“Evaluation of The Effect Using Ultrasonic Waves Alone or With The Adjunctive Use of Er:YAG Laser in the Healing of Peri-Implant Mucositis. (Randomized Clinical Trial)”. Journal of Hama University , vol. 3, no. 2, June 2020, https://hama-univ.edu.sy/ojs/index.php/huj/article/view/330.