Do not try to bear severe toothache using painkillers, because it may be symptom of dental disease that requires root canal treatment. Dentists in Virginia will make you an X-ray and figure out what dental disease you have. The main indication for the tooth canal treatment is inflammatory process that leads to the necrotization of the soft tissues. Inflammatory processes may be caused by various oral diseases and above all by caries and pulpitis. Root canal treatment may also be required in case of periodontitis. Main symptoms of such disease are slight or severe toothache, swelling gums by the damaged tooth.