Welcome to the website of the Midwestern Society of Orthodontists!

The Midwestern Society of Orthodontists (MSO) is a constituent of the American Association of Orthodontists (AAO). We are comprised of approximately 1,380 members across the component states of Illinois, Iowa, Minnesota, Missouri, Nebraska, North Dakota, South Dakota and Wisconsin, as well as the Canadian province of Manitoba. Since 1939, the MSO has continuously strived to support the AAO mission by providing helpful resources, clear communication and strong leadership to component societies and individual members.

    President's Welcome

2014 MSO Earl E. Shepard Distinguished Service Award Recipient

Join colleagues at the business meeting in honoring Dr. Arnie Hill (Minnesota) as the 2014 MSO Earl E. Shepard Distinguished Service Award winner. MSO's annual service award recognizes a person who exemplifies the ideals of the orthodontic profession and has made exemplary contributions to the art and science of orthodontics.

Dr. Hill has served the majority of his career as staff consultant at the Mayo Clinic; part of that time as its Program Director. He has left a positive impact on our specialty through his service as president of MSO (1996-97) in addition to serving as delegate and Reference Committee Chair for many years, and as chair of COSA helping to develop the first Orthodontic Treatment Guidelines. Dr. Hill now is a private contractor and consultant to various private practices and companies in the Twin Cities area.<Read More>



MSO/GLAO 2014 Annual Session
Doctor and Staff Program
September 11-13, 2014
Chicago, Illinois

MSO 2015 Ad Interim
March 20-21, 2015
St. Louis, Missouri

MSO 2015 Annual Session
Doctor and Staff Program
October 9-10, 2015
Rochester, Minnesota

MSO 2016 Annual Session
Doctor and Staff Program
November 4-5, 2016
Chicago, Illinois