Inhibition of denture plaque by TiO 2 coating on denture base resins in the mouth

Obata, Tomokuni; Ueda, Takayuki; Sakurai, Kazuo

doi:10.1016/j.prosdent.2017.01.005

Cited by 6 publications

(5 citation statements)

References 19 publications

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“…This suggested that in the absence of chemical cleaner, both type of coatings might have contributed to the reduction of C. albicans adherence observed. Our findings are consistent with previous reports that nano‐ceramic coating inhibited adhesion of C. albicans 29–31,34,35 . Since the surface roughness were not significantly different between the coated and uncoated samples when soaked in deionized water (Table 1), the difference in C. albicans adhesion could likely have been due to the improved surface properties of the nano‐ceramic coatings.…”

Section: Discussionsupporting

confidence: 92%

“…Our findings are consistent with previous reports that nano-ceramic coating inhibited adhesion of C. albicans. [29][30][31]34,35 Since the surface roughness were not significantly different between the coated and uncoated samples when soaked in deionized water (Table 1), the difference in C. albicans adhesion could likely have been due…”

Section: Discussionmentioning

confidence: 98%

“…Many studies investigating the effects of coating of dental materials on oral microbial adhesion have reported C. albicans adhesion on materials with a single type of coating. [29][30][31] While it has been well-documented that C. albicans is prevalent on denture-base PMMA and is a significant contributor to dentureinduced oral pathosis, we are aware of the fact that oral biofilm is a complex community consisting of numerous microbial species found in the oral cavcity. 32,33 Our study demonstrated that C. albicans was capable of adhering to uncoated and both TiO 2 and TiO 2 /ZrO 2 coated PMMA surfaces after soaking in water.…”

Section: Discussionmentioning

confidence: 99%

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Effect of nano‐ceramic coating on surface property and microbial adhesion to poly(methyl methacrylate)

Yang

Ginsburg

et al. 2023

J Biomed Mater Res

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To improve surface properties of poly(methyl methacrylate) (PMMA) using nano-ceramic coatings and assess microbial adherence after long-term use of a chemical cleanser.Thirty-six PMMA samples were fabricated, polished and coated with a nano-thin TiO 2 or mixed TiO 2 /ZrO 2 , with uncoated samples as controls. Six samples in each group (n = 12) were soaked in Polident denture cleaner 180 times for 30 min, while six were soaked in deionized water. Surface roughness of PMMA before and after being soaked in Polident was assessed. All samples were subsequently exposed to Candida albicans for 6 h and the adherent cells were determined by viable colony count. Two-way analysis of variance was performed for statistical analysis. No significant difference in surface roughness was noted between the uncoated and coated PMMA before soaking. After soaking, surface roughness of the uncoated PMMA increased from 0.164 to 0.532 μm (p < .05). No significant change was observed for TiO 2 -coated (0.105-0.143 μm) or TiO 2 /ZrO 2 -coated PMMA (0.104-0.141 μm). Attachment of C. albicans to PMMA soaked in water showed significantly less attachment to both TiO 2 -coated (1.4 Â 10 3 cfu/ml) and TiO 2 /ZrO 2coated PMMA (1.6 Â 10 3 cfu/ml) than to the uncoated PMMA (2.6 Â 10 3 cfu/ml). After soaking in Polident, the uncoated PMMA had significantly less C. albicans attachment than coated samples. Less attachment was noted on the TiO 2 /ZrO 2 -coated PMMA then the TiO 2 -coated samples (p < .05). Nano-ceramic TiO2 2 /ZrO 2 coating of PMMA denture base material alters surface properties thus reduces oral microbial adhesion. It represents a promising alternative to the chemical disinfection for PMMA denture materials.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

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Effect of nano‐ceramic coating on surface property and microbial adhesion to poly(methyl methacrylate)

