When it comes to a healthy smile, brushing and flossing often get all the attention, but what you eat plays just as big a role. The right foods can strengthen your enamel, protect your gums, and even help clean your teeth naturally. On the other hand, sugary or acidic foods can wear down enamel and invite cavities. If you want to give your smile an extra boost, here are 5 mouth-healthy foods that benefit both your teeth and gums.