Estudo comparativo de sistemas de implantes para mandíbulas edêntulas com carga imediata, utilizando o Método dos Elementos Finitos

Abstract

The present study aimed at obtaining comparative elements among the guided systems of fixed complete denture with 4 osseointegrated implants with immediate loading. The three-dimensional finite element method was used to analyze the stress concentrations in the whole implant-supported system. Two systems were analyzed, one with cantilever and another without it, but with tilted implants, submitted to a vertical load of 756N on the superior face of the prosthetic implant-supported bar. The data found were compared and assessed according to values obtained in the literature. The results demonstrated that the use of tilted implants avoiding the use of cantilever reduced considerably the stress levels in the prosthetic bar and in the abutments. However, in the implant-bone area an increase of approximately 1.5 times in stress levels was observed, compared to the straight implant under cantilever.