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牙刷是日常生活用品。大小百货商场、商店均有出售。由于人们对牙刷的大小、形状、颜色、刷毛的硬软等各有所好,因此市售牙刷常被人们多次挑选。而在挑选的同时,挑选者手上的细菌等微生物可被带到牙刷上。经四川省内江市卫生防疫站调查,每支市售牙刷带菌数在27～2793个之间。污染了细菌等微生物的牙刷被购买后,刷牙时则可将细菌等带入口腔。如果细菌等微生物通过口腔粘膜或其它途径侵入了机体,则可能使人患病。
Toothbrush is daily necessities. The size of department stores, shops are sold. Due to the size, shape and color of the toothbrush, the softness of the bristles, etc., the commercially available toothbrushes are frequently selected by people many times. At the same time of selection, microbes such as bacteria at the hands of selectors can be brought to the toothbrush. The Neijiang City, Sichuan Province Health and Epidemic Prevention Station survey, each commercially available toothbrush carrying number between 27 ~ 2793. Toothbrushes that contaminate microbes such as bacteria can be taken into the mouth when you brush your teeth. If microbes such as bacteria invade the body through the oral mucosa or other means, it may cause illness.