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Biomimetic calcium phosphate coating on Ti-7.5Mo alloy for dental application

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Abstract

Titanium and its alloys have been used as bone-replacement implants due to their excellent corrosion resistance and biocompatibility. However, a titanium coating is a bioinert material and cannot bond chemically to bone tissue. The objective of this work was to evaluate the influence of alkaline treatment and heat treatment on the formation of calcium phosphate layer on the surface of a Ti-7.5Mo alloy after soaking in simulated body fluid (SBF). Thirty six titanium alloy plates were assigned into two groups. For group I, samples were immersed in a 5.0-M NaOH aqueous solution at 80°C for 72 h, washed with distilled water and dried at 40°C for 24 h. For group II, after the alkaline treatment, samples were heat-treated at 600°C for 1 h in an electrical furnace in air. Then, all samples were immersed in SBF for 7 or 14 days to allow the formation of a calcium phosphate coating on the surface. The surfaces were characterized using SEM, EDS, AFM and contact angle measurements.

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Acknowledgments

The authors acknowledge financial support received from FAPESP (Project 00059-4/2007) and Capes.

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Authors and Affiliations

  1. Materials and Technology Department, Faculty of Engineering Guaratinguetá, São Paulo State University, UNESP, Av. Dr. Ariberto Pereira da Cunha, 333, Pedregulho, Guaratinguetá, SP, 12516-410, Brazil

    A. L. A. Escada & A. P. R. Alves Claro

  2. Associated Laboratory of Sensors and Materials, LAS, National Institute for Space Research, INPE, Av. dos Astronautas, 1758, Jd. Granja, São José dos Campos, SP, 12227-010, Brazil

    J. P. B. Machado

  3. Department of Engineering Materials (DEMAR), School of Engineering Lorena, University of São Paulo EEL/USP, Lorena, SP, 12601-810, Brazil

    S. G. Schneider

  4. Department of Dental Materials, Faculty of Dentistry of Araçatuba, São Paulo State University-UNESP, Rua José Bonifácio, 1193, Vila Mendonça, Araçatuba, SP, 16015-050, Brazil

    M. C. R. Alves Rezende

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  1. A. L. A. Escada
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Correspondence to A. L. A. Escada.

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Escada, A.L.A., Machado, J.P.B., Schneider, S.G. et al. Biomimetic calcium phosphate coating on Ti-7.5Mo alloy for dental application. J Mater Sci: Mater Med 22, 2457–2465 (2011). https://doi.org/10.1007/s10856-011-4434-0

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  • DOI: https://doi.org/10.1007/s10856-011-4434-0

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