Khazal, Afrah, Nada N Alhafidh, and Lamiaa Abd Ulrhman Hassan. “Pre-Orthodontic Myofunctional Trainers Appliance System: A Review”. Al-Rafidain Dental Journal 22, no. 1 (March 1, 2022): 46–55. Accessed January 11, 2026. https://rden.uomosul.edu.iq/index.php/rden/article/view/35157.