Medically reviewed by Edmund Khoo, DDS A root canal is a dental procedure to remove dead or inflamed tissue, called pulp, from inside a tooth. You may need a root canal if you have symptoms such as ...

A cavity, jaw problems, stress, or even a sinus infection could be the culprit.

"It was bizarre because I had no pain or swelling in my mouth to tell me there was something wrong," Graham Bell said of his ...