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 ...

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.

But scientists are working on an alternative: lab-grown human teeth that could one day replace damaged ones. Pamela Yelick and Weibo Zhang at Tufts University School of Dental Medicine in Boston ...