Root Canal Therapy. Inside the roots of each tooth are canals that contain cells, nerves, and blood vessels collectively called the pulp. The pulp provides sensation to the tooth and a limited ability for self-repair.
  The procedure known as a root canal is actually the removal of the pulp, cleaning and shaping of the canal, and filling of the empty space. The technical term for this procedure is root canal therapy (RCT).
  There are many conditions that require RCT. These conditions may lead to infection, inflammation, and/or necrosis of the pulp. RCT may also be needed when a tooth does not have enough structure left above the gumline to hold onto a crown.