About Bayless Dental Group

Founded in 1976, Bayless Dental Group (formerly Keller Professional Group) has provided dental services to patients from all over the country.

Utilizing our great staff, Bayless Dental Group has grown steadily, adding an in-house research laboratory in 1980. Due to increased demand, Bayless Dental Group moved to its current location, which is handicap accessible and received the Bella Villa Award in for aesthetic improvement of the surrounding neighborhood.

We are proud of our positive engagement with our community, especially with our regular patients who feel like family.

Dr. Keller is nationally recognized in the dental community for developing effective methods for treating head, neck, and jaw pain. Dr. Keller and staff have hosted many seminars, teaching techniques to over 4,000 medical professionals. We have hosted 5 study clubs, which are 3-year programs designed to teach other professionals how to treat and prescribe for adult chronic pain utilizing a multi-dimensional approach.

The Perio Protect™ division of the company was completed in 2000-2004, after taking 11 years to get FDA approval. The Perio Protect™ offices are located at our current location, and together we are proud to service patients with non-surgical, conservative treatments.

In 2016, Dr. Keller was recognized for his research and work with periodontal (gum) disease and Perio Protect by Dentistry Today. Dr. Keller appeared on the front cover of the magazine along with other top dentists who made breakthroughs in Continuing Education (CE). Click here to read the Dentistry Today press release about Dr. Keller and Perio Protect.

We proudly participate with ACN to fight childhood hunger. Anytime a credit or debit purchase is made in office this company puts a percentage towards making a meal to feed a hungry child. Please click here for more information.

Dr Duane Keller

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.

Member of:

  • 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

“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.”

Dr. Duane Keller


Meet Dr. Julie Hereford

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.

Please Call Our Office for a Consultation: (314) 638-4190

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