Most people have four wisdom teeth, one at the end of each row of teeth (upper and lower, right and left) in the very back of the mouth. They’re the third and last molars to erupt through the gums.

An intraoral x-ray shows (A) a postoperative x-ray of the man's fused third molar with supernumerary tooth and (B) a six-month follow-up x-ray that shows normal bone appearance. Using all available ...

By targeting the USAG-1 gene, researchers believe that they can help people without a full set of teeth regrow teeth. The team says that humans have a third set of teeth available as buds, ready ...