Yang

Ginsburg

et al. 2023

J Biomed Mater Res

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“…However, TiO 2 -coating makes the resin surface more hydrophilic, with a water contact angle of 25.4 ± 2.1 degrees ( Figure 5 ). It has been reported that TiO 2 coating applied to acrylic resin inhibits the adhesion of S. sanguinis and C. albicans organisms [ 67 , 68 ]. In this study, enhancement in the hydrophilic properties of acrylic resin based orthodontic resin surface suppresses the adhesion of early colonizer, the subsequent adhesion of other microbes, which could reduce the total number of microbes adhering to orthodontic resin.…”

Section: Discussionmentioning

confidence: 99%

Antibacterial, Hydrophilic Effect and Mechanical Properties of Orthodontic Resin Coated with UV-Responsive Photocatalyst

et al. 2018

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Photocatalysts have multiple applications in air purifiers, paints, and self-cleaning coatings for medical devices such as catheters, as well as in the elimination of xenobiotics. In this study, a coating of a UV-responsive photocatalyst, titanium dioxide (TiO2), was applied to an orthodontic resin. The antibacterial activity on oral bacteria as well as hydrophilic properties and mechanical properties of the TiO2-coated resin were investigated. ultraviolet A (UVA) (352 nm) light was used as the light source. Antibacterial activity was examined with or without irradiation. Measurements of early colonizers and cariogenic bacterial count, i.e., colony forming units (CFU), were performed after irradiation for different time durations. Hydrophilic properties were evaluated by water contact angle measurements. While, for the assessment of mechanical properties, flexural strength was measured by the three-point bending test. In the coat(+)light(+) samples the CFU were markedly decreased compared to the control samples. Water contact angle of the coat(+)light(+) samples was decreased after irradiation. The flexural strength of the specimen irradiated for long time showed a higher value than the required standard value, indicating that the effect of irradiation was weak. We suggest that coating with the ultraviolet responsive photocatalyst TiO2 is useful for the development of orthodontic resin with antimicrobial properties.

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“…Improving the surface structure of acrylate polymers, for instance, by modifying and incorporating phosphate or carboxyl groups into the structure of PMMA, can result in less accumulation of microorganisms [ 64 , 65 ]. Copolymers obtained in this way have a negatively charged surface, attract positively charged antimicrobial proteins of saliva, and prevent the adsorption and growth of candida while weakening the mechanical properties of acrylates [ 66 ].…”

Section: Biofilm On the Surface Of Dental Acrylate Polymersmentioning

confidence: 99%

The Use of Acrylate Polymers in Dentistry

et al. 2022

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The manuscript aimed to review the types of acrylate polymers used in dentistry, as well as their chemical, physical, mechanical, and biological properties. Regarding their consistency and purpose, dental acrylate polymers are divided into hard (brittle), which includes acrylates for the production of plate denture bases, obturator prostheses, epitheses and maxillofacial prostheses, their repairs and lining, and soft (flexible), which are used for lining denture bases in special indications. Concerning the composition and method of polymerization initiation, polymers for the production of denture bases are divided into four types: heat-, cold-, light-, and microwave-polymerized. CAD/CAM acrylate dentures are made from factory blocks of dental acrylates and show optimal mechanical and physical properties, undoubtedly better monomer polymerization and thus biocompatibility, and stability of the shape and colour of the base and dentures. Regardless of the number of advantages that these polymers have to offer, they also exhibit certain disadvantages. Technological development enables the enhancement of all acrylate properties to respond better to the demands of the profession. Special attention should be paid to improving the biological characteristics of acrylate polymers, due to reported adverse reactions of patients and dental staff to potentially toxic substances released during their preparation and use.

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Inhibition of denture plaque by TiO 2 coating on denture base resins in the mouth

Cited by 6 publications

References 19 publications

Effect of nano‐ceramic coating on surface property and microbial adhesion to poly(methyl methacrylate)

Effect of nano‐ceramic coating on surface property and microbial adhesion to poly(methyl methacrylate)

Antibacterial, Hydrophilic Effect and Mechanical Properties of Orthodontic Resin Coated with UV-Responsive Photocatalyst

The Use of Acrylate Polymers in Dentistry

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