The rules are always changing in life and with dental care for children, babies and toddlers. So the new recommendation on fluoride toothpaste is for babies, kids, and toddler is to use a little of it as soon as the very first memorable tooth appears in their mouth. Choosing this best fluoride toothpaste for a toddler is such a tough decision because we are talking about your children and they are the most precious things in your world. We have been practicing dental work for a very long time and understand the best brand and items for you and your children. Below is the current best toothpaste for toddler as of 2020. Best Toothpastes For Toddlers That Get The ADA Seal Of Approval.