(Graham Thompson/CBC) A Saint John auction house has opened online bidding on a collection of megalodon shark teeth that are millions of years old. Sarah Jones, curator at Jones Auction House ...

The National Institutes of Health identifies several signs of gum disease, including red, swollen, or bleeding gums; pain while chewing; persistent bad breath; and loose or sensitive teeth.

Tap water across America has, for decades, been fortified with fluoride, a negatively charged ion of the chemical element fluorine, in order to strengthen the public’s teeth. But a scientific ...

Scientists in Japan are working on a medication to allow humans to grow a third set of teeth. This treatment focuses on a gene responsible for tooth growth and has begun clinical trials.