Root canal therapy is a treatment used to save a tooth when the tissue, blood vessels and nerves inside of a tooth have become inflamed due to extensive decay or other factos. In order to save the tooth and remove the pain, the dentist will need to remove infected and diseased tissue to help clean out the infected area. The canal inside is then medicated to allow the surrounding area to heal. A root canal may need to be performed for deep decay, infections at the tip of the root or inside the tooth canal, and for cracked, broken, or injured teeth. Generally, a crown will need to be placed after the root canal treatment is complete in order to protect the tooth from any further damage. Sensitivity after the procedure is normal after this procedure and it will subside when the tooth has healed. When your treatment has been completed, your dentist will provide you with special instructions on how to care for your newly treated tooth.