Teeth can reveal a lot about the lives of ancient humans. The tiny bones withstand the test of time, and by analyzing the wear and decay of teeth, archeologists can infer ancient civilizations' eating and dental habits.
The Vikings grin most likely had signs of tooth decay, according to a new study published in PLOS ONE. After uncovering a cemetery with Viking graves dating to the 10th and 12th centuries, the team found that suffering from tooth decay, tooth loss, and infections was common during this time. Vikings also modified their teeth by filing and picking.