Akademik Veri Yönetim Sistemi
Journal of Medical and Biological Engineering, cilt.43, sa.3, ss.239-248, 2023 (SCI-Expanded)
Purpose: The aim of this study was to compare the stress values of implants and bones in maxillary palateless implant-supported overdentures (IODs) supported by different materials using finite element analysis (FEA). Methods: Five different models of IODs supported by different framework materials (cobalt chromium alloy, glass, aramid, polyethylene, and carbon fiber-reinforced composites (FRC) were simulated using the FEA method. In each model, four implants were placed bilaterally in the canine and second premolar regions. Static loads of 150 N were applied to the first molar region using the foodstuff method. The von Mises stresses on implants under the overdenture prosthesis and the maximum and minimum principle stresses on the cortical and trabecular bone were evaluated. Results: The aramid FRC-supported overdenture showed the highest von Mises stress values in the neck of the implants and the connection area between the implants and the locator abutments. When comparing the FRCs, it was found that the stress levels were higher when the overdenture prosthesis was supported by fibers with a low elastic modulus. Conclusion: It was observed that carbon FRC-supported prosthesis transmit less stress to implants and surrounding tissues than prosthesis supported by cobalt–chromium. Based on this study, fibers with a high elastic modulus are recommended for clinical use as an alternative to metal support materials.