Roeland DeMoor: Artificial Biofilm Removal out of Internal Root Resorption Cavities with Sonically, Ultrasonically and Laser Activated Irrigation LA&HA Symposium 2022 Related videos Douglas Hanson: Physiology meets Physics Harvey Shiffman: Adding Non-invasive Laser Therapy to Address Snoring and Airway in Your Practice Beatrijs Deruyter: The Importance of Er and Nd Lasers in the Treatment of Periodontitis Jernej Kukovic: Laser Safety in the Time of COVID-19