Microstructure and mechanical properties of Ti-15Zr alloy used as dental implant material
Version 2 2024-06-04, 05:23Version 2 2024-06-04, 05:23
Version 1 2016-07-11, 09:20Version 1 2016-07-11, 09:20
journal contribution
posted on 2024-06-04, 05:23authored byAE Medvedev, A Molotnikov, Rimma LapovokRimma Lapovok, R Zeller, S Berner, P Habersetzer, F Dalla Torre
Ti-Zr alloys have recently started to receive a considerable amount of attention as promising materials for dental applications. This work compares mechanical properties of a new Ti-15Zr alloy to those of commercially pure titanium Grade4 in two surface conditions - machined and modified by sand-blasting and etching (SLA). As a result of significantly smaller grain size in the initial condition (1-2µm), the strength of Ti-15Zr alloy was found to be 10-15% higher than that of Grade4 titanium without reduction in the tensile elongation or compromising the fracture toughness. The fatigue endurance limit of the alloy was increased by around 30% (560MPa vs. 435MPa and 500MPa vs. 380MPa for machined and SLA-treated surfaces, respectively). Additional implant fatigue tests showed enhanced fatigue performance of Ti-15Zr over Ti-Grade4.
History
Journal
Journal of the Mechanical Behavior of Biomedical Materials