In the history of teeth, perhaps no tooth is as famous as the saber tooth. These long, blade-like canines seem almost perfectly optimized to kill prey. They've evolved at least five times in ...

The green, orange and red colors represent the preserved teeth, while the blue represent missing ones and the purple teeth have not been recovered. ESRF / Paul Tafforeau, Vincent Beyrand Unlike ...

We may earn commission if you buy from a link. Why Trust Us? A study out of Japan showed how targeting genes can regrow teeth in animals. Now, the team has turned to a human clinical trial.