Comparative photoelastic stress analysis between All-on-four-implant supported Cobalt-chromium framework and Carbon fiber reinforced framework with varying cantilever lenghts-An Vitro study..

Abstract

STATEMENT OF PROBLEM In implant prosthodontics, metal frameworks are used to rigidly spilt the implants together to provide rigidity and stiffness to the prosthesis and reduce possible complications such as prosthetic fracture. However, due to the limitations associated with the metal framework fabrication; the recent advances and improvements in fiber reinforced materials, has now made it possible to fabricate metal free ISPs using fiber reinforced composite frameworks. PURPOSE The purpose of this study was to evaluate and compare photoelastic stresses between All- on-four implant-supported cobalt-chromium (Co-Cr) framework and carbon fiber reinforced composite (CFRC) framework at varying cantilever lengths.