Plasma-treated water eliminates Streptococcus mutans in infected dentin model
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- TASAKI Tatsuya
- Department of Operative Dentistry, Tsurumi University School of Dental Medicine
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- OHSHIMA Tomoko
- Department of Oral Microbiology, Tsurumi University School of Dental Medicine Center for Atomic and Molecular Technologies, Graduate School of Engineering, Osaka Univirsity
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- USUI Emi
- Department of Operative Dentistry, Tsurumi University School of Dental Medicine
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- IKAWA Satoshi
- Technology Research Institute of Osaka Prefecture
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- KITANO Katsuhisa
- Department of Oral Microbiology, Tsurumi University School of Dental Medicine Center for Atomic and Molecular Technologies, Graduate School of Engineering, Osaka Univirsity
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- MAEDA Nobuko
- Department of Oral Microbiology, Tsurumi University School of Dental Medicine
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- MOMOI Yasuko
- Department of Operative Dentistry, Tsurumi University School of Dental Medicine
書誌事項
- タイトル別名
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- Plasma-treated water eliminates <i>Streptococcus mutans</i> in infected dentin model
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抄録
<p>Non-mechanical procedures for removing caries-infected dentin are warranted in dentistry. We previously demonstrated the marked sterilization effect for direct irradiation of low-temperature plasma using dentin model infected with Streptococcus mutans. However it requires 180 s of intraoral plasma irradiation to eliminate bacteria. We alternatively investigated whether plasma-treated water (PTW), i.e., pure water exposed to plasma in an atmosphere, has a same bactericidal activity with the plasma irradiation. In the infected dentin model, the viable S. mutans counts recovered by bur at depth of 0.8–2.4 mm from the cavity floor were 104–106 CFU/round bur. After PTW application for only 10 s, the count was significantly decreased to below the detection limit (2.5 CFU/round bur) or 3.0±5.0 CFU/round bur. Since the bactericidal activity of PTW is rapidly deactivated at body temperature (37°C), PTW is likely to be biocompatible and holds significant potential for non-mechanical procedures for removing caries-infected dentin.</p>
収録刊行物
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- Dental Materials Journal
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Dental Materials Journal 36 (4), 422-428, 2017
日本歯科理工学会