Teeth that are affected by severe decay can cause extreme pain and even be dangerous to your overall health, increasing the risk of heart attack, stroke, and other conditions if left untreated. Root canal therapy can save the tooth from extraction and eliminate the pain. This procedure cleans out any abscesses and infections in the area, removes the pulp of the tooth, and sterilizes the nerves underneath to kill any lingering bacteria. A strong filling material is then used to seal the nerve chamber, and a custom-made porcelain crown is placed to give the tooth more strength and support.