This topic of dentistry refers to infection into the hollow, central part of the tooth and the nerve and blood supply going to the tooth. The required treatment for this type of infection is known as a root canal, and for some reason, is one of the dreaded topics in dentistry. Our Endodontist will prove to you that root canals do not need to cause pain and can be done relatively fast, usually in two visits. Root canals are generally needed for the following reasons: