Meet Our Dentists

Meet Dr. Justin Dinsmore

Being a dentist means providing the best possible oral healthcare in a fun and secure place.

I appreciate the diversity of my days and how no two patients are the same. Every conversation and each procedure is new, exciting, and has me thinking of the best way to meet the individual’s needs. Becoming a dentist was a natural path for me: I wanted to get to know people and be part of their healthcare team, so each can enjoy a healthier and happier life!

Creating and ensuring a healthy, beautiful smile is what drives my passion for dentistry. I am happy to help people have optimal dental health and smiles they are confident to share. Seeing a patient’s pride in their smile, once work is completed, brings me great joy.

~ Dr. Justin Dinsmore

EDUCATION AND PROFESSIONAL AFFILIATIONS

Dr. Justin Dinsmore attended the University of Tennessee Health Science Center College of Dentistry, where he was awarded his Doctorate of Dental Surgery.

Dental school gave him a solid foundational knowledge of the science, medicine, and art of dentistry. However, dentistry, like all areas of healthcare, is a constantly advancing field, and requires practitioners to stay current on the latest changes in order to provide the best care to their patients.

Dr. Dinsmore is a committed lifelong learner and constantly seeks out opportunities to further his skills.

He is an active member of the:

These professional organizations offer a range of continuing educational opportunities, including meetings, seminars, and lectures, as well as multiple publications. Dr. Dinsmore chooses many different courses and areas of study to ensure he is offering patients the high-quality services they deserve.

By studying with peers, and learning from leading practitioners and researchers, Dr. Dinsmore stays up to date on all new technology and techniques. This allows him to provide the best possible patient care, comfortably, and deliver the best results.

BEYOND THE OFFICE

After growing up in Knoxville, Dr. Dinsmore now resides in Oak Ridge with his Miniature Schnauzer, Arthur. He enjoys living a healthy and active lifestyle and loves the outdoors: kayaking, hiking, boating, and spending time in the mountains.

Downtime is enjoyed with friends and family, and cheering on Tennessee Volunteers sports and Tennessee Titan football.

Meet Dr. John Dinsmore

Our semiretired dentist, Dr. John Dinsmore still make an occasional appearance in the office!

My goal as a dentist is to make my patients happy with their smile and to improve their health to the best of my ability.

I chose the profession because I wanted to make a positive difference in people’s lives, while also building relationships with those in my care. I have practiced dentistry since 1974 and truly value every person I have had the pleasure to meet throughout my career. Many are unforgettable and have, in time, become friends.

I appreciate the trust my patients place in me and am dedicated to always doing what is right for each of them.

~ Dr. John Dinsmore

EDUCATION AND PROFESSIONAL AFFILIATIONS

Dr. John Dinsmore obtained his Doctorate of Dental Surgery in 1974 at the University of Tennessee Health Science College of Dentistry.

Since finishing dental school, Dr. Dinsmore has actively sought out avenues to further his knowledge and broaden his skills. This allows him to provide up-to-date care, using advanced techniques, for his patients.

He is an active member of the:

Through these professional organizations, Dr. Dinsmore has access to the latest information on new methodologies, materials, and technologies. He attends meetings, lectures, and seminars, participates in study clubs, and reads the latest publications and journals.

For Dr. Dinsmore, ensuring his patients are satisfied with their smile and happy with the outcome of their treatment, is his greatest reward. Continuing education ensures he is up to date on new technology and procedures, and provides the best care and results for his patients.

BEYOND THE OFFICE

A native of Knoxville, if Dr. Dinsmore is not in the office, he can often be found on the lake, where he enjoys boating and fishing.

Time with family, though, is his top priority. Dr. Dinsmore has two sons, Kevin and Justin. Kevin, the oldest, is a contractor and owns his own business. Justin, the younger son, graduated from UT Health Science College of Dentistry and owns Atomic City Family Dentistry.

In 2020, Dr. Dinsmore married Dr. Jan Henley, who is also a dentist. He now has two additional family members, his step-sons Brad and Grant. Brad is a businessman and Grant is an MD.

Meet Dr. Mary Speicher

It is a genuine pleasure and honor to come to work every day and provide my patients with the best possible care. As a general dentist, I am able to practice all disciplines of dentistry, which makes each day different and unique. Each patient is different as well, which requires a tailor-made treatment plan for their specific dental needs. It never ceases to amaze me how much a patient’s confidence can improve when treatment is complete. The results are life changing and it’s life changing for me as a dentist to be able to provide that for my patients.

EDUCATION AND EXPERIENCE

From a very young age I knew that I wanted to be a dentist and here I am today. When you are lucky enough to do what you love, it makes going to work a joy each day. 

I attended Temple University in Philadelphia, PA where I received my Doctorate of Medical Dentistry. After graduating from Temple, I began working in general practice and started the work that would lead me here today. In 2024, I had the opportunity to join Dr. Justin Dinsmore and the team as an associate here with this amazing group of individuals! The front office, hygienists, assistants, and the doctors are willing to go out of their way to make our patients have the most comfortable dental experience. The team makes going to work so enjoyable every day. I am so fortunate to work with such a caring and competent team.

OUTSIDE THE OFFICE

I love the nature and beauty of the hills we call home. You can find me exploring the Smoky Mountains and spending time with my family when not here in the office. 

CONTINUAL LEARNING

One of the most important aspects of my day to day interactions with patients is keeping on top of new and advancing research and technology. Continuing education helps me stay up to date with the latest techniques and materials along with broadening and obtaining a better understanding of treatments to provide the best care for my patients.

I am a member of several distinguished professional organizations and continue to participate in ongoing learning opportunities to ensure my patients are receiving the best care with modernized practices and treatment:

Experience the East Tennessee Family Dentistry Difference.

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