3D Finite Element Stress Analysis Of Different Abutment Materials in Screw, Implant and Cortical Bone

Purpose: To give an idea of different implant-abutment material behavior by evaluation the stress distribution of material type on surrounding structures of single implant- supported restorations.
Materials and Methods : A 3D Finite Analysis method used for evaluate the distribution of stress in implants were examined using different abutment materials: Titanium(Ti) - (Implant Blue Sky, Bredent, Senden, Germany), Zirconium(Zr) (Implant Blue Sky, Bredent, Senden, Germany), High Performance Polymer (BioHPP)-( Sky elegance abutment, Bredent, Senden, Germany). Fiber reinforced composite(FRC)( World Headquarters sigma-aldrich.) Loading applied and as loading five nodes top an monolithic ceramic restoration. Mises and deflection values through screw and implant and cortical bone were calculated.
Results : The results of the analysis showed that the abutment material affect stress distributions where the least stresses created on bone with BioHPP abutment (16.5Mpa) followed with FRC abutment (17.3Mpa). While its effect on screw showed clear differences, the least stresses created with Zirconia abutment (67.9Mpa) followed by Titanium abutment (85.29Mpa) then FRC (117.32Mpa) finally abutment. These showed BioHPP FRC abutments nearly have very close and less effort bone. The highest stresses on implant showed with FRC and BioHPP abutments as follow (142.4, 122.4 Mpa) while the least stresses with Zirconium and Titanium abutments
(126.5, 137.45 Mpa).
Conclusion: BioHPP and FRC abutment transmit less stress on the bone than Titanium and Zirconium . KEY WORDS : implant abutment,BioHPP , FRC,Stress analysis