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在一家超市,两位姑娘走过来,其中一位拿起一盒牙膏说:“瞧,这上面写着预防牙龈出血,我的牙老流血,就买它吧。”一位老大爷精心地选择了一种脱敏牙膏,老人说:“我的牙齿爱发酸,这个牙膏上面写着可以预防牙齿对冷热酸甜过敏。”看来,厂家的确抓准了市场需求。那么,这些牙膏的功效真那么神吗?功效宣传缺乏科学性提起龋病,不能不提到牙菌斑。牙菌斑是细菌及其产物附着在牙齿表面的一层看不见的薄膜,可看作是细菌的生态环境,细菌在此环境中
At a supermarket, the two girls walked in and one of them picked up a box of toothpaste and said: “Look, it says bleeding gums are preventing it. My teeth bleed, buy it.” To choose a desensitization toothpaste, the elderly said: “My teeth love sour, the toothpaste says that can prevent tooth heat against the hot and cold sour and sweet allergy.” "It seems that manufacturers really grasp the market demand. So, the effectiveness of these toothpaste really so God? Lack of scientific propaganda efficacy of caries, can not fail to mention plaque. Dental plaque is an invisible film of bacteria and its products attached to the surface of the tooth, which can be regarded as the bacterial environment. Bacteria in this environment