A root end surgery is a surgical procedure in which the tip of a tooth is removed. The aim is to treat an infection in the tissue surrouding the root tip, allowing the tooth to be preserved.
A herniated disc or osteoarthritis in the back can put pressure on the nerve roots causing them to inflame. A nerve root infiltration is an injection of cortisone that reduces the inflammation and swelling of the nerve. As a result, you experience less pain and tingling.
