Jairo M Cordeiro1, Thamara Beline1, Ana Lúcia R Ribeiro2, Elidiane C Rangel3, Nilson C da Cruz3, Richard Landers4, Leonardo P Faverani5, Luís Geraldo Vaz6, Laiza M G Fais6, Fabio B Vicente7, Carlos R Grandini8, Mathew T Mathew9, Cortino Sukotjo10, Valentim A R Barão11. 1. University of Campinas (UNICAMP), Piracicaba Dental School, Department of Prosthodontics and Periodontology, Av. Limeira, 901, Piracicaba, São Paulo 13414-903, Brazil; Institute of Biomaterials, Tribocorrosion and Nanomedicine (IBTN), Brazil and USA. 2. Faculdade de Ciências do Tocantins (FACIT), Rua D 25, Qd 11, Lt 10, Setor George Yunes, Araguaína, Tocantins 77818-650, Brazil; Faculdade de Ciências Humanas, Econômicas e da Saúde de Araguaína/Instituto Tocantinense Presidente Antônio Carlos (FAHESA/ITPAC), Av. Filadélfia, 568, Araguaína, Tocantins 77816-540, Brazil. 3. Univ Estadual Paulista (UNESP), Engineering College, Laboratory of Technological Plasmas, Av. Três de Março, 511, Sorocaba, São Paulo 18087-180, Brazil. 4. University of Campinas (UNICAMP), Institute of Physics Gleb Wataghin, Cidade Universitária Zeferino Vaz-Barão Geraldo, Campinas, São Paulo 13083-859, Brazil. 5. Univ Estadual Paulista (UNESP), Aracatuba Dental School, Department of Surgery and Integrated Clinic, R. José Bonifácio, 1193, Aracatuba, São Paulo 16015-050, Brazil. 6. Univ Estadual Paulista (UNESP), Araraquara Dental School, Department of Dental Materials and Prosthodontics, R. Humaitá, 1680, Araraquara, São Paulo 14801-903, Brazil. 7. Institute of Biomaterials, Tribocorrosion and Nanomedicine (IBTN), Brazil and USA; Universidade Paulista (UNIP), Av. Nossa Sra. de Fátima, 9-50, Bauru, São Paulo 17017-337, Brazil. 8. Institute of Biomaterials, Tribocorrosion and Nanomedicine (IBTN), Brazil and USA; Univ Estadual Paulista (UNESP), Laboratório de Anelasticidade e Biomateriais, Av. Eng. Luiz Edmundo Carrijo Coube, Bauru, São Paulo 17033-360, Brazil. 9. Institute of Biomaterials, Tribocorrosion and Nanomedicine (IBTN), Brazil and USA; University of Illinois College of Medicine at Rockford, Department of Biomedical Sciences, 1601 Parkview Avenue, Rockford, IL 61107, USA; University of Illinois at Chicago, College of Dentistry, Department of Restorative Dentistry, 801 S Paulina, Chicago, IL 60612, USA. 10. Institute of Biomaterials, Tribocorrosion and Nanomedicine (IBTN), Brazil and USA; University of Illinois at Chicago, College of Dentistry, Department of Restorative Dentistry, 801 S Paulina, Chicago, IL 60612, USA. 11. University of Campinas (UNICAMP), Piracicaba Dental School, Department of Prosthodontics and Periodontology, Av. Limeira, 901, Piracicaba, São Paulo 13414-903, Brazil; Institute of Biomaterials, Tribocorrosion and Nanomedicine (IBTN), Brazil and USA. Electronic address: vbarao@unicamp.br.
