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Moments that Matter - IAO Histories

I've always wondered...why was the IAO formed?

Who were the original members? What was the mission of the largest non-specialty orthodontic society, then and now?

To answer these questions, IAO has begun interviewing our leaders, those who were there from the beginning. Join us in learning the sometimes surprising, sometimes touching, and always fascinating stories of IAO's Moments that Matter.

Interview with Dr. Terrance J. Spahl


Dr. Terrance J. Spahl, co-author, with Dr. John Witzig, of the seminal work, Clinical Management of Basic Maxillofacial Orthodpedic Appliances, is a well-known figure in functional orthodontics, but just how well do you really know him?

A Senior Certified Instructor who has lectured extensively throughout the US and abroad, Dr. Spahl is also the son of a brew master, a cowboy, and a veteran of the Vietnam War. In his own words he is, "a guy that fixes teeth for a living." Get to know this influential figure a bit better by watching Dr. Lee interview in the first part of our ongoing oral history project, Moments that Matter.

Recorded at the Milwaukee Athletic Club, Milwaukee, Wisconsin on July 30, 2015

10 Minutes of IAO History


The IAO Historical Committee presents the early history of the organization through personal photos, recollections, and momemntos. Photos of the first IAO Headquaters, materials, activities, and Dr. Waldemar Brehm and family, were gracioulsy donated by Lindsay Brehm.

Premiered at the 2014 Annual Banquet, Kissimmee, Florida on March 29, 2014

50th Anniversary Celebration - Looking Back Over 50 Amazing Years

In 2011 IAO turned 50. Click on the logo to learn about some of the major milestones of the organization from this article, updated in 2011 from series of articles published in Straight Talk (2001).


Help us remember IAO leaders who are no longer with us by visiting the Memorials page.

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