Improved Corrosion Behavior and Biocompatibility of Porous Titanium Samples Coated with Bioactive Chitosan-Based Nanocomposites

Porous titanium implants can be a good solution to solve the stress shielding phenomenon. However, the presence of pores compromises mechanical and corrosion resistance. In this work, porous titanium samples obtained using a space-holder technique are coated with Chitosan, Chitosan/AgNPs and Chitosa...

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Autores principales:	Cristina García-Cabezón, Vanda Godinho, Coral Salvo-Comino, Yadir Torres, Fernando Martín-Pedrosa
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	porous titanium implants electrodeposition Chitosan/AgNPs Chitosan/Hydroxyapatite coatings corrosion characterization in vitro behavior Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/af8fbc282457433f9ea9ed0628764366
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spelling	oai:doaj.org-article:af8fbc282457433f9ea9ed06287643662021-11-11T17:53:29ZImproved Corrosion Behavior and Biocompatibility of Porous Titanium Samples Coated with Bioactive Chitosan-Based Nanocomposites10.3390/ma142163221996-1944https://doaj.org/article/af8fbc282457433f9ea9ed06287643662021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6322https://doaj.org/toc/1996-1944Porous titanium implants can be a good solution to solve the stress shielding phenomenon. However, the presence of pores compromises mechanical and corrosion resistance. In this work, porous titanium samples obtained using a space-holder technique are coated with Chitosan, Chitosan/AgNPs and Chitosan/Hydroxyapatite using only one step and an economic electrodeposition method. The coatings’ topography, homogeneity and chemical composition were analyzed. A study of the effect of the porosity and type of coating on corrosion resistance and cellular behavior was carried out. The electrochemical studies reveal that porous samples show high current densities and an unstable oxide film; therefore, there is a need for surface treatments to improve corrosion resistance. The Chitosan coatings provide a significant improvement in the corrosion resistance, but the Chitosan/AgNPs and Chitosan/HA coatings showed the highest protection efficiency, especially for the more porous samples. Furthermore, these coatings have better adherence than the chitosan coatings, and the higher surface roughness obtained favors cell adhesion and proliferation. Finally, a combination of coating and porous substrate material with the best biomechanical balance and biofunctional behavior is proposed as a potential candidate for the replacement of small, damaged bone tissues.Cristina García-CabezónVanda GodinhoCoral Salvo-CominoYadir TorresFernando Martín-PedrosaMDPI AGarticleporous titanium implantselectrodepositionChitosan/AgNPsChitosan/Hydroxyapatite coatingscorrosion characterizationin vitro behaviorTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6322, p 6322 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	porous titanium implants electrodeposition Chitosan/AgNPs Chitosan/Hydroxyapatite coatings corrosion characterization in vitro behavior Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	porous titanium implants electrodeposition Chitosan/AgNPs Chitosan/Hydroxyapatite coatings corrosion characterization in vitro behavior Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Cristina García-Cabezón Vanda Godinho Coral Salvo-Comino Yadir Torres Fernando Martín-Pedrosa Improved Corrosion Behavior and Biocompatibility of Porous Titanium Samples Coated with Bioactive Chitosan-Based Nanocomposites
description	Porous titanium implants can be a good solution to solve the stress shielding phenomenon. However, the presence of pores compromises mechanical and corrosion resistance. In this work, porous titanium samples obtained using a space-holder technique are coated with Chitosan, Chitosan/AgNPs and Chitosan/Hydroxyapatite using only one step and an economic electrodeposition method. The coatings’ topography, homogeneity and chemical composition were analyzed. A study of the effect of the porosity and type of coating on corrosion resistance and cellular behavior was carried out. The electrochemical studies reveal that porous samples show high current densities and an unstable oxide film; therefore, there is a need for surface treatments to improve corrosion resistance. The Chitosan coatings provide a significant improvement in the corrosion resistance, but the Chitosan/AgNPs and Chitosan/HA coatings showed the highest protection efficiency, especially for the more porous samples. Furthermore, these coatings have better adherence than the chitosan coatings, and the higher surface roughness obtained favors cell adhesion and proliferation. Finally, a combination of coating and porous substrate material with the best biomechanical balance and biofunctional behavior is proposed as a potential candidate for the replacement of small, damaged bone tissues.
format	article
author	Cristina García-Cabezón Vanda Godinho Coral Salvo-Comino Yadir Torres Fernando Martín-Pedrosa
author_facet	Cristina García-Cabezón Vanda Godinho Coral Salvo-Comino Yadir Torres Fernando Martín-Pedrosa
author_sort	Cristina García-Cabezón
title	Improved Corrosion Behavior and Biocompatibility of Porous Titanium Samples Coated with Bioactive Chitosan-Based Nanocomposites
title_short	Improved Corrosion Behavior and Biocompatibility of Porous Titanium Samples Coated with Bioactive Chitosan-Based Nanocomposites
title_full	Improved Corrosion Behavior and Biocompatibility of Porous Titanium Samples Coated with Bioactive Chitosan-Based Nanocomposites
title_fullStr	Improved Corrosion Behavior and Biocompatibility of Porous Titanium Samples Coated with Bioactive Chitosan-Based Nanocomposites
title_full_unstemmed	Improved Corrosion Behavior and Biocompatibility of Porous Titanium Samples Coated with Bioactive Chitosan-Based Nanocomposites
title_sort	improved corrosion behavior and biocompatibility of porous titanium samples coated with bioactive chitosan-based nanocomposites
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/af8fbc282457433f9ea9ed0628764366
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Improved Corrosion Behavior and Biocompatibility of Porous Titanium Samples Coated with Bioactive Chitosan-Based Nanocomposites

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