Resumen de Stress Distribution Study Using the Finite Element Method in Three Different Implant-Supported Fixed Complete-Arch Mandibular Prostheses

Luiz Felipe Butzke Coelho, Márcio L. Grossi, Josué Ricardo Broilo, Evandro Afonso Sartori, Tomás Geremia, Luiz Oscar Honorato Mariano, Leonardo Barcellos, Rosemary S.A. Shinkai, Leandro Luis Corso

• Purpose: The objective of this study was to assess the stress distribution generated by a simulated loading (100 N) in the area of the cantilever in three different five-implant mandibular protocol prosthesis models.

  Materials and Methods: The finite element analysis was carried out in three-dimensional models simulating: (1) a temporary allacrylic resin mandibular protocol prosthesis; (2) a metal-acrylic mandibular protocol prosthesis; and (3) a metal-ceramic mandibular protocol prosthesis.

  Results: The allacrylic model promoted the highest stress values on the implant closest to the cantilever loading point.

  Conclusion: This study supports the need for a metallic bar reinforcement in the denture base.