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dc.contributor.authorPunset Fuste, Miquel
dc.contributor.authorVilarrasa Sánchez, Javier
dc.contributor.authorNart Molina, José
dc.contributor.authorManero Planella, José María
dc.contributor.authorBosch Canals, Begoña María
dc.contributor.authorPadrós, Roberto
dc.contributor.authorPérez Antoñanzas, Román
dc.contributor.authorGil Mur, Javier
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials
dc.identifier.citationPunset, M. [et al.]. Citric acid passivation of titanium dental implants for minimizing bacterial colonization impact. "Coatings", 12 Febrer 2021, vol. 11, núm. 2, p. 214.
dc.description.abstractSurface topography and physical-chemical properties usually play a key-role in both osseointegration improvement and bacterial colonization reduction over the surface of dental implants. The aim of this study is to compare the chemical and bacteriological behavior of two different acid passivation surface treatments on titanium c.p. grade 3 used for dental implant manufacturing. Surface roughness was evaluated using White Light Interferometry (WLI) in order to determine different roughness parameters such as average roughness (Sa), the spacing parameter (Sm) and the hybrid parameter of surface index area (SIA). Contact angle (CA) and surface free energy (SFE) were evaluated in order to establish the surface wettability of the different groups of samples. Titanium ion-release from the different samples was also been analyzed in Hank’s solution medium at 37 °C by using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) at different immersion times. Bacterial viability adhesion assays were done using S. sanguinis (CECT 480, Spain) as a bacterial strain model of primary colonizer in oral biofilm formation. The bacteria attachment and morphology on Ti surfaces were determined using a live/dead staining method after 4 h of incubation and further analyzed by scanning electron microscope (SEM). Acid passivation surface treatments produced a statistically-significant (p < 0.05) roughness increase in all the evaluated parameters (Sa, Sm, SAI). The treatment with citric acid decreased the static contact angle (CA) and caused an increase in surface free energy (SFE) with a high polarization and oxidizing character. These physical-chemical surface characteristics obtained by means of citric acid passivation caused the bactericidal behavior as it has been proved in bacterial studies.
dc.format.extent1 p.
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria biomèdica::Biomaterials::Materials dentals
dc.subject.lcshBiomedical materials
dc.subject.otherTi cp
dc.subject.otherDental implants
dc.subject.otherTitanium ion release
dc.subject.otherOxide thickness
dc.subject.otherSurface roughness
dc.subject.otherStatic contact angle (CA)
dc.subject.otherSurface free energy (SFE)
dc.subject.otherBacterial adhesion
dc.subject.otherCitric acid passivation
dc.titleCitric acid passivation of titanium dental implants for minimizing bacterial colonization impact
dc.subject.lemacImplants dentals
dc.subject.lemacMaterials biomèdics
dc.contributor.groupUniversitat Politècnica de Catalunya. BBT - Biomaterials, Biomecànica i Enginyeria de Teixits
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
dc.contributor.covenanteeUniversitat Internacional de Catalunya
dc.contributor.covenanteeBarcelona Dental Institute
local.citation.authorPunset, M.; Vilarrasa, J.; Nart Molina, José; Manero, J.; Bosch, B. M.; Padrós, R.; Pérez-Antoñanzas, R.; Gil, J.

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