What is an associated periapical radiolucency?

Abscess: A periapical radiolucency is a condition where the bone at the tip of the root of a tooth is less dense than the surrounding bone, causing the radiograph to be darker in that area. It can be for a tooth that needs root canal therapy or a tooth with a failing root canal. Needs to be treated soon to help save the tooth.

Less dense bone: A periapical radiolucency is a darker area seen around the apex or tip of the root of a tooth. This occurs when the bone is less dense in this area. In most cases it suggests some pathology such as an acute or chronic infection. When the area is very small ; hugs the root, it may be nothing more than an inflammation from occlusal trauma. Sometimes it is only fibrotic scar tissue; also cementoma?