Dental podcast: Welcome to DentalTalk. I'm Dr. Phil Klein. Today we'll be discussing endodontic irrigation, its history, important principles, and current techniques and devices. Our guest is Dr. Allen Ali Nasseh, a clinical instructor and lecturer at Harvard School of Dental Medicine Post Doctoral Endodontics program for the past 25 years. He is the current director of the Endodontic MicroSurgery course at Harvard and also runs a Private practice limited to Endodontics in Downtown Boston called MicroSurgical Endodontics. Dr. Nasseh is also the CEO and President of RealWorldEndo, an endodontic education, innovation, and medical device company.