In regards to treatment, you have a number of options should you develop a periapical cyst. The most common way to resolve the issue is through root canal treatment on the afflicted tooth. The aim is to save and restore the pulp (the inner part of the tooth). Your dentist will drill into your tooth to allow pus to escape through the tooth. The dead pulpal tissue will be removed during this process. Your doctor will fill the space with a root filling to avert any further infection. It will be necessary to monitor this procedure with x-rays. Regardless of whether the cyst is causing you pain, you will require root canal treatment, to ensure that the cyst does not re-emerge).
Should that root canal treatment fail to alleviate the problem, the cyst will need to be surgically removed, a method to be accompanied with an apicectomy, a surgical removal of the apex of the root. However, this is only required in rare cases, as root canal treatment is normally very effective in dealing with problems of this kind.