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 ...

A first-time mom was shocked to discover that her newborn entered the world with two fully formed teeth, which she only discovered after she went to feed her for the first time. Nerissa Woodward, ...

A 4-month-old baby from Maryland is doing well after surgeons removed teeth that formed inside his brain, according to a report. The infant’s head was growing rapidly, so doctors had him get an MRI.

Sometimes, when biology goes squirrely, it really goes squirrely. Case in point, a bizarre medical case in which a 4-month-old infant in Maryland was found to have several fully formed teeth embedded ...

Even before birth, however, the permanent change of teeth begins and the newly formed teeth show the first primary serrations. "This means that the first teeth are even changed in the womb -- and ...

Because tooth shape varies with fracture properties of the foods that primates eat, relationships between dental form and function can teach us about the diets of our distant ancestors. Aristotle ...