Why is irrigation performed frequently during root canal treatment?

Irrigation is a crucial part of root canal treatment primarily because it helps eliminate noxious materials that can hinder the healing process. During the procedure, debris, bacteria, and organic tissues accumulate within the root canal system. Adequate irrigation with antimicrobial solutions not only cleans the canal surfaces but also helps in dissolving organic tissue and neutralizing toxins released by bacteria.

Effective irrigation ensures that the canal is as clean as possible before it is filled with the root canal material. This cleaning process is essential to minimize the risk of infection and facilitate proper healing after the treatment. While other aspects such as preventing instruments from exceeding the apex and addressing cementum have their significance, the core purpose of irrigation revolves around the elimination of harmful substances that could affect treatment outcomes.