Microstructure and mechanical properties of Ti–15Zr alloy used as dental implant material. (September 2016)

• Record Type: Journal Article
• Authors: Medvedev, Alexander E.; Molotnikov, Andrey; Lapovok, Rimma; Zeller, Rolf; Berner, Simon; Habersetzer, Philippe; Dalla Torre, Florian
• Is Part Of: Journal of the mechanical behavior of biomedical materials. Volume 62(2016)
• Page Start: 384
• Page End: 398
• Publication Date: 2016-09
• Subjects: Dental implants -- Fatigue -- Ti–Zr alloy -- Microstructure -- SLA (Sand blasting and acid etching); Biomedical materials -- Periodicals; Biomedical materials -- Mechanical properties -- Periodicals; Biomedical materials; Biomedical materials -- Mechanical properties; Periodicals; Electronic journals; 610.28
• DOI: 10.1016/j.jmbbm.2016.05.008
• Languages: English
• ISSNs: 1751-6161

Abstract

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.