Cordeiro, Jairo M.
Nagay, Bruna E.
Ribeiro, Ana Lucia R.
da Cruz, Nilson C.
Rangel, Elidiane C.
Fais, Laiza M. G.
Vaz, Luis G.
Barao, Valentim A. R.
 Inst Biomat Tribocorros & Nanomed IBTN, Rio De Janeiro - Brazil
 Fac Ciencias Tocantins FACIT, Ave Jose de Brito 730, Araguaina, Tocantins - Brazil
 Ctr Univ Tocantinense Presidente Antonio Carlos U, Ave Filadelfia 568, Araguaina, Tocantins - Brazil
 Sao Paulo State Univ UNESP, Engn Coll, Lab Technol Plasmas, Ave Tres De Marco 511, BR-18087180 Sorocaba, SP - Brazil
 Univ Estadual Paulista UNESP, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, R Humaita 1680, Araraquara, SP - Brazil
Total Affiliations: 6
Journal of Alloys and Compounds;
JAN 5 2019.
Web of Science Citations:
This study developed an experimental quaternary titanium (Ti) alloy and evaluated its surface properties and electrochemical stability. The viability for a biofunctional surface treatment was also tested. Ti-35Nb-7Zr-5Ta (wt%) alloy was developed from pure metals. Commercially pure titanium (cpTi) and Ti-6Al-4V were used as controls. All groups had two surface conditions: untreated (machined surface) and modified by plasma electrolytic oxidation (PEO) (treated surface). The experimental alloy was successfully synthesized and exhibited beta microstructure. PEO treatment created a porous surface with increased roughness, surface free energy, hardness and electrochemical stability (p <0.05). For the machined surfaces, the Ti-Nb-Zr-Ta alloy presented the lowest hardness and elastic modulus (p <0.05) and displayed greater polarization resistance relative to cpTi. Only PEO-treated cpTi and Ti-Al-V alloys exhibited anatase and rutile as crystalline structures. The beta experimental Ti-Nb-Zr-Ta alloy seems to be a good alternative for the manufacture of dental implants, since it presents elastic modulus closer to that of bone, feasibility for surface treatment, electrochemical stability and absence of toxic elements. (C) 2018 Elsevier B.V. All rights reserved. (AU)