Root canal treatments often require two visits to ensure the infection is completely eliminated and the tooth fully restored. The dentist will remove the infected pulp and shape the root canal during the first visit. A temporary filling is placed to protect the tooth until the next visit. The temporary filling is removed at the second visit, and the root canal is filled with a permanent material. This two-visit process ensures that the infection is entirely eliminated and the tooth is restored correctly, reducing the risk of future complications.