What's with the tooth powder?

What's with the Tooth Powder?
Have you ever heard of a dentist telling a patient to stop brushing so hard? I think on some level we know that something has to scrub teeth to get...
What's with the Tooth Powder?
Have you ever heard of a dentist telling a patient to stop brushing so hard? I think on some level we know that something has to scrub teeth to get...