Inside of each tooth are blood vessels and nerves called the pulp. The pulp can become inflamed, often from bacteria or trauma. Inflammation can cause the pulp of the tooth to die, which can sometimes be very painful. Root canal therapy is a treatment option that can save a tooth if the pulp has died or is irreversibly inflamed. This involves cleaning out the inside of the tooth and placing a biocompatible material in the canal. After the root canal therapy is complete, a filling or crown will be needed to seal the tooth from bacteria and to restore the structure of the tooth. Root canal therapy can take from one to multiple visits depending on how your tooth is feeling and the number of canals in the tooth. Your dentist will be happy discuss options for retaining your tooth and to answer any questions you may have.