(1855–1930) An American dentist regarded as the father of orthodontics. He graduated from the Pennsylvania College of Dentistry in 1876 after 18 months of study. In 1885 he was appointed professor of orthodontics at the University of Minnesota and was subsequently appointed professor at Northwestern University, the Marion Simms College of Medicine, and the Washington University Medical Department. In 1900 he established the Angle School of Orthodontia in St Louis, Missouri. In 1922 the Edward H. Angle Society of Orthodontia was established by some of Angle's graduates and survived until 1928; it was replaced in 1930 by a new organization, the Angle Orthodontist. Angle classified abnormalities of occlusion (see molar relationship) and designed appliances for their treatment; he also devised a number of surgical techniques.