This is for the prevention and treatment of abscesses and granulomas.
The inner part of the tooth is made of a pulp that contains the blood vessels and the nerves of the tooth.
When a tooth suffers a trauma or has very deep cavity, then the exposure of the pulp may in turn cause very painful inflammation (pulpitis) and necrotize the tooth.
If a dentist does not intervene at this stage, the inflammation will cause the formation of an abscess at the root tip of the tooth.
The canals of a tooth are first enlarged, cleaned, and sterilized before being closed with hot gutta-percha. This is often referred to as root canal treatment.
The devitalized tooth of an adult may last as long as a live tooth.