Influence of Ti-6Al-4V and Ti-15Zr Dental Implants on the Stress in Mandibular Bone A finite element analysis study

Abstract

The purpose of our study was to analyze the influence of Ti-6Al-4V and Ti-15Zr dental implants, with complex implant designs, on the cortical and trabecular mandibular bone in regards to the stress value and its distribution using finite element analysis. A total of four 3D implant assemblies were modeled, each consisting of implant, abutment, abutment screw, cement layer, and ceramic crown. Implants were modeled with different macrostructure designs with focus on the main thread and microthread design as well as complex geometry details. All implants were inserted in the second molar position in the mandible bone section, consisting of two macro-structures, a 2 mm thick cortical bone and an internal cancellous bone. Results revealed that small variations in the implant design led to a great difference in the stress values and distribution in both cortical and cancellous bone. Our results suggest no major difference between Ti-6Al-4V and Ti-15Zr in regards to the material�s ability to decrease stress in the periimplant bone. However, within the same material, results revealed important differences between thread design and implant geometry concerning the stress values and stress concentration in cortical and cancellous bone in the mandibular model.

Electrochemical Study and Mechanical Properties of Ti-Zr Alloy for Biomedical Applications

“…Like titanium, zirconium belongs to the IV group of the periodic table and is recognized as having similar chemical properties. Alloys with different concentrations of zirconium, such as Ti-10Zr, Ti-20, Ti-30Zr, and Ti-50Zr, have been studied in specific conditions for dental implant applications [12][13][14]. Researchers have conducted in vitro, animal, and clinical studies on commercial Roxolid alloys, which are Ti-based alloys with 13-17 wt.% Zr [15].…”