"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A study out of Japan showed how targeting genes can regrow teeth in animals. Now, the team has turned to ...

As helpful as they are to many, fillings and dental implants can be detrimental, and while they have long been the only solutions to decay, it may soon be possible for teeth to regrow themselves. A ...

A recent study suggests that male ghost sharks, also known as chimaeras, use an unusual organ for mating – sharp teeth that grow out on their foreheads. Unlike other sharks and rays, ghost sharks do ...