Gum disease, also known as gingivitis and periodontal disease, is when the gums get inflamed and begin to bleed and/or start receding, exposing more of the teeth. In the worst cases, the bones, gums and tissue around the teeth are destroyed, leading to tooth loss, bone infection or worse.

This problem is caused by bacteria, i.e. falling behind on your dental hygiene. The easiest way to prevent it is to brush and floss regularly and thoroughly, and to make sure you visit your dentist at least every six months.