Mohammad Adnan Alhassan, Gehan Fekry Mohamed, Emad Mohamed Tolba M Agamy And Ahmad Gamal Hamzawy,

ABSTRACT

Objectives: The Aim Of This Study Is To Compare Between Two Different Dental Implant Materials; One Is Conventional Titanium And The Other Is Poly Ether Ether Ketone (PEEK) Material, In Terms Of Stress Distribution Under Simulated Loads.

Materials and Methods: Three-dimensional Finite Element Analysis Method Was Used To Compare The Stresses In Mandibular Full-arch Implant-supported Over Dentures Under Simulated Loading. A 3-D Digital Model Of An Edentulous Human Mandible Was Created From Anonymous Human Dried Mandible. Two Implants Were Drawn In The Canine Region Of The Model That Was Restored By Implant Supported Overdenture. Three Replicas Of The Model Were Created In Which The Only Difference Was The Implant Material. Model A Had Two Conventional Titanium Implants, Model B HadNeat (unfilled) PEEK Implants And Model Chad Carbon Fibers Reinforced (CFR) PEEK Implants. A 450-N Load For Each Side Was Applied On Maximum Intercuspation Areas On All Mandibular Arch Teeth.

Results: Model A Showed The Highest Amount Of Stresses In The Peri-implant Bone; Followed By Model B And Model C Respectively. Stresses Within The Body Of Implant Fixture In Model A Was 212 MPa While In Model B 17.9 MPa And 34.6 MPa In Model C. Conclusion: Using PEEK Implants In Implant Supported Overdenture Produces Less Stresses In The Implant Body And More Homogenous Stress Distribution Within The Peri Implant Bone.