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BioMed Research International
Volume 2017, Article ID 2785863, 10 pages
https://doi.org/10.1155/2017/2785863
Research Article

Mechanical Characterisation and Biomechanical and Biological Behaviours of Ti-Zr Binary-Alloy Dental Implants

1Department of Surgery, Faculty of Medicine, University of Salamanca, Calle Alfonso X el Sabio, 37007 Salamanca, Spain
2Department of Surgery, Gynecology and Obstetrics, Faculty of Sports and Health Sciences, University of Zaragoza, Plaza de la Universidad 2, 22002 Huesca, Spain
3School of Dentistry, Universitat Internacional de Catalunya, Immaculada 22, 08021 Barcelona, Spain
4Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, EEBE, Technical University of Catalonia (UPC), Barcelona, Spain
5Department of Stomatology I, Faculty of Medicine and Dentistry, University of the Basque Country, Barrio Sarriena, 48940 Leioa, Spain
6Faculty of Medicine and Health Sciences, University of Oviedo, Avenida Julián Clavería, 33006 Oviedo, Spain

Correspondence should be addressed to Aritza Brizuela-Velasco; moc.liamtoh@aleuzirbaztira

Received 23 August 2017; Revised 10 October 2017; Accepted 26 October 2017; Published 29 November 2017

Academic Editor: Francesco Guido Mangano

Copyright © 2017 Aritza Brizuela-Velasco et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The objective of the study is to characterise the mechanical properties of Ti-15Zr binary alloy dental implants and to describe their biomechanical behaviour as well as their osseointegration capacity compared with the conventional Ti-6Al-4V (TAV) alloy implants. The mechanical properties of Ti-15Zr binary alloy were characterised using Roxolid© implants (Straumann, Basel, Switzerland) via ultrasound. Their biomechanical behaviour was described via finite element analysis. Their osseointegration capacity was compared via an in vivo study performed on 12 adult rabbits. Young’s modulus of the Roxolid© implant was around 103 GPa, and the Poisson coefficient was around 0.33. There were no significant differences in terms of Von Mises stress values at the implant and bone level between both alloys. Regarding deformation, the highest value was observed for Ti-15Zr implant, and the lowest value was observed for the cortical bone surrounding TAV implant, with no deformation differences at the bone level between both alloys. Histological analysis of the implants inserted in rabbits demonstrated higher BIC percentage for Ti-15Zr implants at 3 and 6 weeks. Ti-15Zr alloy showed elastic properties and biomechanical behaviours similar to TAV alloy, although Ti-15Zr implant had a greater BIC percentage after 3 and 6 weeks of osseointegration.