A system of opposing genetic forces determines why mammals develop a single row of teeth, while sharks sport several, according to a study published today in the journal Science. When completely ...

While bones can regrow themselves when they break, teeth aren’t so lucky, and that leads to millions of people worldwide ...

Teeth are a unique, enduring archive of a lifetime's experiences, stretching back to before birth. They can reveal childhood hardship, seasonal migration, exposure to pollution, radiation or ...

Children’s first teeth form while they are still in the uterus, but it usually takes time for those teeth to come in and emerge from their gums. But which teeth come in first? The set of teeth that ...

A 4-month-old infant in Maryland may be the first person to have had teeth form in his brain as a result of a specific type of rare brain tumor, according to a new report of the case. The boy is doing ...

Piranha fish are incredible animals that have gotten a bit of a bad reputation over the years. Though relatively small, the fish sport jaws lined with incredibly sharp teeth that they can use to tear ...

Our grandparents and parents tell stories about the time when kids routinely had their tonsils removed. But for people born in the 1960s and later, their routine surgery stories are about having third ...

Hypophosphatasia (HPP), also called Rathbun disease, is a rare, inherited condition that affects how your bones and teeth form. It causes problems with mineralization in your body, which is a process ...

Piranhas are notorious for their razor-sharp teeth, but a new study of the dangerous fish has surprised researchers, revealing just how remarkable their teeth actually are. The research notes that the ...