Smiles!

From Start to Finish.

Let us help determine any orthodontic problems and all of your treatment options. We’ll even discuss next steps and what to expect from treatment.

Our Doctor

Dr. Mary Cay Koen is a Damon Smile certified orthodontic specialist who has been in the practice of orthodontics for over 20 years! She received her Bachelor of Science degree in Biology at Lambuth University where she served as a Board Chairman. Dr. Koen obtained her dental degree at the University of Tennessee, where she also completed her specialty degree in orthodontics.   Dr. Koen practiced family dentistry for several years before specializing in orthodontics. She feels that this experience gives her a special understanding of the team approach required for her patients who need the combined disciplines of restorative dentistry, orthodontics, and even oral surgery. Dr. Koen has also served her profession as president of both the Tennessee Association of Orthodontists and the University of Tennessee Orthodontic Alumni Association.
Dr. Mary Cay Koen fitting a patient for Invisalign Teen

Excellence in Orthodontics

Dr. Koen’s passion for orthodontics and dental care extends far beyond being simply a “job.” She sees excellent dental health and esthetics as being important to her adolescent and adult patients in terms of self-esteem as well as dental function. Patients and their families become part of Dr. Koen’s office family.

Dr. Koen doing missionary work in Africa

This Commnity & Beyond

Outside of the office, Dr. Koen enjoys teaching an adult Sunday school class and serving as a youth counselor at her church. Dr. Koen is also involved in local and overseas missions. Partnering with Divine Care Ministries, Dr. Koen has helped to build a dental clinic in Uganda as part of a continuing mission to establish modern dental care in an area so desperately underserved. She goes at least once a year, taking a team of adults and students to serve in Uganda.

Robin Himelick
Robin Himelick
2023-05-31
Dr. Koen and her staff are very friendly, they pay attention to details, and keep a timely schedule. Wonderful office!!!
Kelli Guy
Kelli Guy
2023-05-17
Very professional and friendly staff! Everyone was wonderful! They were very thorough with everything and I was only there for a consultation, complementary at that! Dr. Koen was so very nice and extremely helpful. The entire visit was a great experience. Needless to say I will be trusting them with my smile! 😊
Willie S.
Willie S.
2023-04-14
After years of deferring to get braces l finally decided to do do. I'm pleased with the kindness and professionalism Dr. Koen and her staff provided. I'm eagerly looking forward to completing my treatments.
Christian-Joy Kahler
Christian-Joy Kahler
2023-03-08
They are the best. Great with kids, and really care about your experience.
Raven Cook
Raven Cook
2023-03-07
What a sweet staff! They made us feel so welcomed!!
Andrea Kelly
Andrea Kelly
2023-02-17
This place is great! The entire staff is so friendly!

Away from work, local philanthropy involvement, and mission work, Dr. Koen loves spending time with husband Tommy, also an orthodontist, and sons Thomas and Michael. Dr. Koen’s sons are, like her, involved in Divine Care Ministries and have both spent time with their mom in Uganda. She and her family share a mutual love for reading, camping, scuba diving, and skiing.

Adolescent girl doing a split in front of Koen sign