The sooner the better! Starting at birth, clean your child’s gums with a soft infant toothbrush or cloth and water. Parents should use a tiny smear of fluoride toothpaste to brush baby teeth twice daily as soon as they erupt and a soft, age-appropriate sized toothbrush. Once children are 3 to 6 years old, then the amount should be increased to a pea-size dollop and perform or assist your child’s toothbrushing. Remember that young children do not have the ability to brush their teeth effectively. Children should spit out and not swallow excess toothpaste after brushing.
Begin using floss or floss aid when your child has two teeth that touch.
Floss once a day to remove plaque from between the teeth, where toothbrush bristles can't reach.