If a cavity is left untreated it will continue to grow and eventually reach the nerve of the tooth. Once a cavity reaches the nerve, the nerve will become inflamed or infected and is typically (but not always) painful. At this point, root canal therapy may be recommended to relieve the pain and save the tooth. A root canal involves incrementally cleaning out the internal segments of the tooth roots and filling the space with a sealer material.
In this example below, a previous filling extended very close to the nerve of the tooth. A root canal was recommended to resolve the pain and save the tooth. If you are having pain or discomfort from a tooth that may need root canal therapy, contact us today for a consultation!