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Patient Testimonials


Dr. K was personable, professional and answered ALL my questions about the procedure. He was a great help in making my decision. Appointments were accurate with no wait time. Every step of the process from making appointments, to directions and aftercare exceeded expectations. AND, the work he did on my tooth went smoothly with a successful outcome

Gail Knoxville, TN

Everyone at this office is absolutely amazing!

Latisha Maryville, TN

This place was great. You will not dread your root canal anymore. Dr. Gaudry knows what he’s doing and the staff couldn’t be any nicer! I had no problems at all

LouAnne B Knoxville, TN

Dreaded the procedure, like most people - but it was a breeze. A professional staff was the first thing I noticed. No pain whatsoever; Dr. K explained everything he was doing throughout the process, which was very helpful in alleviating stress. Add to that the fact that Dr. K called me personally to see how I was doing at 8:30 pm that evening - not a staff member but the Dr. himself. Never seen that before, ever - this was a great experience

Scott C. Lenoir City, TN

Dr. Gaudry was excellent. He explained in detail (I like that) what he was doing and what to expect. Very happy with this experience.

Ken H. Vonore, TN

They are SO nice there. Dr. K answered every one of my questions, even the silly ones. He has a wonderful, calming manner, and a good sense of humor.

KC J. Knoxville, TN

Dr. Gaudry was awesome. He explained everything that was going to happen during the procedure.

Kathy S. Maryville, TN

Excellent patient care. Dr K explained each step of the procedure as he was working. His Tech Torie was very good too. Dr K called me at night after the procedure just to check on me. Highly recommended for any and all of your Endo work!!

Mark M. Maryville, TN

Office was able to get me in quickly, Dr. Gaudry fully explained entire process and options, very professional and thorough thru procedure, pain management was exceptional for entire procedure. Add on the fact that this physician served our country proudly, a team that can't be beat! Entire office staff/ancillary staff were exceptional!

J Kropp in Maryville, TN

Dr. Kalchthaler and staff - Overall a GREAT experience!

B. Miller Alcoa, TN

I have never experienced the professionalism, caring, and friendly atmosphere from any organization albiet medical or otherwise.  Thank you,

Richard N.

The experience in your office was fantastic.  Everyone was helpful and pleasant.  I can say that I do not like having a root canal, but the experience there makes it much better.  I appreciate the professionalism of each and every person in the office.  Dr. Gaudry is wonderful and very courteous and professional.  His calm and quiet demeanor puts you at ease.  The flowers are a nice touch too!

Cathy H.

Dr. Kalchthaler Excellent dental surgeon. Explained everything before and as it happened and fully discussed the options available to me. I could not have asked for anything more from a dental surgeon.

Dr. Jim C. Gatlinburg, TN

A little word of thanks....for a whole lot of nice!

Thank you for the great experience I had in your office. The words "Root Canal" were dreaded by me but after my visit in your office I have different feelings.

Thank you to a wonderful office and staff.

Becky C.

Foothills Endodontics Providers and Staff Members
Mark E Kalchthaler, D.M.D., Endodontic Specialist

Dr. Mark E. Kalchthaler obtained an Associate degree in radiologic technology from the Community College of Allegheny County followed by a Bachelor of Science in radiologic technology from LaRoche College.  He worked as a radiologic technologist prior to and during dental school.  Dr. Kalchthaler received his dental medical doctorate from the University of Pittsburgh School of Dental Medicine in 1998 and was inducted by his instructors into the Omicron Kappa Upsilon academic honor society.  He then completed a two year endodontic residency at the University of Pittsburgh and was awarded a certificate in endodontics in 2000.  Prior to relocating to Maryville, Dr. Kalchthaler practiced conventional, surgical and microscopic endodontics in the Boston area for the past ten years. 

Dr. Kalchthaler,and his two boys are very excited to be living in Maryville.  Dr. Kalchthaler's interests include outdoor family time, especially exploring new places with his  boys.  He also enjoys trail riding his KTM motorcycle, home remodeling, mechanical/autobody repair, and golfing.

Derek A. Gaudry, D.D.S. Endodontics Specialist

Dr. Derek A. Gaudry earned a Bachelors of Science Degree in Psychology from the University of North Dakota in Grand Forks. He accepted a commission as an officer for the United States Army in 2001 and attended the University of Minnesota School of Dentistry in Minneapolis as a recipient of an F.Edward Hebert Armed forces health profession scholarship. He earned a Doctorate of Dental Surgery in 2005 and served as a general dentist at Ft. Campbell KY until 2012. While stationed at Ft. Campbell, Dr. Gaudry completed a one year tour of duty in Afghanistan assigned to the 101st Airborne Division in support of Operation Enduring Freedom. Dr. Gaudry completed his Endodontic specialty training at Eisenhower Medical Center at Ft. Gordon, GA. Most recently, he provided specialty care for Soldiers, Sailors, Airmen, and Marines at Joint Base Ft. Sam Houston, TX. Dr. Gaudry is dedicated to providing compassionate quality Endodontic care.

Dr. Gaudry and his wife Angie are happy to return to TN following their adventures with the Army. They met during high school and have two adult children (Bailey and Aidan) who graduated from Rossview High School in Clarksville, TN.

Dr. Gaudry and his family have been fans of the Nashville Predators and attending games since moving to TN in 2005. They also enjoy spending time at the beach.

Serena Loveday, Office Manager

Serena has 30 years of Management experience in the healthcare industry. She serves our needs maintaining the day to day business activities, financials, and supervision of staff with direction. Her focus is on meeting the individual needs of our patients and staff. She enjoys outdoor activities and spending time with family and friends.      

Emilee Branam, R.D.A./C.D.A. Front Office & Clinical Supervisor

Emilee serves our patients with clinical care and as a digital imaging expert. She is responsible for organizing and ordering the office dental supplies. She also specializes in quality performance as front office team member. She is cross trained to be utilized in all areas of our practice. Emilee is married with one child. She enjoys spending time with her family and participating in out door activities with her husband.

Tori Upchurch, R.D.A.

Tori provides outstanding care to meet the needs of our patients and staff. She is an expert in digital imaging and excels in clinical care. She enjoys working out, eating Chick-Fil-A and spending time with family and friends. She also enjoys activities with her church.


Lindsey LaGrange, R.D.A.

Lindsey enjoys working in the dental field providing excellent care to our patients. She loves the outdoors and spending time with her boyfriend and family. We enjoy Lindsey cooking for the office and making her special salsa.   


Sara Pressley, R.D.A.

Sara has over 20 years of experience in the dental field. She provides outstanding patient care and brings a passion for those in need. Her years of being in the field are an inspiration and encouragement for the staff starting out in the dental field. She enjoys reading, exercising and spending time with her husband and son.    

312 High St
Maryville, TN 37804

(865) 982-8000
(865) 982-8512