Irrigation Systems and Irrigation Protocols in Endodontics

Endodontic irrigation is a fundamental component of root canal treatment and plays a crucial role in achieving effective canal disinfection. Since mechanical instrumentation alone cannot adequately clean the complex root canal system, irrigants are used to eliminate microorganisms, dissolve organic tissues, remove dentinal debris, and eliminate the smear layer. Over the years, irrigation has evolved from conventional solutions such as sodium hypochlorite and EDTA to advanced irrigant delivery and activation systems, including sonic, ultrasonic, negative-pressure, laser-assisted, and multisonic technologies. These innovations have significantly enhanced irrigant penetration and biofilm removal, thereby improving treatment outcomes. Contemporary irrigation protocols combine appropriate irrigants with activation techniques to maximize cleaning efficiency and disinfection. A thorough understanding of irrigation systems and protocols is therefore essential for optimizing root canal therapy and ensuring long-term endodontic success.