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| Leiton, A. G. Stahl |
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| Jung, A. W. |
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| Barrera, C. Baldenegro |
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Medvedev, A.e.
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article
Microstructure and mechanical properties of Ti-15Zr alloy used as dental implant material
Abstract
S.384-398 ; 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 (1-2 µm), 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% (560 MPa vs. 435 MPa and 500 MPa vs. 380 MPa for machined and SLA-treated surfaces, respectively). Additional implant fatigue tests showed enhanced fatigue performance of Ti-15Zr over Ti-Grade4. ; 62