HOW IMPORTANT ARE THE IMPLANT INCLINATION AND THE INFRASTRUCTURE MATERIAL USED IN IMPLANT SUPPORTED FIXED PROSTHESES?

Objectives: The aim of this study is to evaluate the stress , which caused by fixed prosthesis under oblique forces around dental implants and bone using different infrastructure materials inclusions, 3-dimensional finite element analysis method. Materials Methods: 3D models mandible, prostheses were prepared. anterior posterior designed 10 mm in length 4.3 diameter. implant was placed parallel each model. Posterior make inclinations those mesial 17, distal buccal lingual 17. Implant supported restorations divided into 3 main groups according materials. These were; chromium-cobalt, zirconia, polyetheretherketone (PEEK). In model, a total 500 N force applied from tubercle crests buccolingual direction at an angle 30 degrees long axis tooth. Maximum principal minimum values taken. addition, maximum von Mises obtained substructure Results: When findings mandible during loading evaluated, it found that stresses on cortical higher than trabecular bone. It observed highest occurred implants. Conclusions: thought chromium-cobalt zirconia-based ceramic bridge are more positive terms distribution PEEK-based restorations.