Why do we use toothpaste?

Toothpaste is something that lots of people use to keep their teeth clean. It makes our mouths smell nice and fresh, but that’s not the only thing it does! So, why do we use toothpaste? We asked dentist Dr. Jean Star to help us find the answer. Got a question that’s stuck in your head, like spinach between molars? Send it to us at BrainsOn.org/contact, and we’ll help floss out an answer. See omnystudio.com/listener for privacy information.