Root canal treatment involves the removal of the tooth’s pulp, which is the soft tissue inside the tooth containing nerves and blood vessels. The infected or damaged pulp is cleaned out, and the empty space is filled with a biocompatible material. The tooth is then sealed and often restored with a crown to protect it. This procedure is designed to relieve pain, prevent further infection, and save a tooth that might otherwise need to be extracted. It is an effective solution for teeth with deep decay or infection.