeth and alveolar ridges, with no significant stress concentrations and more balanced mucosal displacement in edentulous areas. CIT proved promising as it presented more favorable results than OIT in this simulation.