A dental abscess is the accumulation of pus caused by a bacterial infection and that can occur due to various reasons, such as untreated cavities or a periodontal problem. Symptoms include severe pain, fever, swelling, inflammation etc.
If an abscess is not treated, it can cause the infection to spread, or cause a fistula, through which pus drains out.
A drainage consists of creating a small access through the tissues to allow the pus to flow out.
In cases where the pulp is affected, it may be necessary to do a root canal treatment to be able to resolve the infection. In cases where the infection persists, despite having performed the root canal treatment, it may be necessary to perform an apicoectomy or remove the tooth, depending on the case.