Drink plenty of water daily. Eat fiber-rich raw foods, which massage the gums and cleans the teeth. Raw foods also increase salivation, which neutralizes acids and alkalis within the mouth. You may grate, dice, ground, blend, or juice raw foods. Good raw foods to eat are apple, carrot, radish, cucumber, orange, pear, beetroot, watermelon, etc. Eat some raw food after every meals. This will help clean your teeth and gums due to high water content. However, after eating citrus fruits or juices, rinse your mouth with water, as the acids present in them can weaken enamel. Eat sprouts of beans. Eat high protein foods.