An abscess is a painful infection at the tooth’s root or sometimes between the gum and the tooth. You can get an abscessed tooth due to untreated tooth decay. However, you can also get abscessed if you have trauma to your teeth, such as breaking or chipping your tooth, gum disease, or gingivitis. If you have an abscessed tooth, you must see your dentist immediately. The abscess or infection may spread from the tooth root to the bone, causing a significant oral health issue.