According to your dentist and the American Dental Association, you should brush your teeth at least two times a day. Brushing keeps your teeth, gums, and mouth clean and healthy by removing bacteria-causing plaque. It is also recommended that you use a soft-bristled toothbrush and toothpaste that contains fluoride when you brush your teeth. You should spend at least a minute on the top teeth and a minute on the bottom teeth, and remember to brush your tongue; it will help keep your breath smelling fresh!