EndoSonic Blue - is a wireless passive ultrasonic irrigation (PUI) system. The primary goal of endodontic treatment is the elimination of pathogenic bacteria in the root canal system and the healing of periapical tissue. However, disinfection of the complex anatomy of the root canal system with its fins, ramifications, and lateral canals is challenging and adjunctive strategies are necessary. The adjunctive administration of Passive Ultrasonic Irrigation (PUI) remains one of the most effective disinfection strategies for infected root canals.