Abscess

A dental abscess forms when bacteria invade the pulp (the soft inner tissue of a tooth) and spread to the surrounding bone. There are two main types: a periapical abscess at the tip of the root, and a periodontal abscess in the gum next to a tooth root.

Common symptoms

• Severe, persistent throbbing toothache
• Swelling in the face or cheek
• Sensitivity to hot, cold, or pressure
• Fever and tender lymph nodes
• A bad taste or sudden rush of foul-smelling fluid

Treatment

An abscess will not heal on its own. Treatment usually involves draining the infection, root canal therapy, or extraction, plus antibiotics if the infection has spread. For children, watch for the 9 signs your child needs emergency dental care.