Dr. Won Moon is the Thomas R. Bales Endowed Chair in Orthodontics and the program director at UCLA. He completed his dental education at Harvard and orthodontic education at UCLA. His work in multiple areas has been published in various journals, and he is a co-author of three textbooks; these findings have been presented in 19 countries, totaling over 300 presentations. He is responsible for developing Maxillary Skeletal Expander (MSE) in 2004, and he has been active in advocating non-surgical skeletal expansion in both children and adult patients, especially for those who may suffer from airway restrictions. His work in MSE has been widely accepted internationally, and numerous peer-reviewed publications are available.