Dr. Takashi Ono has been Professor and Chairman of the Department of Orthodontic Science, Graduate School Tokyo Medical and Dental University (TMDU), Tokyo, Japan since 2010. He is the Vice Director of the TMDU Dental Hospital. From 1991 to 1994, he was a Research Fellow of the Japan Society for the Promotion of Science, and served as a Visiting Clinical Assistant Professor and Postdoctoral Fellow at the University of British Columbia, Vancouver, Canada. From 2000 to 2001, he studied at the University of Copenhagen, Denmark as a Short-term Fellowship Scholar of Japanese Ministry of Education, Culture, Science & Technology (MEXT) in Japan. Prof. Takashi Ono works as a Visiting/Adjunct Professor at 10 domestic as well as international universities. He also serves as an editorial board member for 8 international peer-reviewed journals. Prof. Ono has published 8 book chapters and more than 230 articles related to orthodontics, craniofacial function/dysfunction, sleep-related respiratory disorders, and brain activity. In 2018, He received the IADR/AADR Williams J. Gies Award. He is currently a member of the Executive Committee of the World Federation of Orthodontists (WFO) and serves as the Chairman of the 9th International Orthodontic Congress (IOC) in Yokohama, Japan in 2020.