You probably don’t think much about teeth until a dentist brings them up. But across the animal kingdom, tooth counts can get wild fast.

These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish ...

Post and core is a dental restoration treatment that’s sometimes performed after a root canal. When a significant portion of a tooth’s structure is removed, a post and core can help keep a dental ...

Tooth or dental erosion is a progressive and irreversible loss of the outermost hard layer of the tooth structure. It is primarily caused by a chemical process and does not include bacterial ...

There's a longstanding debate simmering among biologists who study porcupines. There are 16 porcupine species in Central and South America, but only one in the United States and Canada. DNA evidence ...