As kids, many of us looked forward to a visit from the tooth fairy, the loss of "milk teeth" a rite of passage during childhood. But to start losing teeth as an adult is anything but normal. In fact, it's indicative of a whole range of oral health issues, some of them quite serious.
So, what causes teeth to fall out in adulthood, and how can we delay saying goodbye to our pearly whites? For answers, click through this gallery and brush up on the facts surrounding tooth loss.