Terrance J. Spahl, Doctor of Dental Surgery, is a leading expert on orthodontics, maxillofacial orthopedics, and temporomandibular disorder (TMD). A graduate of the University of Minnesota, he has won numerous industry awards over an illustrious 50-year career, including "Clinician of the Year" by the American Association of Functional Orthodontics, the "Lifetime Achievement Award" by the Appliance Therapy Practitioners Association, the "Hayden-Stack Award" by the American Academy of Craniofacial Pain (their highest honor for a single recipient), and the esteemed "Leon Pinsker Award" by the International Association of Orthodontics (their highest individual award). A certified Senior Instructor for the IAO, Dr. Spahl has lectured extensively on the subjects of orthodontics and TMD, lending his expertise to conferences across North and South America, Europe, Asia, and Australia. In addition to The Headache-Free Wonders of Functional Orthodontics, he is the principal author of a quartet of textbooks, The Clinical Management of Basic Maxillofacial Orthopedic Appliances, Volume I: Mechanics; Volume II: Diagnostics; and Volume III: Temporomandibular Joint, as well as The Clinical Management of the FJO/TMD/Migraine Continuum: An Evidence-Based Construct. Today, Dr. Spahl continues to lead the Spahl Dentistry practice in St. Paul, Minnesota, where he takes great joy in serving patients alongside his daughter, EmmaLee J. Spahl, DDS.