You only get 52 teeth in your lifetime: 20 baby teeth, followed by 32 adult teeth. It's not like that for all animals. Some, like rodents, never replace their teeth. Others, like sharks, keep ...

Like something out of “Repo! The Genetic Opera,” scientists have managed to grow human-like teeth in a lab — and implant them inside a miniature pig’s mouth, in a harbinger of weird new frontiers for ...

Missing teeth can throw your bite out of alignment, altering your facial shape. They can also make you self-conscious about your smile. If you choose to replace missing teeth, your dentist may ...

Losing a tooth is tough. If we lose the small living structures that help us chew our food, we're left with the options of replacing them with dentures or implants that can be costly. Beyond that, ...

The first 3D reconstructions of extinct Cretaceous birds reveal a reptilian tooth replacement pattern. The birds flapping around in the Age of Dinosaurs had all sorts of different teeth in their ...