Shakir , D.Z. and Bahnam, I.N. 2023. A Comparative evaluation of smear layer removal using: sonic, ultrasonic, and erbium, chromium: yttrium scandium gallium garnet Laser as activated irrigation techniques (an SEM study) . Erbil Dental Journal (EDJ). 6, 1 (Jun. 2023), 39–49. DOI:https://doi.org/10.15218/edj.2023.05.