An Antibacterial Surface on Dental Implants, Based on the Photocatalytic Bactericidal Effect

Suketa, Naoki; Saeki, Takashi; Kitaura, Hideki; Naito, Mariko; Baba, Koumei; Nakayama, Koji; Wennerberg, Ann; Atsuta, Mitsuru

doi:10.1111/j.1708-8208.2005.tb00053.x

Cited by 100 publications

(81 citation statements)

References 33 publications

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“…Ohko et al (2001) have found that silicone catheters coated with a thin layer of TiO 2 can be decontaminated using UV radiation of low intensity. Similar bactericidal effects were also observed in experiments on the sterilization of contaminated dental implants coated with titanium dioxide (Suketa et al 2005). Bactericidal properties of photocatalytic coatings have been used in filters cleaning the air (Lopez and Jacoby 2002) and in installations for water decontamination (Ireland et al 1993, Alrousan et al 2009, Chong et al 2010.…”

Section: Discussionsupporting

confidence: 50%

Survival of Staphylococcus aureus exposed to UV radiation on the surface of ceramic tiles coated with TiO2

Szczawinski¹,

Tomaszewski²,

Jackowska-Tracz³

et al. 2011

Polish Journal of Veterinary Sciences

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The aim of this study was to determine and compare the antimicrobial activity of UV radiation of wavelength 253.7 nm (used in typical germicidal lamps) against Staphylococcus aureus on the surfaces of conventionally produced white ceramic wall tiles (matt and shiny) and the same tiles coated with TiO 2 using three different methods: RF diode sputtering, atmospheric pressure chemical vapour deposition (APCVD) and spray pyrolysis deposition (SPD). Results clearly indicate that the bactericidal action of UV radiation is much stronger on the surfaces of tiles coated with TiO 2 than on the tiles uncovered. The strongest bactericidal effect of UV radiation was found for film prepared by APCVD. Results of experiments for shiny and matt tiles did not differ statistically. The use of ceramic wall tiles coated with TiO 2 films in hospitals, veterinary clinics, laboratories, food processing plants and other places where UV radiation is applied for disinfection should greatly improve the efficiency of this treatment.

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Section: Discussionsupporting

confidence: 50%

Survival of Staphylococcus aureus exposed to UV radiation on the surface of ceramic tiles coated with TiO2

Szczawinski¹,

Tomaszewski²,

Jackowska-Tracz³

et al. 2011

Polish Journal of Veterinary Sciences

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“…The TiO 2 layer conferred photocatalytic bactericidal effect against S. aureus under UVA irradiation. The bactericidal effects of TiO 2 under UV-light irradiation is particularly useful for sterilizing the contaminated surface of dental implants as reported by Suketa et al (112). The authors used a plasma source ion implantation to deposit a layer of TiO 2 onto metallic titanium and tested the photobactericidal effectiveness of the resulting surfaces on Actinobacillus actinomycetemcomitans and Fusobacterium nucleatum, two microorganisms responsible for infections of the oral cavity.…”

Section: Anodic Oxidationmentioning

confidence: 99%

Titanium Oxide Antibacterial Surfaces in Biomedical Devices

et al. 2011

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Int J Artif Organs ( 2011; : 9) 929-946 34 TITANIUM OXIDE AND ANTIBACTERIAL SURFACES IN BIOMEDICAL DEVICES Device-related infections: a clinical demand driving material science researchAn increasing number of clinical procedures requires the use of biomedical devices, whose widespread presence in modern therapeutic treatments is driving the demand for better performances and longer reliability. One of the major issues of both short-term devices and implantable prostheses is represented by device-related infections (DRIs) Accepted: August 31, 2011 rEViEW due to bacterial colonization and proliferation (1). About half of the 2 million cases of nosocomial infections that occur each year in the United States are associated with indwelling devices (2): these infections generally require a longer period of antibiotic therapy and repeated surgical procedures, resulting in potential risks for the patient and increased costs for the healthcare system. The planktonic bacteria that colonize a device surface tend to form a biofilm and the sessile bacterial cells, enclosed in a self-produced polymeric matrix of this kind, can withstand host immune responses and generally show extraordinary antibiotic resistance (3). Eventually, bacteria rapid multiply and disperse in planktonic form, giving rise

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“…In applying the photocatalytic bactericidal properties of titania, an on-demand feature for decontamination can be added to biomedical surfaces, and is of particular interest for percutaneous implants and devices. A number of studies have been devoted to this matter and have shown promising results [4,11,[34][35][36][37], but further research is needed to improve efficiency and avoid adverse effects of UV light on healthy tissue, etc.…”

Section: Discussionmentioning

confidence: 99%

Stability and prospect of UV/H2O2 activated titania films for biomedical use

Unosson

Welch

Persson

et al. 2013

Applied Surface Science

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Biomedical implants and devices that penetrate soft tissue are highly susceptible to infection, but also accessible for UV induced decontamination through photocatalysis if coated with suitable surfaces. As an on-demand antibacterial strategy, photocatalytic surfaces should be able to maintain their antibacterial properties over repeated activation. This study evaluates the surface properties and photocatalytic performance of titania films obtained by H 2 O 2 -oxidation and heat treatment of Ti and Ti-6Al-4V substrates, as well as the prospect of assisting photocatalytic reactions with H 2 O 2 for improved efficiency. H 2 O 2 -oxidation generated a nanoporous coating, and subsequent heat treatment above 500°C resulted in anatase formation. Tests using photo-assisted degradation of rhodamine B showed that prior to heat treatment, an initially high photocatalytic activity (PCA) of H 2 O 2 -oxidized substrates decayed significantly with repeated testing. Heat treating the samples at 600°C resulted in stable yet lower PCA. Addition of 3% H 2 O 2 during the photo-assisted reaction led to a substantial increase in PCA due to synergetic effects at the surface and H 2 O 2 photolysis, the effect being most notable for non-heat treated samples. Both heat treated and non-heat treated samples showed stable PCA through repeated tests with H 2 O 2 -assisted photocatalysis, indicating that the combination of H 2 O 2 -oxidized titania films, UV light and added H 2 O 2 can improve efficiency of these photocatalytic surfaces. Highlights Ti and Ti64 substrates were surface modified by H 2 O 2 -oxidation and heat treatments. TiO 2 /UV/H 2 O 2 synergy effects significantly boosted rhodamine B degradation. 3% H 2 O 2 addition increased stability over repeated use.

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An Antibacterial Surface on Dental Implants, Based on the Photocatalytic Bactericidal Effect

Abstract: The bactericidal effect of the TiO(2) photocatalyst is of great use for sterilizing the contaminated surface of dental implants.

Cited by 100 publications

References 33 publications

Survival of Staphylococcus aureus exposed to UV radiation on the surface of ceramic tiles coated with TiO2

Survival of Staphylococcus aureus exposed to UV radiation on the surface of ceramic tiles coated with TiO2

Titanium Oxide Antibacterial Surfaces in Biomedical Devices

Stability and prospect of UV/H2O2 activated titania films for biomedical use

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