| Literature DB >> 27258932 |
Alexander E Medvedev1, Andrey Molotnikov2, Rimma Lapovok3, Rolf Zeller4, Simon Berner5, Philippe Habersetzer5, Florian Dalla Torre5.
Abstract
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.Entities:
Keywords: Dental implants; Fatigue; Microstructure; SLA (Sand blasting and acid etching); Ti–Zr alloy
Mesh：
Substances：
Year: 2016 PMID： 27258932 DOI： 10.1016/j.jmbbm.2016.05.008
Source DB: PubMed Journal: J Mech Behav Biomed Mater ISSN： 1878-0180