The Toothpaste Ingredient Worth Checking Before You Buy
Health
Fluoride toothpaste helps protect against cavities. The CDC recommends brushing with fluoride toothpaste at least twice a day and using fluoride products as directed.
When comparing toothpaste, look at the active ingredients rather than relying on the flavor or front-of-pack branding. Ask your dentist which product suits you if you have concerns about cavities or sensitivity.
Children need age-appropriate amounts and supervision. Follow the directions and ask a dentist or pediatrician about use for very young children.
Source
CDC: About Fluoride