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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Characterization of chemically treated Ti-Zr system alloys for dental implant application

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Author(s):
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Cordeiro, Jairo M. [1, 2] ; Faverani, Leonardo P. [3, 4] ; Grandini, Carlos R. [2, 5] ; Rangel, Elidiane C. [6] ; da Cruz, Nilson C. [6] ; Nociti Junior, Francisco H. [1] ; Almeida, Amanda B. [1] ; Vicente, Fabio B. [2, 7] ; Morais, Bruna R. G. [3, 4] ; Barao, Valentim A. R. [1, 2] ; Assuncao, Wirley G. [8]
Total Authors: 11
Affiliation:
[1] Univ Campinas UNICAMP, Piracicaba Dent Sch, Dept Prosthodont & Periodontol, Av Limeira 901, BR-13414903 Piracicaba, SP - Brazil
[2] IBTN, Rio De Janeiro - Brazil
[3] Univ Estadual Paulista UNESP, Aracatuba Dent Sch, Dept Surg, R Jose Bonifacio 1193, BR-16015050 Aracatuba, SP - Brazil
[4] Univ Estadual Paulista UNESP, Aracatuba Dent Sch, Integrated Clin, R Jose Bonifacio 1193, BR-16015050 Aracatuba, SP - Brazil
[5] Univ Estadual Paulista UNESP, Lab Anelasticidade & Biomat, Ave Engn Luiz Edmundo Carrijo Coube, BR-17033360 Bauru, SP - Brazil
[6] Univ Estadual Paulista UNESP, ICTS, Lab Technol Plasmas, Av Tres Marco 511, BR-18087180 Sorocaba, SP - Brazil
[7] Univ Paulista UNIP, Ave Luis Levorato 1-40, BR-17048290 Bauru, SP - Brazil
[8] Univ Estadual Paulista UNESP, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, R Jose Bonifacio 1193, BR-16015050 Aracatuba, SP - Brazil
Total Affiliations: 8
Document type: Journal article
Source: Materials Science & Engineering C-Materials for Biological Applications; v. 92, p. 849-861, NOV 1 2018.
Web of Science Citations: 6
Abstract

Materials and surfaces developed for dental implants need to withstand degradation processes that take place in the oral cavity. Therefore, the aim of the study was to develop and evaluate the topographical, mechanical, chemical, electrochemical and biological properties of Ti-xZr alloys (x = 5, 10, and 15 wt%) with two surface features (machined and double acid etched). Commercially pure titanium (cpTi) and Ti-6Al-4V alloy were used as controls. Surface characterization was performed using dispersive energy spectroscopy, X-ray diffraction, scanning electron microscopy, atomic force microscopy, profilometry and surface energy. The mechanical properties were assessed using Vickers microhardness, elastic modulus and stiffness. The electrochemical behavior analysis was conducted in a body fluid solution (pH 7.4). In addition, MC3T3-E1 cells were used to determine the impact of material and surface treatment on cell morphology by SEM analysis. Data were analyzed by two-way ANOVA and Bonferroni test (alpha = 0.05). Ti-Zr alloys showed lower surface roughness, elastic modulus and stiffness, as well as higher hardness and surface energy when compared to cpTi. Ti-Zr system increased the polarization resistance values and significantly decreased the capacitance, corrosion current density (i(corr)), and passivation current density (i(pass)) values. The acid treatment increased the resistance and corrosion potential of the oxide layer. SEM data analysis demonstrated that Ti-Zr alloys displayed normal cell attachment/spreading and slightly changed cell morphology in the double etched surface. In conclusion, Zr addition and surface treatment altered surface, mechanical, biological and electrochemical properties of Ti material. (AU)

FAPESP's process: 15/25562-7 - Novel Ti-Mo-Mn Alloys with Low Elastic Modulus for Biomedical Applications
Grantee:Carlos Roberto Grandini
Support type: Regular Research Grants
FAPESP's process: 15/03159-6 - Stability of bioactive coatings produced by plasma electrolytic oxidation.
Grantee:Nilson Cristino da Cruz
Support type: Regular Research Grants
FAPESP's process: 13/08451-1 - Electrochemical stability of cpTi with surfaces modified by acid etching and aluminum oxide sandblasting
Grantee:Valentim Adelino Ricardo Barão
Support type: Regular Research Grants
FAPESP's process: 13/15545-2 - Corrosive, microstructural and peri-implant osteogenesis behavior of Ti-15Zr and commercial alloys (Ticp and Ti-6Al-4V) with or without surface treatment: an in vitro and in vivo study
Grantee:Leonardo Perez Faverani
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/23575-1 - Electrochemical study and microstructural characterization of titanium experimental binary alloys in 3 concentrations (Ti-5Zr, Ti-10Zr, Ti-15Zr) as a function of artificial saliva and simulator body fluid
Grantee:Bruna Regina Gomes Morais
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 16/11470-6 - Magnetron sputtering deposition of tantalum oxide (Ta2O5) films onto titanium surface for biomedical applications: electrochemical behavior, biocompatibility and microbiologic analysis
Grantee:Valentim Adelino Ricardo Barão
Support type: Regular Research Grants