Root Canal Treatment is needed when the pulp chamber and the canals within the roots of a tooth are irreversibly inflamed due to infection, causing severe pain. The inflammation can be caused by many factors such as infection, otherwise known as tooth decay, fractured and broken tooth, fracture lines due to grinding and trauma of a kind. Tooth decay is one of the most common causes of infected pulp resulting in pain and a need for root canal treatment to save the tooth.