Santos Heloisa RB, ÃÂvila Gisseli B, Carvalho Geraldo AP, Ramos ElimÃÂ¡rio V, Franco Aline BG, Franco Amanda G, Dias Sergio C
This study uses the finite element method to assess the biomechanical behavior of tooth-supported fixed partial prostheses
components manufactured with two different infrastructures: Cr-Co Fit Flex metallic alloy and Polyether Ether Ketone (PEEK)
subjected to physiological occlusal loads.
Two models with equal geometry were simulated-Model M1: fixed partial prosthesis with Cr-Co metallic infrastructure and feldspar
ceramics coating Noritake Ex-3; Model M2: fixed partial prosthesis with PEEK infrastructure PEEK and indirect resin coating
Sinfony. They were subjected to axial and oblique loads. The 3D models were entered in the software CAD Solidworks 2016 for
registry and analysis.
Data were analyzed according to the studied factors: dentin behavior, infrastructure, aesthetic coating, detachment pressure between
tooth and cement, and tensile stress of cement. Most stress peaks were observed in model M2, but values from the two models were
Model M1 showed better results in four of the factors: dentin, infrastructure, detachment pressure between tooth and cement, and
cement tensile stress. Model M2 showed better performance in terms of the aesthetic coating. Similar values for both models in
most of the simulations suggest a long lifespan of both treatments, although longer for model M1.
Published Date: 2019-06-30;