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. Tyler Musto

dr-duane-keller-st-louis-cosmetic-dentist Being able to provide stellar dental care for his patients is one of Dr. Tyler Musto’s goals as a dentist. He works to foster a feeling of kindness and compassion towards both his patients and the dentistry profession. This passion for both dentistry and patients has allowed Dr. Musto to practice dentistry in the St. Louis area for the last 3 years.

Dr. Musto not only has a passion for dentistry; he also has a passion for learning. He attended dental school at the University of Missouri-Kansas City, School of Dentistry and graduated in 2014. Before that, he completed two bachelor’s degrees, one in chemistry and the other in biology. Since his graduation, Dr. Musto is constantly striving to learn more about modern dentistry practices to help provide excellent care to his patients. Dr. Musto is also Invisalign® certified.

Dr. Musto would like to recognize his father and mother, as well as his younger brother, all of whom have been great influences in his life. In his spare time, Dr. Musto enjoys hunting and fishing.

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.

Meet Lesley Callaham, PT

Lesley attended the University of Missouri, Columbia for her undergraduate work and master’s in physical therapy. She was introduced to a physical therapy technique called PRI during her final clinical. Since that time she has been utilizing this treatment approach and a wide array of manual techniques to help alleviate her patient’s pain and return them to their normal routines and/or jobs as soon as possible. She enjoys learning about her patients and customizing a treatment approach that fits their needs.

Aside from PRI and manual work, Lesley has had additional training in temporomandibular joint (TMJ) disorder, women’s health, and dizziness/vertigo.

In her free time Lesley loves reading, cooking, and spending time hiking or exploring the zoo with her husband and son.



Meet Dr. Adam Bogaart, DC

Adam Bogaart uses chiropractic care to improve the health and wellness in all areas of patient’s lives, whether they are having problems with back pain or neck pain, or just want to start feeling better when they wake up in the morning.

Dr. Bogaart takes a “whole person” approach in chiropractic care, which means looking for the underlying causes of disease, discomfort, and pain, as opposed to just treating the symptoms. Many seemingly unrelated symptoms often arise from imbalances in the spinal column, and Dr. Bogaart will be able to determine the root of the pain and create a personalized chiropractic and wellness plan to suit each patient’s individual needs. Under the supervision and care of our caring and skilled chiropractor, patients report higher functioning in all areas of their lives.



Meet the Team

Erica received her associates degree of Applied Science in 2009. Erica is an Expanded Functions Dental Assistant, who is also our TMJ Treatment Coordinator. She has received training in TMJ, orthodontics, sleep apnea, Perio, and implants. She has been with our office since 2009.

Jamie is an Expanded Functions Dental Assistant. She has extra training in TMJ, orthodontics, and Perio. She has been working at our office since 2011.

Rachel graduated from Missouri College with a certificate in Dental Assisting. She has been at our office since 2014. She works at the front desk where she greets and helps our patients, and also helps as a Dental Assistant.

Robin has been at our office since 2012. She works as a Dental Assistant and Medical Insurance Coordinator. She received her certificate in Dental Assisting from Missouri College, and has also received her expanded functions qualifications. Robin also has extra training in TMJ, orthodontics, and Perio.

Marissa has been working in our office since May of 2015. She graduated from Missouri State University with a Bachelor of Science in Biology, and has applied to dental school. Marissa is working as a Dental Assistant until she goes away to dental school.

Kathy has been at our office since 2012, as the Front Office Coordinator. She is trained in all aspects of the front office, and is ready to help any patients with questions regarding their dental accounts and appointments.

Deb has been a Dental Hygienist in our office since 2004. She received her undergrad at Washington University, and received her Dental Hygiene degree at Forest Park. She helps our patients not only with their oral hygiene, but with their overall health with introducing our patients to the Perio Protect™ Method.

Debbie works in the front office as part of the Insurance Coordination Team and has been at our office since 2008. Debbie has a Marketing and Management degree from Missouri State University. She worked at AT&T for several years in several different positions before retiring and joining the Keller Professional Group front office.

Ann is our registered Dental Hygienist. She graduated from SLCC Forest Park in 1977 and joined our office in 1981. Ann has been involved in the development of the Perio Protect™ System from the basic design to the current methods. She received the Orkos award in 2012. Ann has the ability to welcome patients new to the office with the feeling that all are part of our large family and to keep them coming back year after year. We are now treating our fourth generation family members.

Betty joined the office in 1998. She has training in expanded functions, with additional training in TMJ, orthodontics, sleep apnea, Perio, and implants. Betty attended Missouri College where she received her certificate in Dental Assisting.

Amy has a business degree from Webster University and is almost finished with her master’s degree from Lindenwood University. She has been working at various positions since 1994, but has been managing the practice since 2002.