Hiroshi Yamada,D.D.S.,Ph.D. 1991 D.D.S. from Osaka Dental University. 1996 Open his private office in Osaka, Japan. “YAMADA ORTHODONTIC OFFICE” 2003 Ph.D. from Osaka Dental University. 2005 Visiting professor of Shanxi University China. 2008~ Part time lecture, Osaka Dental University Department of Orthodontics. 2012~2013 President, Association of Orthodontic Research in kinki Districts. Certified specialist of Japan Orthodontics Society.(1996~) Certified specialist of Japan Association of Adult Orthodontics.(2004~) Certified specialist of European Society of Lingual Orthodontics (2005~) Certified specialist of World Society of Lingual Orthodontics (2006~) Certified instructor of Japan Association of Adult Orthodontics.(2007~) Certified specialist of Japan Lingual Orthodontic Society(2007~) Certified instructor of Japan Orthodontics Society.(2008~) Councilor of Japan Orthodontic Society(2010~)