toothpastes or mouth rinses)When your child's first tooth appears, begin brushing his or her teeth using a very small amount of fluoride toothpaste, about the size of a grain of rice.At about age 3, use a pea-size amount of toothpaste.Rinses should not be used in children under 6 years old.Fluoridated varnishes and/or gels either topically applied by a dentist or other health care professional.Th