Meet Dr. Duane Keller

dr-duane-keller-st-louis-cosmetic-dentist 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 has multiple foreign patents issued or pending. Dr. Keller has authored over 40 articles in refereed journals. He has presented numerous presentations about periodontal disease, TMJ, upper quadrant dysfunction, and oral/systemic complications both nationally and internationally.

Dr. Keller and his staff have a deep passion for every patient that enters our practice. We have a very caring office environment.

“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.”

Temporomandibular joint dysfunctions involve much more than just the jaw joints. Headaches, neck pain, upper back pain, earaches, facial pain, and tooth pain are just a few of patient’s complaints.

“It has taken years to develop examination and diagnostic methods and to incorporate them into a multi-professional treatment regimen that we provide. I am now teaching the other doctors in this office these techniques so we can work together to see that present and future patients receive the optimal care possible. One of these method involves understanding how and why patients suffer from periodontal disease, by understanding the cause of the infection.

Bacteria living in the mouth live in biofilms that are not easily treated by brushing and flossing. The Perio Protect™ Method has been shown to manage and control the bacteria associated with periodontal (gum) disease, decay and which have also been associated with multiple other disease such as cardiovascular disease, Type II diabetes, pregnancy complications, Alzheimer’s disease, arthritic joint changes, and other inflammatory problems.”


Successful recognition and interception can help prevent further degenerative changes and tissue damage. It is our personal and professional goal to assist our patients in any means possible to obtain optimal health, healing and recovery using the treatment methods which have proven most effective and proficient and that optimize long term stability at reasonable costs.

Meet Dr. Julie Hereford

dr-duane-keller-st-louis-cosmetic-dentist Dr. Julie Hereford is a Doctor of Physical Therapy. She has 25 years of experience in physical therapy practice and teaching and has specialized in manual and manipulative therapy and orthopedics. She has practiced in multiple areas of physical therapy such as sports medicine (such as working with a professional baseball team), work injury management, multidisciplinary chronic pain management, treatment of tempromandibular joint dysfunction, and women’s health. Dr. Hereford has taught many courses for physical therapy and anatomy, both at the University level and for continuing education. She enjoys working with patients day to day as well as teaching and learning from other medical professionals.

Dr. Julie Hereford graduated from St. Louis University with a BS in Physical Therapy and a Master’s of Science in Research from the Department of Anatomy and Neurobiology in 1989. As part of this program, she performed original research comparing the effect of ultrasound, intra-articular injection, and phonophoreseis on the morphology of articular cartilage and other joint structures which was presented at state, national and international conferences.

Dr. Hereford completed a Doctorate in Physical Therapy and was named the Graduate with Distinction for her work in that program. In addition to national and state PT organizations, Dr. Hereford is a member of Sigma Xi Research Society and served on the Executive Board of Occupational Injury Prevention and Rehabilitation Society. She lectures frequently to colleagues as well as to community groups. Course presentations have included a variety of manual therapy technique courses, basic science review courses, and anatomical dissection courses. Dr. Hereford is the president and co-founder of CORE Services in St. Louis, MO.

In her private life Dr. Hereford enjoys time with her family, especially with her son, Henry. She is an avid knitter and reader and can often be found reading the latest professional journals as well as American history, especially as it pertains to native cultures, the “Old West,” and the American Civil War.