The earliest known dental prosthesis from ancient Rome may not have been very functional, but it gave its wealthy wearer a million dollar smile.

The gleaming grin resulted from multi-karat gold wire, which was used to string together "artificial teeth," according to the team of Italian researchers who analyzed the ancient bridgework.

They found the object, which dates from the 1st to the 2nd century A.D., in the mouth of an unidentified woman who was buried in an elaborate mausoleum within a Roman necropolis.

"At the moment, this dental prosthesis is the only archaeological remain that corresponds to the literary descriptions (concerning dentistry) [by Martial] of the Roman Age," lead scientist Simona Minozzi told Discovery News.