The effect of bioinert electroexplosive coatings on stress distribution near the dental implant-bone interface

Abstract

In this study, the first time a 2d finite element models of the titanium dental implant with Ti–Zr or Ti–Nb coating sprayed by electro explosive method and bone tissue located near were constructed. The present models simulate small surface implant section and bone located near. Three models with or without bioinert coating were studied in two configurations with cortical or cancellous bone tissue. All materials used in this study were assumed to be linearly elastic, homogenous, and isotropic to simplify the calculation. The stress distribution in the implant and bone tissue located near is uniform. The largest von Mises stress was obtained near the bone-implant interface in the implant area. It has shown that the stress pattern changed in the models with bioinert coatings. The second stress maximum appeared on the boundary between titanium subtract and the coating layer. The most significant changes in stress distribution were reached in the model with Ti–Zr coating. The electro explosive bioinert coatings help to reduce the stress shielding effect and implant failure probability because of bone strength loss. It also was found shear stress changes in the bone tissue.

Keywords

• finite element method
• dental implants
• stress distribution
• bioinert coating
• electro explosive spraying
• zirconium