Clean your infant's mouth. Brush your toddler's teeth. Wean from the breast or bottle by the first birthday. Do not put your child to bed with a bottle. Help brush your child's teeth until he or she is eight years old. Use a fluoride toothpaste. Floss your child's teeth as soon as the teeth fit closely together. Use a fluoride supplement or rinse if recommended by the dentist. Encourage your child to avoid sweets and sticky foods. Teach your child to brush after snacking. Check your child's teeth for white, yellow, or brown spots, which are signs of decay. Make sure your child visits the pediatric dentist every six months.