Tea: Fluorine contained in tea can be combined with apatite tuberculosis in teeth, which has the functions of acid resistance and tooth decay prevention. Among them, oolong tea and green tea have the highest fluorine content. Polyphenol contained in it is a complex composed of more than 30 substances, which has the efficacy of disinfection and sterilization, can reduce Streptococcus mutans causing tooth decay in the oral cavity, and has the effect of strengthening teeth. Drinking tea regularly can increase the flow of water and liquid in the mouth and maintain oral hygiene. Sugar, pectin and other ingredients in tea react with saliva to moisten the mouth and enhance the self-cleaning ability of the mouth. Chewing tea can also cure gum bleeding. However, it should be noted that when chewing, you should chew slowly and let the tea be ground and chewed into fine powder in your mouth before swallowing saliva. Onion: Onion, especially fresh raw onion, can kill many kinds of bacteria, including Streptococcus mutans, which causes our tooth decay. Lentinus edodes: Lentinus edodes contains lentinan, which can inhibit bacteria in oral cavity from producing dental plaque. Mustard: Mustard contains some ingredients, which can inhibit the reproduction of Streptococcus mutans and lead to tooth decay. Celery: Crude fiber food can sweep some food residues from teeth. In addition, hard chewing can stimulate saliva secretion, balance the pH in the mouth, and achieve natural antibacterial effect. Besides celery, sliced cucumbers and carrots can also massage the gums.

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