Bactericidal behaviour of Ti6Al4V surfaces after exposure to UV-C light

Gallardo-Moreno, Amparo M.; Pacha-Olivenza, Miguel A.; Fernández-Calderón, María Coronada; Pérez-Giraldo, Ciro; Bruque, J.M.; González-Martı́n, M.L.

doi:10.1016/j.biomaterials.2010.03.005

Cited by 74 publications

(78 citation statements)

References 52 publications

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“…In line with those previous reports, in this work, three different strains of Staphylococcus epidermidis differing in the ability to produce extracellular polymeric substances (EPS) (10) have been scrutinized in order to detect if their capsules, if present, could be imaged by using ambient AFM. The choice of this technique is based on the higher resolution achieved with respect to imaging inside liquids (7).…”

mentioning

confidence: 69%

Are the Soft, Liquid-Like Structures Detected around Bacteria by Ambient Dynamic Atomic Force Microscopy Capsules?

Méndez-Vilas

Labajos-Broncano

Perera-Núñez

et al. 2011

Appl Environ Microbiol

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mentioning

confidence: 69%

Are the Soft, Liquid-Like Structures Detected around Bacteria by Ambient Dynamic Atomic Force Microscopy Capsules?

Méndez-Vilas

Labajos-Broncano

Perera-Núñez

et al. 2011

Appl Environ Microbiol

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“…Surprisingly, UV treatment has also been shown to reduce bacterial attachment and biofilm formation on titanium and titanium alloy surfaces. 15,16 Nevertheless, while the effects of UV treatment can last for 16-48 hours, its inhibitory effect will slowly disappear when exposed to air owing to the loss of superhydrophilicity and the increase in carbon components, which restricts its clinical application. Currently, superhydrophilicity is rendered to titanium surfaces via a 12-minute UV treatment, preventing biofilm formation for up to 16 hours.…”

mentioning

confidence: 99%

“…It is widely acknowledged that UV treatment of titanium surfaces results in the excitement of electrons from the valence band to the conduction band, which is followed by the abundant production of electron-hole pairs. Although electron-hole pairs on TiO 2 eventually recombine, this process is relatively slow 15 and has been shown to induce the formation of potential gradients, which can generate surface electrical currents. Remarkably, these currents promote the detachment of bacteria from titanium surfaces.…”

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confidence: 99%

Effect of ultraviolet treatment on bacterial attachment and osteogenic activity to alkali-treated titanium with nanonetwork structures

Zhang

Komasa

Mashimo

et al. 2017

IJN

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Purpose Alkali-treated titanium with nanonetwork structures (TNS) possesses good osteogenic activity; however, the resistance of this material to bacterial contamination remains inadequate. As such, TNS implants are prone to postoperative infection. In this work, we attempted to alter the biological properties of TNS by treatment with short-duration high-intensity ultraviolet (UV) irradiation. Methods TNS discs were treated with UV light (wavelength =254 nm, strength =100 mW/cm 2 ) for 15 minutes using a UV-irradiation machine. We carried out a surface characterization and evaluated the discs for bacterial film formation, protein adsorption, and osteogenic features. Results The superhydrophilicity and surface hydrocarbon elimination exhibited by the treated material (UV-treated titanium with a nanonetwork structure [UV-TNS]) revealed that this treatment effectively changed the surface characteristics of TNS. Notably, UV-TNS also showed reduced colonization by Actinomyces oris during an initial attachment period and inhibition of biofilm formation for up to 6 hours. Moreover, compared to conventional TNS, UV-TNS showed superior osteogenic activity as indicated by increased levels of adhesion, proliferation, alkaline phosphatase activity, osteogenic factor production, and osteogenesis-related gene expression by rat bone marrow mesenchymal stem cells (rBMMSCs). This inverse relationship between bacterial attachment and cell adhesion could be due to the presence of electron–hole pairs induced by high-intensity UV treatment. Conclusion We suggest that simple UV treatment has great clinical potential for TNS implants, as it promotes the osseointegration of the TNS while reducing bacterial contamination, and can be conducted chair-side immediately prior to implantation.

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“…This study is an attempt to correlate the EUV induced surface structuring of PET samples with subsequent changes in wettability. This correlation would allow the fine tuning of surface wettability of polymer samples (such as PET) for specific applications related to biocompatibility control and artificial muscles in biomedical engineering [11][12][13]. * corresponding author; e-mail: inamul.ahad@dcu.ie…”

Section: Introductionmentioning

confidence: 99%

Extreme Ultraviolet Surface Modification of Polyethylene Terephthalate (PET) for Surface Structuring and Wettability Control

et al. 2016

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The surface modification of polyethylene terephthalate (PET) polymer films has been performed by irradiation of extreme ultraviolet photons to investigate the effect of surface structuring on wettability control. For biomedical engineering applications, surface structuring and wettability control of PET films could enhance the polymer biocompatibility by promoting cell adhesion and consequently proliferation. The PET films are irradiated with laser plasma extreme ultraviolet source based on double stream gas puff target under different environments. The extreme ultraviolet modified PET film surfaces are characterized by atomic force microscopy and WCA goniometer. The extreme ultraviolet surface modification resulted in the formation of nano-and microstructuring on the polymer surfaces. The surface structuring consequently increased WCA making the PET surfaces more hydrophobic. The results demonstrate the direct relationship between surface roughness and hydrophobicity for extreme ultraviolet modified PET samples.

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Bactericidal behaviour of Ti6Al4V surfaces after exposure to UV-C light

Cited by 74 publications

References 52 publications

Are the Soft, Liquid-Like Structures Detected around Bacteria by Ambient Dynamic Atomic Force Microscopy Capsules?

Are the Soft, Liquid-Like Structures Detected around Bacteria by Ambient Dynamic Atomic Force Microscopy Capsules?

Effect of ultraviolet treatment on bacterial attachment and osteogenic activity to alkali-treated titanium with nanonetwork structures

Extreme Ultraviolet Surface Modification of Polyethylene Terephthalate (PET) for Surface Structuring and Wettability Control

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