Take a look at the tooth below. The gums above this tooth are way higher up then they should be. The gums of the other teeth look unaffected. How does only 1 tooth sustain such damage? In THIS case. A lip ring. In this picture you can see that I have pulled the lip back. You can still see the damaged tooth in the back ground. But in between my fingers is the culprit. That white disk is the backing for the patients lip ring. That disk has rubbed the gums right off of the tooth. And since the gum recession was so bad the root of thetooth was exposed and the tooth became much moresusceptible to decay. PLEASE PLEASE PLEASE be careful with lip rings. Plastic is better then metal but anything rubbing againstanother surface can cause damage over time.