Microstructure and mechanical properties of Ti–15Zr alloy used as dental implant material

Alexander E. Medvedev, Andrey Molotnikov, Rimma Ye Lapovok, Rolf Zeller, Simon Berner, Philippe Habersetzer, Florian Hans Dalla Torre

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27 Citations (Scopus)

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 (1–2 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.
Original languageEnglish
Pages (from-to)384-398
Number of pages15
JournalJournal of the Mechanical Behavior of Biomedical Materials
Volume62
DOIs
Publication statusPublished - 1 Sep 2016

Keywords

  • Dental implants
  • Fatigue
  • Ti–Zr alloy
  • Microstructure
  • SLA (Sand blasting and acid etching)

Cite this

Medvedev, A. E., Molotnikov, A., Lapovok, R. Y., Zeller, R., Berner, S., Habersetzer, P., & Dalla Torre, F. H. (2016). Microstructure and mechanical properties of Ti–15Zr alloy used as dental implant material. Journal of the Mechanical Behavior of Biomedical Materials, 62, 384-398. https://doi.org/10.1016/j.jmbbm.2016.05.008