Like the rest of the body, the teeth and mouth need a well-balanced diet from a variety of foods from the five major food groups. Many snacks children eat can lead to cavity formation. The more frequently a child snacks, the greater the chance for tooth decay. In addition, when food stays in the mouth for a long time, this causes longer acid attacks on tooth enamel. When your child snacks, choose nutritious foods such as vegetables, low-fat yogurt and low-fat cheeses, which are healthier and better for children’s teeth.