Sitting in a dentist’s waiting room is a dread that can only be numbed by Novocaine. No one wants a drill in their mouth, after all. But what if you never needed a root canal again, and could instead ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A sliver of what makes sharks so intriguing comes with their ability to regrow teeth. And while a group ...

Teeth help animals bite and chew food. Meat-eating carnivores tend to have sharp teeth to sink into their prey, while herbivores tend to have flatter teeth to grind down their plant-based meals. Some ...