Dr. Mompell completed his dental studies at Universidad Rey Juan Carlos (URJC), completing his last year of training at the University of Coimbra in Portugal (UC). After these studies, he moved to Sao Paulo in Brazil, where he discovered his passion for orthodontics by completing various training courses at the University of Sao Paulo (USP). Later, he returned to Madrid, Spain where he completed the full orthodontic specialty as a resident at the Jiménez Díaz Foundation University Hospital (FJD) in Madrid. During this period he also completed a master's degree in clinical research at the Universidad Rey Juan Carlos (URJC) in Madrid. At the end of 2015 he decided to move to the University of California, Los Angeles (UCLA) in the United States, to obtain his international doctorate. He remained there for two years and currently works as an orthodontist exclusively in his private practice in Madrid and is an active member of the research team in the Division of Craniofacial Growth and Development. Department of Orthodontics, University of California Los Angeles (UCLA), California. His scientific interest is focused on the expansion of the facial middle third in adults without the need for surgery, through the use of mini-implants. He is studying the effects after expansion on the airway, as well as the facial aesthetic repercussion due to transverse skeletal problems. He has developed several digital protocol used as a references for many colleagues. He is now presenting his work in many international conference and become invited professor advisory Professor at Ajou University, Seoul, Korea and invited professor at European University of Valencia, Murcia University, Alcala de Henares University, Spain. Part of his work has been already published in journals like Progress in Orthodontics and American Journal of Orthodontics a Dentofacial Orthopedics (AJODO)