Our doctors have been working together for more than 31 years, providing patients in upper Montgomery County optimal dental healthcare and wellness for a lifetime.

Our incredible results are inspiring! Check out some of our patients' before and after photos to see their journey to a new smile.

Stiles Dentistry provides care above and beyond, but don't just take our word for it. Read what some of our patients have to say!

What Patients
are Saying

You deserve to receive treatment in a practice that makes you feel comfortable. Schedule an appointment or stop by for a complete tour of our practice.

Your
First Visit

Welcome to Stiles Dentistry

Welcome to Stiles Dentistry. Dr. Dennis Stiles and Dr. Marie Tigani Stiles have been providing comprehensive dental care to patients in Gaithersburg, the Kentlands, and Montgomery County since 1986. The doctors and team at Stiles Dentistry take great pride in working with each of our Gaithersburg dental patients to diagnose, treat, and educate patients on maintaining good oral health.

Our mission is to give patients the tools and guidance necessary to achieve their own dental goals. Please use this website to learn about some of your treatment options, including Invisalign® invisible braces, TMJ treatment, IV sedation dentistry, sleep apnea appliances, dental implants, restorative dentistry, cosmetic dentistry, teeth whitening, and more.

Patients can count on being treated in a comfortable, family-friendly, state-of-the-art facility by doctors and a team who respect their patients’ needs and concerns. At Stiles Dentistry, we strive to give our patients the treatment and information necessary for optimal dental health and wellness for a lifetime.

We look forward to being your Gaithersburg and Kentlands, Maryland dentists. Call our Gaithersburg, MD dental office today to schedule an appointment.

With Hybridge dental implants, your teeth can look, feel, and function more naturally than you ever thought possible.

Patient Reviews

“This is the best dental practice I’ve found. Drs. Stiles are both wonderful! They are friendly, professional, honest, and interested in their patient's overall health (not just their teeth). They go out of their way to provide a relaxing and judgement free environment. They give their treatment recommendations without pressure and work with you as partners to achieve your best oral health. I always have the same hygienist for my checkups and Annelise is amazing. She is thorough and gentle and truly cares about your comfort!” ~ Julie

“The visit is to evaluate the potential dental issues and to prepare for dental work and related timeline. I had a productive and informative visit. The dentists Drs Marie and Dennis Stiles are courteous.. My dentist, Dennis is thoughtful, knowledgeable, and and an excellent communicator. The dental assistant is extremely helpful. I had a pleasant visit.” ~ Shumei

“My dentist retired and I am looking for a new dentist, my daughter recommended Stiles. I made the appointment for an initial consultation and was see by Dr Dennis Stiles. I was initially taken in for a "meet and greet" consultant where I had the opportunity to discuss what I was looking for in a dentist and Dr Stiles discussed his background not only in dentistry but what he looks for in trying to help his patients. And then we moved to the chair where he did an exam of my mouth. We did an overview of my dental health and areas where he could offer some needed dental care, and we discussed other dental options (whitening, etc), I never felt rushed, I had all my questions answered, I never felt like I was being pushed in one direction or that a procedure was being pushed on me. It was an EXCELLENT first visit and I came away feeling that they are very compassionate about their patients and the dental care they have to offer their patients. I would never say that I look forward to going to the dentist, but I'm glad to know that they would accept me as a new patient and I would highly recommend Stiles Dentistry!!” ~ Ben

“The Stiles Dentistry have been my family's dentists for over 4 decades. We have always had a positive experience with them. They provide concern for their patients with the latest technology, professionalism and care for their patients. The office is welcoming and friendly. We appreciate the care that they give, and highly recommend The Stiles Dentistry.” ~ Paula

“Dr Stiles and the entire team were remarkably kind, friendly, and thorough. In addition, Dr. Stiles works hard to understand and treat the patient (not just a mouth), to better come up with solutions that work well for the patient and in coordination with anything else relevant going on in their dental or medical care.” ~ Tim

“Excellent service! I had a filling today and Dr. Stiles did a wonderful job. Dr. Stiles listened to my concerns and addressed any issues I had. Morgan, the wonderful dental assistant made sure I was ready for Dr. Stiles and made sure I was completely comfortable. I have always had a fear of injections but since Stiles Dentistry is a sedation practice, they utilized tools that made my experience as painless as possible. The staff was welcoming and friendly and they all ensured my visit went smoothly and stress free. If you are looking for a new dental office, look no further than Stiles Dentistry you will truly have a one of a kind experience. Thanks again Dr. Stiles and your wonderful staff! ” ~ Heven

“If you're looking for a dentist, look no more. Stiles Dentistry is it. Dr. Stiles took the time to chat with me before we even started any procedure. And then he did the most comprehensive exam I have ever had ... ever. Yup, this is it: this is now my dentist ... and it should be yours!” ~ Judy

Our Vision

We are a place for extraordinary service and beautiful smiles. We are a place for all generations to have positive experiences: a place for patients and professionals to work together for a common goal. We help people recapture their smiles, improve their smiles, maintain their smiles from days gone by, and we help the younger generation to be prepared for the times ahead. By blending art, science and technology, we create the function and esthetics for a great foundation of oral health today and for the future.