Análise da distribuição de tensões em implantes dentários de PEEK pelo método de elementos finitos 3D

by Sarot, João Rodrigo

PEEK (poly ether ether ketone) has proved to be an excellent material for the titanium substitute in orthopedic applications. Its related composites can be manufactured with many physical, mechanical and surface properties and in several shapes. This versatility opens a new horizon of possibilities in the development of new implants and components for bucal rehab, especially when the biomechanical behavior of this material is taken into consideration.The aim of this study was to compare, using the three-dimensional finite element method, the stress distribution in the peri-implant support bone in distinct models composed by PEEK components and implants with 30% carbon fiber reinforced (30% CFR-PEEK) and titanium. In the simulations, with a perfect bonding between the bone and the implant, the 30% CFR-PEEK presented higher stress concentration in the implant neck and the adjacent bone due to its lower hardness and higher deformation in relation to the titanium. 30% CFR-PEEK implants and components did not show any advantages in relation to the stress distribution when compared to the titanium implants and components.