About Your Dentist
"I am honored to practice dentistry and help my patients enjoy healthy confident smiles."
"To offer a welcoming dental home to my patients and their families and provide the best evidence-based comprehensive care for each patient’s specific oral health needs."
The University of Illinois at Chicago College of Dentistry – Chicago, IL Doctorate of Medicine in Dentistry
Continuing Education & Professional Memberships
Dr. Darjaa is a member of the American Dental Association and the Academy of General Dentistry.
Life & Hobbies
Away from the office, Dr. Darjaa enjoys hiking, gardening, baking, and playing board games.
“Most patients that are referred to my office have already received some form of treatment as the cause of their problems have not been corrected. The first thing we will do is find out why you are in pain or have a problem. Over the last 40+ years I have developed, tested, utilized and have patented many of the methods you will find on this website. These were developed because “conventional” methods did not prove sufficient to meet the patient’s needs.”
Meet Dr. Duane Keller
For over 40 years, Dr. Duane Keller has been an instrumental part in treating patients with TMJ and other head and neck pains. He has been active in developing treatments for periodontal “gum” disease as well. He has invented, patented, and taught the TMJ Orthodontic Method, and he has invented, patented, and teaches world-wide the Perio Protect™ Method of treating periodontal disease and gingivitis. Dr. Keller focuses on non-surgical TMJ and chronic pain treatment. Dr. Keller developed these TMJ methods because he and his wife Carol had TMJ problems that were caused by treatments received while in dental school and he had to learn how to correct and manage these injuries with first-hand knowledge. The Perio Protect™ Method was developed as a result of Dr. Keller’s mother requesting a different method of treatment as periodontal surgery was too painful.
Dr. Keller and his staff have a deep passion for every patient that enters our practice. We have a very caring office environment.
•Academy of General Dentistry
•International Association of Orthodontics
•American Dental Association
•Missouri Dental Association
•Greater St. Louis Dental Society
•American Academy of Craniofacial Pain
•American Equilibration Society
•American Academy of Head, Neck and Facial Pain
•Founder, TMJ Research Center, 1980
•International Association of Orthodontics, Leon J. Pinsker “Man of the Year” Award, 1992
•American Academy of Head, Neck and Facial Pain & TMJ Orthopedics Presentation Award, 1992
•International Board of Orthodontics, Award of Diplomate, 1993
•American Association for Functional Orthodontics, 1992, 1992, 1994
•International Association of Orthodontics, Presentation Awards 1999, 2000 & 2001
•American Orthodontic Society, Advancement of the goals of orthodontics, 2001 & 2002
•Founding Member, Appliance Therapy Practitioners Association, 2003
•Cleveland HeartLab 2012 Symposium “Where Inflammation Meets Lipids: The Heart-Brain Connection”
•Missouri Top Dentist 2013
•America’s Top Doc 2015 - 2020