Novel antibacterial mouthguard material manufactured using silver-nanoparticle–embedded ethylene-vinyl acetate copolymer masterbatch
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- YOSHIDA Yuriko
- Department of Sports Medicine/Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- CHUREI Hiroshi
- Department of Sports Medicine/Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- TAKEUCHI Yasuo
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- WADA Takahiro
- Department of Advanced Biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- UO Motohiro
- Department of Advanced Biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- IZUMI Yuichi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- UENO Toshiaki
- Department of Sports Medicine/Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Abstract
<p>The purpose of the present study was to develop an antibacterial mouthguard (MG) material using a masterbatch of silvernanoparticle–embedded ethylene-vinyl acetate (EVA) copolymers. In order to verify that the testing material was clinically applicable as an antibacterial MG material, we conducted an antibacterial test, a shock absorption test, and analysis of in vitro silver release. The colony-forming activity of Streptococcus sobrinus, Porphyromonas gingivalis, and Escherichia coli were significantly inhibited on the testing materials compared with the commercial EVA sheet (p<0.05). The shock absorption capability of the testing material was not significantly different from that of the commercial EVA sheet. Cumulative silver release (in pure water) from the testing materials were infinitesimal after soaking for 20 days, which implied that there could be no harm in wearing the MG during exercise. These results showed that this testing material could be clinically applicable as an antibacterial MG material.</p>
Journal
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- Dental Materials Journal
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Dental Materials Journal 37 (3), 437-444, 2018-05-28
The Japanese Society for Dental Materials and Devices