Análise fotoelástica de prótese sobre implante em carga axial

Abstract

Objective: The aim of this study was to evaluate, using photoelasticity, the tensions generated in the alveolar bone in the presence of implant-supported prosthesis with different toppings using crown full of acrylic resin, metal, metal ceramic and pure porcelain, in the region of molar load axial 150N. Methods: We performed experimental analysis by photoelasticity dimensional. The photoelastic test comprised choice of photoelastic resin, obtaining a master model, production of the photoelastic model, calibration of photoelastic material, digital image capture and analysis of the global field of distribution of stresses. Results: In the crown in acrylic resin, under 150N load, there were fringe order 1 in the apical third by mesial and distal in the middle third, and the apex region occurred early order fringe 3; Full metal crown fringed same trend that the acrylic resin, but less intense; PFM crown in 150N load in the middle third of the region were fringe order 2; Pure porcelain crown on all mesial extension of the implant remained the fringe order first. Conclusion: Crowns acrylic and metallic demanded greater load intensity to the tensions from traveling to the bone crest region; Metal-ceramic crowns behaved similarly to pure porcelain crowns, regarding the distribution of voltages; Metal-ceramic crowns showed most requested areas of the biomechanical point of view both in the area of bone crest, as in the middle third region, if we take into account all other materials.