Japanese

Title	舌ブラシ先端形状による細菌除去および洗浄後のブラシの残留細菌数の違い
Subtitle	短報
Authors	伊藤加代子1), 前川知樹2), 濃野要3), 井上誠1,4)
Authors (kana)
Organization	1)新潟大学医歯学総合病院口腔リハビリテーション科, 2)新潟大学大学院医歯学総合研究科高度口腔機能教育研究センター, 3)新潟大学医歯学総合病院予防歯科, 4)新潟大学大学院医歯学総合研究科摂食嚥下リハビリテーション学分野
Journal	日本摂食嚥下リハビリテーション学会雑誌
Volume	24
Number	2
Page	170-176
Year/Month	2020 / 8
Article	報告
Publisher	日本摂食嚥下リハビリテーション学会
Abstract	「要旨」 【目的】舌ブラシには, 歯ブラシのような植毛タイプや, アーチワイヤー状のタイプ, 細かいループ状のナイロン毛が植毛されたナイロンブラシタイプなどいろいろな形状がある. ナイロンブラシは舌苔が厚い場合に有効である一方, 使用後に水洗をしても汚れが落ちにくかったり, 細菌が繁殖しやすくなったりする恐れがある. そこで, ナイロン毛のループ部分をカットしたブラシを作製し, 細菌の除去効果を従来のブラシと比較した. さらに, 流水下での洗浄によるブラシに付着した細菌の残留について比較した. 【方法】ナイロン毛がループ状になっているループブラシ(W-1ブラシ, SHIKIEN)と, ループ部の一部をカットしたループカットブラシを使用した. 各ブラシでBHI寒天培地上に播種したS. aureusを擦過し, 除去した細菌数を比較した. また, 洗浄方法を検討するため, 洗浄なし, 手でブラシを擦らず流水下に10秒おいたブラシ, 流水下でブラシを0, 5, 10, 30秒擦ったブラシに付着していた細菌数を比較した. 【結果】ループブラシおよびループカットブラシで除去した細菌数の中央値はそれぞれ2.0×1011cfu/mL, 2.1×1011cfu/mLで, 統計学的有意差は認められず, 細菌の除去能力は同等であった. また, ループブラシ, ループカットブラシのいずれも, 洗浄前と比較して, 5, 10, 30秒の手洗いで有意に付着細菌数が減少していた. 特にループカットブラシでは, 5秒時に99.9%細菌数が減少し, 10秒時にはさらに減少していた. 10秒時と30秒時では統計学的有意差は認められなかった. したがって, ループカットブラシは, ループブラシと同様な細菌除去効果をもちながらも, 洗浄後に付着している細菌数が少なく, 感染源となる可能性が低いこと, また, 5秒間の流水下での洗浄で99.9%の細菌が除去できる可能性があることが示された.
Practice	医療技術
Keywords	舌ブラシ, 舌苔, 細菌数, tongue coat, tongue brush, bacteria

English

Title	Influence of the Tip Shape of a Tongue Brush on Removing Bacteria from a Culture Medium and Residual Bacteria after Cleaning
Subtitle
Authors	Kayoko ITO1), Tomoki MAEKAWA2), Kaname NOHNO3), Makoto INOUE1,4)
Authors (kana)
Organization	1)Oral Rehabilitation, Niigata University Medical and Dental Hospital, 2)Research Center for Advanced Oral Science, Graduate School of Medical and Dental Sciences, Niigata University, 3)Preventive Dentistry, Niigata University Medical and Dental Hospital, 4)Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences
Journal	The Japanese Journal of Dysphagia Rehabilitation
Volume	24
Number	2
Page	170-176
Year/Month	2020 / 8
Article	Report
Publisher	The Japanese Society of Dysphagia Rehabilitation
Abstract	[Abstract] Tongue cleaners come in various shapes, such as nylon brushes like a toothbrush, scraper type, and brushes implanted with fine nylon looped bristles. Although nylon looped brushes are effective when the tongue coating is thick, there is a possibility that contamination remains even after the brush seems to be clean. We therefore compared the bacterial removal effect of nylon looped brushes with the one of brushes in which part of the loops was cut (loop-cut brush). We also evaluated the amount of bacterial residue after washing by hand for 0, 5, 10, and 30 s under running water. A looped bristle brush (W-1 brush, SHIKIEN) and a loop-cut bristle brush were used to scrape the surface of brain heart infusion (BHI) agar medium seeded with Staphylococcus aureus, and the number of bacteria removed by the two brushes was compared. Additionally, to examine different methods for cleaning the brushes, we compared the number of bacteria remaining on the brushes after washing by hand under running water for 0, 5, 10, and 30 s, and placing the brush under running water alone for 10 s. There was no statistically significant difference between the median number of bacteria removed by the looped bristle brush (2.0×1011 cfu/mL) and the loop-cut bristle brush (2.1×1011 cfu/mL), indicating that there is no difference in the bacterial removal ability between these two brushes. Investigation of the cleaning method revealed that the number of bacteria adhering to the brushes was significantly decreased after washing by hand for 5, 10, and 30 s when compared with no cleaning for both the looped bristle brush and the loop-cut bristle brush. The bacterial count of the cut bristle brush decreased by 99.9% after 5 s of washing by hand, and removed further after 10 s of washing. There was no statistically significant difference between washing by hand for 10 and 30 s for the loop-cut bristle brush. The loop-cut bristle brush had fewer bacteria attached after washing by hand than the looped bristle brush, and rubbing for at least 5 s under running water reaches 99.9% bacteria removal. Therefore, the loop-cut bristle brush may be a superior shape because it has a low likelihood of becoming an infection source, and its bacterial removal ability was similar to that of the looped bristle brush.
Practice	Medical technology
Keywords	tongue coat, tongue brush, bacteria

• 全文ダウンロード： 従量制、基本料金制の方共に770円(税込) です。

参考文献