Next Article in Journal
Characterization of Thin Chromium Coatings Produced by PVD Sputtering for Optical Applications
Next Article in Special Issue
Effect of the Acid-Etching on Grit-Blasted Dental Implants to Improve Osseointegration: Histomorphometric Analysis of the Bone-Implant Contact in the Rabbit Tibia Model
Previous Article in Journal
Nanoindentation Hardness and Practical Scratch Resistance in Mechanically Tunable Anti-Reflection Coatings
Article

Citric Acid Passivation of Titanium Dental Implants for Minimizing Bacterial Colonization Impact

1
Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Edurad Maristany 16, 08019 Barcelona, Spain
2
UPC Innovation and Technology Center (CIT-UPC), Technical University of Catalonia (UPC), C. Jordi Girona 3-1, 08034 Barcelona, Spain
3
Faculty of Dentistry, International University of Catalonia, Josep Trueta s/n, 08195 Barcelona, Spain
4
Bioengineering Institute of Technology, International University of Catalonia, Josep Trueta s/n, 08195 Barcelona, Spain
5
Barcelona Dental Institute, 08034 Barcelona, Spain
*
Author to whom correspondence should be addressed.
In memoriam Dr. Alejandro Padrós.
Academic Editor: James Kit-hon Tsoi
Coatings 2021, 11(2), 214; https://doi.org/10.3390/coatings11020214
Received: 9 January 2021 / Revised: 8 February 2021 / Accepted: 8 February 2021 / Published: 12 February 2021
(This article belongs to the Special Issue Recent Advanced in Titanium-Based Coatings)
Surface 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. View Full-Text
Keywords: passivation; Ti cp; dental implants; titanium ion release; oxide thickness; surface roughness; static contact angle (CA); surface free energy (SFE); bacterial adhesion; citric acid passivation passivation; Ti cp; dental implants; titanium ion release; oxide thickness; surface roughness; static contact angle (CA); surface free energy (SFE); bacterial adhesion; citric acid passivation
Show Figures

Figure 1

MDPI and ACS Style

Punset, M.; Vilarrasa, J.; Nart, J.; Manero, J.M.; Bosch, B.; Padrós, R.; Perez, R.A.; Gil, J. Citric Acid Passivation of Titanium Dental Implants for Minimizing Bacterial Colonization Impact. Coatings 2021, 11, 214. https://doi.org/10.3390/coatings11020214

AMA Style

Punset M, Vilarrasa J, Nart J, Manero JM, Bosch B, Padrós R, Perez RA, Gil J. Citric Acid Passivation of Titanium Dental Implants for Minimizing Bacterial Colonization Impact. Coatings. 2021; 11(2):214. https://doi.org/10.3390/coatings11020214

Chicago/Turabian Style

Punset, Miquel, Javi Vilarrasa, José Nart, José M. Manero, Begoña Bosch, Roberto Padrós, Roman A. Perez, and Javier Gil. 2021. "Citric Acid Passivation of Titanium Dental Implants for Minimizing Bacterial Colonization Impact" Coatings 11, no. 2: 214. https://doi.org/10.3390/coatings11020214

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop