Ask a Dentist: Is Charcoal Toothpaste a Good Idea?

Ask a Dentist: Is Charcoal Toothpaste a Good Idea?

Ugh! In eighteenth-century London, most people brushed their teeth with a combination of chimney soot and salt. Over time, more functional and better-tasting toothpaste was developed, with active ingredients like fluoride (to fight dental decay) and potassium nitrate...