Fluoridated toothpaste should be introduced when a child is 2-3 years of age. Prior to that, parents should clean the child's teeth with water and a soft-bristled toothbrush. When toothpaste is used after age 2-3, parents should supervise brushing and make sure the child uses no more than a pea-sized amount on the brush. Children should spit out and not swallow excess toothpaste after brushing.
When looking for a toothpaste for your child, make sure to pick one that is recommended by the American Dental Association as shown on the box and tube. These toothpastes have undergone testing to insure they are safe to use.