Dr. Eiji Tanaka is Professor and Chair of the Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan. He graduated from Osaka University Faculty of Dentistry in 1988 and went on to complete his PhD in 1993. He gained his special license as an orthodontist in the same year, and his orthodontic instructor license in 2000. He is also an accredited specialist in temporomandibular disorders. He took up his current post in 2008 and in May 2015 has also been a Distinguished Adjunct Professor at King Abdulaziz University, Jeddah, Saudi Arabia. His research is centered around biomechanics of the temporomandibular joint (TMJ), application of low-intensity pulsed ultrasound in dental tissue engineering, and development of nucleic acid medicine for treatment of muscle atrophic diseases. Then, the goal of his research is to develop a “good as new” treatment remedy for patients with muscle atrophic diseases and osteoarthritis in the TMJ.