In its simplest sense, a tooth abscess is an infection of the root of the tooth or of the tooth itself. When the root of the tooth is dead, a dentist is most likely to clean the tooth and the root canal before filling the tooth and root canal. In this case, a tooth abscess is likely to form in the root and the infection generates puss. The puss is responsible for most, if not all, of the symptoms of a tooth abscess, including swelling, nerve sensitivity, and pain. On the other hand, when the root of the tooth is still alive, the infection upsets the nerve of said tooth and causes pain. Tooth decay begins as the tooth abscess forms in the soft pulp located in the very center of the tooth. An abscess usually occurs on just a single tooth, but delayed treatment may result in the infection of the surrounding teeth.
A tooth abscess or root abscess is pus enclosed in the tissues of the jaw bone at the tip of an infected tusk. Usually the abscess originates from a bacterial infection that has accumulated in the soft pulp of the tooth. This is usually but not always associated with what is generally described as a dull throbbing excruciating ache.
A root abscess essentially originates from stagnant pulp tissue, usually caused by untreated tusk decay, cracked teeth or extensive periodontal disease. A failed root canal treatment, may also create a related abscess.
From : Orthodontic BKK ,Thailand : Tooth Abscess in Crown and Root
