According to studies done, they shown that children who drink fluoridated water from birth have up to 65 percent fewer cavities, and by the time they become teenagers, many of them still have no tooth decay.   If you live in a community without a fluoridated water supply, you can make sure your kid get their fluoride buy talking to their dentist. Ask your child dentist about using fluoride tablets. 

A balanced diet is also an important contributor to healthy teeth and gums. Children especially need calcium, which helps build strong teeth. Good sources of calcium are milk, cheese and yogurt. Research shows that eating cheese after meals seems to inhibit the effects of decay-causing acids. Avoid snacks containing sugar or starch.