Relevant aspects of piranha passivation in Ti6Al4V alloy dental meshes

Passivation of titanium alloy dental meshes cleans their surface and forms a thin layer of protective oxide (TiO2) on the surface of the material to improve resistance to corrosion and prevent release of ions to the physiological environment. The most common chemical agent for the passivation proces...

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Autores: Gil Mur, Francisco Javier|||0000-0002-6824-1412, Punset Fuste, Miquel|||0000-0002-1904-8667, Manero Planella, José María|||0000-0002-1673-4389, Verdeguer, Pablo, Rupérez de Gracia, Elisa|||0000-0001-8845-512X
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/369826
Acceso en línea:https://hdl.handle.net/2117/369826
https://dx.doi.org/10.3390/coatings12020154
Access Level:acceso abierto
Palabra clave:Dental materials
Titanium
Dental meshes
Passivation
Piranha
Corrosion resistance
Ion release
Bacterial adhesion
Materials dentals
Àrees temàtiques de la UPC::Enginyeria biomèdica::Biomaterials::Materials dentals
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spelling Relevant aspects of piranha passivation in Ti6Al4V alloy dental meshesGil Mur, Francisco Javier|||0000-0002-6824-1412Punset Fuste, Miquel|||0000-0002-1904-8667Manero Planella, José María|||0000-0002-1673-4389Verdeguer, PabloRupérez de Gracia, Elisa|||0000-0001-8845-512XDental materialsTitaniumDental meshesPassivationPiranhaCorrosion resistanceIon releaseBacterial adhesionMaterials dentalsÀrees temàtiques de la UPC::Enginyeria biomèdica::Biomaterials::Materials dentalsPassivation of titanium alloy dental meshes cleans their surface and forms a thin layer of protective oxide (TiO2) on the surface of the material to improve resistance to corrosion and prevent release of ions to the physiological environment. The most common chemical agent for the passivation process of titanium meshes is hydrochloric acid (HCl). In this work, we introduce the use of Piranha solution (H2SO4 and H2O2) as a passivating and bactericidal agent for metallic dental meshes. Meshes of grade 5 titanium alloy (Ti6Al4V) were tested after different treatments: as-received control (Ctr), passivated by HCl, and passivated by Piranha solution. Physical-chemical characterization of all treated surfaces was carried out by scanning electron microscopy (SEM), confocal microscopy and sessile drop goniometry to assess meshes’ topography, elemental composition, roughness, wettability and surface free energy, that is, relevant properties with potential effects for the biological response of the material. Moreover, open circuit potential and potentiodynamic tests were carried out to evaluate the corrosion behavior of the differently-treated meshes under physiological conditions. Ion release tests were conducted using Inductively Coupled Plasma mass spectrometry (ICP-MS). The antibacterial activity by prevention of bacterial adhesion tests on the meshes was performed for two different bacterial strains, Pseudomonas aeruginosa (Gram-) and Streptococcus sanguinis (Gram+). Additionally, a bacterial viability study was performed with the LIVE/DEAD test. We complemented the antibacterial study by counting cells attached to the surface of the meshes visualized by SEM. Our results showed that the passivation of titanium meshes with Piranha solution improved their hydrophilicity and conferred a notably higher bactericidal activity in comparison with the meshes passivated with HCl. This unique response can be attributed to differences in the obtained nanotextures of the TiO2 layer. However, Piranha solution treatment decreased electrochemical stability and increased ion release as a result of the porous coating formed on the treated surfaces, which can compromise their corrosion resistance. Framed by the limitations of this work, we conclude that using Piranha solution is a viable alternative method for passivating titanium dental meshes with beneficial antibacterial properties that merits further validation for its translation as a treatment applied to clinically-used meshes.Peer ReviewedMultidisciplinary Digital Publishing Institute (MDPI)20222022-01-2720222022-07-07journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/369826https://dx.doi.org/10.3390/coatings12020154reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3698262026-05-27T15:37:01Z
dc.title.none.fl_str_mv Relevant aspects of piranha passivation in Ti6Al4V alloy dental meshes
title Relevant aspects of piranha passivation in Ti6Al4V alloy dental meshes
spellingShingle Relevant aspects of piranha passivation in Ti6Al4V alloy dental meshes
Gil Mur, Francisco Javier|||0000-0002-6824-1412
Dental materials