Abstract
OBJECTIVE: The aim of this study was to develop binary and ternary titanium (Ti) alloys containing zirconium (Zr) and niobium (Nb) and to characterize them in terms of microstructural, mechanical, chemical, electrochemical, and biological properties. METHODS: The experimental alloys - (in wt%) Ti-5Zr, Ti-10Zr, Ti-35Nb-5Zr, and Ti-35Nb-10Zr - were fabricated from pure metals. Commercially pure titanium (cpTi) and Ti-6Al-4V were used as controls. Microstructural analysis was performed by means of X-ray diffraction and scanning electron microscopy. Vickers microhardness, elastic modulus, dispersive energy spectroscopy, X-ray excited photoelectron spectroscopy, atomic force microscopy, surface roughness, and surface free energy were evaluated. The electrochemical behavior analysis was conducted in a body fluid solution (pH 7.4). The albumin adsorption was measured by the bicinchoninic acid method. Data were evaluated through one-way ANOVA and the Tukey test (α=0.05). RESULTS: The alloying elements proved to modify the alloy microstructure and to enhance the mechanical properties, improving the hardness and decreasing the elastic modulus of the binary and ternary alloys, respectively. Ti-Zr alloys displayed greater electrochemical stability relative to that of controls, presenting higher polarization resistance and lower capacitance. The experimental alloys were not detrimental to albumin adsorption. SIGNIFICANCE: The experimental alloys are suitable options for dental implant manufacturing, particularly the binary system, which showed a better combination of mechanical and electrochemical properties without the presence of toxic elements.
OBJECTIVE: The aim of this study was to develop binary and ternary titanium (Ti) alloys containing zirconium (Zr) and niobium (Nb) and to characterize them in terms of microstructural, mechanical, chemical, electrochemical, and biological properties. METHODS: The experimental alloys - (in wt%) Ti-5Zr, Ti-10Zr, Ti-35Nb-5Zr, and Ti-35Nb-10Zr - were fabricated from pure metals. Commercially pure titanium (cpTi) and Ti-6Al-4V were used as controls. Microstructural analysis was performed by means of X-ray diffraction and scanning electron microscopy. Vickers microhardness, elastic modulus, dispersive energy spectroscopy, X-ray excited photoelectron spectroscopy, atomic force microscopy, surface roughness, and surface free energy were evaluated. The electrochemical behavior analysis was conducted in a body fluid solution (pH 7.4). The albumin adsorption was measured by the bicinchoninic acid method. Data were evaluated through one-way ANOVA and the Tukey test (α=0.05). RESULTS: The alloying elements proved to modify the alloy microstructure and to enhance the mechanical properties, improving the hardness and decreasing the elastic modulus of the binary and ternary alloys, respectively. Ti-Zr alloys displayed greater electrochemical stability relative to that of controls, presenting higher polarization resistance and lower capacitance. The experimental alloys were not detrimental to albumin adsorption. SIGNIFICANCE: The experimental alloys are suitable options for dental implant manufacturing, particularly the binary system, which showed a better combination of mechanical and electrochemical properties without the presence of toxic elements.
Authors: Barbora Voltrova; Vojtech Hybasek; Veronika Blahnova; Josef Sepitka; Vera Lukasova; Karolina Vocetkova; Vera Sovkova; Roman Matejka; Jaroslav Fojt; Ludek Joska; Matej Daniel; Eva Filova Journal: RSC Adv Date: 2019-04-11 Impact factor: 4.036
Authors: Leonardo P Faverani; William P P Silva; Cecília Alves de Sousa; Gileade Freitas; Ana Paula F Bassi; Jamil A Shibli; Valentim A R Barão; Adalberto L Rosa; Cortino Sukotjo; Wirley G Assunção Journal: Materials (Basel) Date: 2022-01-30 Impact factor: 3.623
Authors: Renata Falchete do Prado; Gabriela Campos Esteves; Evelyn Luzia De Souza Santos; Daiane Acácia Griti Bueno; Carlos Alberto Alves Cairo; Luis Gustavo Oliveira De Vasconcellos; Renata Silveira Sagnori; Fernanda Bastos Pereira Tessarin; Felipe Eduardo Oliveira; Luciane Dias De Oliveira; Maria Fernanda Lima Villaça-Carvalho; Vinicius André Rodrigues Henriques; Yasmin Rodarte Carvalho; Luana Marotta Reis De Vasconcellos Journal: PLoS One Date: 2018-05-17 Impact factor: 3.240