Microstructure and mechanical properties of Ti-15Zr alloy used as dental implant material.
biomechanical · Level V
Where this comes from
- Record sourced from PubMed, PMID 27258932.
- Also identified by DOI 10.1016/j.jmbbm.2016.05.008.
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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.
Medical subject headings
- Dental Alloys
- Dental Implants
- Titanium
- Zirconium