Titanium
Dental meshes
Passivation
Piranha
Corrosion resistance
Ion release
Bacterial adhesion
Materials dentals
Àrees temàtiques de la UPC::Enginyeria biomèdica::Biomaterials::Materials dentals
title_short Relevant aspects of piranha passivation in Ti6Al4V alloy dental meshes
title_full Relevant aspects of piranha passivation in Ti6Al4V alloy dental meshes
title_fullStr Relevant aspects of piranha passivation in Ti6Al4V alloy dental meshes
title_full_unstemmed Relevant aspects of piranha passivation in Ti6Al4V alloy dental meshes
title_sort Relevant aspects of piranha passivation in Ti6Al4V alloy dental meshes
dc.creator.none.fl_str_mv Gil Mur, Francisco Javier|||0000-0002-6824-1412
Punset Fuste, Miquel|||0000-0002-1904-8667
Manero Planella, José María|||0000-0002-1673-4389
Verdeguer, Pablo
Rupérez de Gracia, Elisa|||0000-0001-8845-512X
author Gil Mur, Francisco Javier|||0000-0002-6824-1412
author_facet Gil Mur, Francisco Javier|||0000-0002-6824-1412
Punset Fuste, Miquel|||0000-0002-1904-8667
Manero Planella, José María|||0000-0002-1673-4389
Verdeguer, Pablo
Rupérez de Gracia, Elisa|||0000-0001-8845-512X
author_role author
author2 Punset Fuste, Miquel|||0000-0002-1904-8667
Manero Planella, José María|||0000-0002-1673-4389
Verdeguer, Pablo
Rupérez de Gracia, Elisa|||0000-0001-8845-512X
author2_role author
author
author
author
dc.subject.none.fl_str_mv Dental materials
Titanium
Dental meshes
Passivation
Piranha
Corrosion resistance
Ion release
Bacterial adhesion
Materials dentals
Àrees temàtiques de la UPC::Enginyeria biomèdica::Biomaterials::Materials dentals
topic Dental materials
Titanium
Dental meshes
Passivation
Piranha
Corrosion resistance
Ion release
Bacterial adhesion
Materials dentals
Àrees temàtiques de la UPC::Enginyeria biomèdica::Biomaterials::Materials dentals
description Passivation of titanium alloy dental meshes cleans their surface and forms a thin layer of protective oxide (TiO2) on the surface of the material to improve resistance to corrosion and prevent release of ions to the physiological environment. The most common chemical agent for the passivation process of titanium meshes is hydrochloric acid (HCl). In this work, we introduce the use of Piranha solution (H2SO4 and H2O2) as a passivating and bactericidal agent for metallic dental meshes. Meshes of grade 5 titanium alloy (Ti6Al4V) were tested after different treatments: as-received control (Ctr), passivated by HCl, and passivated by Piranha solution. Physical-chemical characterization of all treated surfaces was carried out by scanning electron microscopy (SEM), confocal microscopy and sessile drop goniometry to assess meshes’ topography, elemental composition, roughness, wettability and surface free energy, that is, relevant properties with potential effects for the biological response of the material. Moreover, open circuit potential and potentiodynamic tests were carried out to evaluate the corrosion behavior of the differently-treated meshes under physiological conditions. Ion release tests were conducted using Inductively Coupled Plasma mass spectrometry (ICP-MS). The antibacterial activity by prevention of bacterial adhesion tests on the meshes was performed for two different bacterial strains, Pseudomonas aeruginosa (Gram-) and Streptococcus sanguinis (Gram+). Additionally, a bacterial viability study was performed with the LIVE/DEAD test. We complemented the antibacterial study by counting cells attached to the surface of the meshes visualized by SEM. Our results showed that the passivation of titanium meshes with Piranha solution improved their hydrophilicity and conferred a notably higher bactericidal activity in comparison with the meshes passivated with HCl. This unique response can be attributed to differences in the obtained nanotextures of the TiO2 layer. However, Piranha solution treatment decreased electrochemical stability and increased ion release as a result of the porous coating formed on the treated surfaces, which can compromise their corrosion resistance. Framed by the limitations of this work, we conclude that using Piranha solution is a viable alternative method for passivating titanium dental meshes with beneficial antibacterial properties that merits further validation for its translation as a treatment applied to clinically-used meshes.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-01-27
2022
2022-07-07
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/369826
https://dx.doi.org/10.3390/coatings12020154
url https://hdl.handle.net/2117/369826
https://dx.doi.org/10.3390/coatings12020154
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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