Brush at least twice a day. Brushing removes plaque, a film of bacteria that clings to teeth. When bacteria in plaque come into contact with food, they produce acids. These acids lead to cavities.Floss teeth once a day. Flossing gets rid of food and plaque between the teeth, where your toothbrush cannot reach. If plaque stays between teeth, it can harden into tartar, which must be removed by a dentist or hygienist.
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