A Answers (4)
The pulp, or tissue that provides nerves and nutrients to your tooth, needs to be removed during a root canal to save your tooth. When your pulp gets damaged, it must be taken out to keep infection and disease from spreading to your tooth. If caught early, your dentist can safely remove the pulp, clean and seal your root canal, and cover your tooth with a crown.
American Dental Association answered
During a root canal, the pulp of the tooth must be removed because the pulp's tissue has died and if it's not removed, the tooth could become infected. After the pulp is removed, the root canal is cleaned and sealed off to protect it.
Gary L. Sandler, DDS, Dentistry, answered
Once the tissues inside the pulp chamber and canals of the tooth suffer irreversible damage or are violated by exposure from trauma or caries (decay) they will undergo degradation and eventually this dying or dead tissue will become infected and release gases and other chemicals that will eventually escape past the inside of the tooth into the surrounding bone. This will cause pain and often not only causes local bone destruction but can spread the infection to other parts of the body. By completely cleaning out, filling and sealing off the canals of the tooth, it enables the body's defense mechanisms and recuperative powers to heal this area and thus prevent, if successful, any future problems. In this manner, the tooth can be saved rather than having to remove or extract it.
William M. Litaker, Dentistry, answeredThe pulp of the tooth is removed in a root canal just like decay is removed from a tooth with a filling. The pulp is removed because it has become infected from decay causing bacteria or through breakage of the tooth into the pulp. Once the pulp is removed, the tooth can be filled with a root canal filling.