Surface Modification of Orthodontic Wires with Photocatalytic Titanium Oxide for its Antiadherent and Antibacterial Properties

Chun, M. J.; Shim, Eunju; Kho, Eun-Hee; Park, Keum-Joo; Jung, Ja-Rang; Kim, Jin Man; Kim, Byung–Hoon; Lee, Ki-Heon; Cho, Dong-Lyun; Bai, Dong-Hoon; Lee, Syng-Ill; Hwang, Hyeon-Shik; Ohk, Seung‐Ho

doi:10.2319/0003-3219(2007)077[0483:smooww]2.0.co;2

Cited by 77 publications

(74 citation statements)

References 23 publications

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“…However, the rutile form is more thermodynamically stable and resistant against fracture (Choi et al, 2007;Horiuchi et al, 2007; al., 2009). It is also commonly stated that anatase crystals have the highest photocatalytic activity among the crystal types of TiO 2 (Choi et al, 2007;Chun et al, 2007;Horiuchi et al, 2007;Choi et al, 2009;Özyildiz et al, 2010). Since traditional methods present problems with observing the crystal structure of the coated thin films, we used GIXRD and a separate glass slide, which was coated under the same conditions as the arch wires (Hamid, 2003).…”

Section: Discussionmentioning

confidence: 99%

“…Several compounds exist that are capable of photocatalytic degradation of microorganisms, although TiO 2 has gained the most popularity amongst the other photocatalysts for its chemical stability as well as its property of not being hazardous to health (Chun et al, 2007;Akhavan, 2009). Although it has 3 crystal structures that can be produced by different oxidation procedures, the anatase form has the highest reactivity (Horiuchi et al, 2007;Akhavan, 2009;Choi et al, 2009;Sato et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic antimicrobial effect of TiO2 anatase thin-film–coated orthodontic arch wires on 3 oral pathogens

Özyıldız¹,

Uzel²,

Hazar³

et al. 2014

Turk J Biol

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The aim of this study was to introduce antimicrobial activity to stainless steel orthodontic arch wires by coating them with TiO2 in anatase form. Stainless steel (0.016 × 0.022 inch), D-rect (0.016 × 0.022 inch), and multistranded hammered retainer wires (0.014 × 0.018 inch) were coated with TiO2 anatase by the sol-gel dip coating method. The wires were assessed for their photocatalytic antimicrobial activity against Streptococcus mutans, Candida albicans, and Enterococcus faecalis. After illumination under UVA (315– 400 nm) at 1.0 mW/cm2 for 1 h, the reduction efficiencies of the anatase-coated arch wires were calculated by using colony-forming unit counts. All anatase-coated arch wires showed remarkable inhibitor effects against the test microorganisms under UVA. The most efficient wire on S. mutans was the stainless steel wire, with a 99.99% reduction in growth, but multistranded hammered retainer wire was the most active against both C. albicans and E. faecalis, with 98.0% and 91.68% reduction rates, respectively. TiO2-coated arch wires exposed to UVA illumination showed significant antimicrobial activity when compared with uncoated samples and coated, but not UVA-exposed, samples. Our results suggest that the antimicrobial effect of TiO2-coated arch wires in long-lasting orthodontic treatments would be beneficial for the prophylaxis of caries

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalytic antimicrobial effect of TiO2 anatase thin-film–coated orthodontic arch wires on 3 oral pathogens

Özyıldız¹,

Uzel²,

Hazar³

et al. 2014

Turk J Biol

View full text Add to dashboard Cite

show abstract

“…These methods have their greatest potential in thin organic films and coatings [82]. Chun et al [83] applied photocatalytic titanium oxide (TiO 2 ) to stainless steel orthodontic wires using this method to evaluate its antibacterial and antiadherent properties. The results of their investigation showed that photocatalytic TiO 2 may be used to prevent the development of dental plaque during orthodontic treatment.…”

Section: Sol-gel Methodsmentioning

confidence: 99%

Coating and Surface Treatments on Orthodontic Metallic Materials

2012

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Metallic biomaterials have been extensively used in orthodontics throughout history. Gold, stainless steel, cobalt-chromium alloys, titanium and its alloys, among other metallic biomaterials, have been part of the orthodontic armamentarium since the twentieth century. Metals and alloys possess outstanding properties and offer numerous possibilities for the fabrication of orthodontic devices such as brackets, wires, bands, ligatures, among others. However, these materials have drawbacks that can present problems for the orthodontist. Poor friction control, allergic reactions, and metal ionic release are some of the most common disadvantages found when using metallic alloys for manufacturing orthodontic appliances. In order to overcome such weaknesses, research has been conducted aiming at different approaches, such as coatings and surface treatments, which have been developed to render these materials more suitable for orthodontic applications. The purpose of this paper is to provide an overview of the coating and surface treatment methods performed on metallic biomaterials used in orthodontics.

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“…For this reason they have been investigated as potential antimicrobial coatings and inhibit bacterial growth when attached to glass, paper, plastic and metal [5][6][7][8] . For example, methacryloyloxydodecylpyridinium, was incorporated into dental resin composite and reduced microbial activity without leaching 9 .…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Effects of Poly(2-(dimethylamino ethyl)methacrylate) against Selected Gram-Positive and Gram-Negative Bacteria

et al. 2009

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Antimicrobial coatings can reduce the occurrence of medical device-related bacterial infections. Poly(2-(dimethylamino ethyl)methacrylate) (pDMAEMA) is one such polymer that is being researched in this regard. The aims of this study were to (1) elucidate pDMAEMA’s antimicrobial activity against a range of Gram-positive and Gram-negative bacteria and (2) to investigate its antimicrobial mode of action. The methods used include determination of minimum inhibitory concentration (MIC) values against various bacteria and the effect of pH and temperature on antimicrobial activity. The ability of pDMAEMA to permeabilise bacterial membranes was determined using the dyes 1-N-phenyl-naphthylamine and calcein-AM. Flow cytometry was used to investigate pDMAEMA’s capacity to be internalized by bacteria and to determine effects on bacterial cell cycling. pDMAEMA was bacteriostatic against Gram-negative bacteria with MIC values between 0.1−1 mg/mL. MIC values against Gram-positive bacteria were variable. pDMAEMA was active against Gram-positive bacteria around its pK a and at lower pH values, while it was active against Gram-negative bacteria around its pK a and at higher pH values. pDMAEMA inhibited bacterial growth by binding to the outside of the bacteria, permeabilizing the outer membrane and disrupting the cytoplasmic membrane. By incorporating pDMAEMA with erythromycin, it was found that the efficacy of the latter was increased against Gram-negative bacteria. Together, the results illustrate that pDMAEMA acts in a similar fashion to other cationic biocides.

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Surface Modification of Orthodontic Wires with Photocatalytic Titanium Oxide for its Antiadherent and Antibacterial Properties

Abstract: The surface modification of orthodontic wires with photocatalytic TiO(2) can be used to prevent the development of dental plaque during orthodontic treatment.

Cited by 77 publications

References 23 publications

Photocatalytic antimicrobial effect of TiO2 anatase thin-film–coated orthodontic arch wires on 3 oral pathogens

Photocatalytic antimicrobial effect of TiO2 anatase thin-film–coated orthodontic arch wires on 3 oral pathogens

Coating and Surface Treatments on Orthodontic Metallic Materials

Antibacterial Effects of Poly(2-(dimethylamino ethyl)methacrylate) against Selected Gram-Positive and Gram-Negative Bacteria

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