Progressive Dental Care With a Personal Touch

About Us.

If you are looking for highly trained, experienced and compassionate dentists in the Merrimack area, you have come to the right place. At our practice, you will receive the highest quality dental care. Our dental office uses the latest state-of-the-art equipment and cutting edge technology and we uphold the strictest sterilization techniques. We know that many people may feel anxious about coming to the dentist, so it is our goal to make your visit with us as pain and anxiety free as possible. We view it as our mission to educate our patients about all of their oral health care options and to help guide them to choose a treatment plan that is most suitable and appropriate for their needs.

Our Appointments.

To make an appointment, simply call us at 603-424-7676 or fill out the form on our Appointment page. Please note that medications will only be prescribed for patients who have recently been seen in our office. In an emergency, call our after-hours number for instructions on reaching a doctor.

Payment Options.

We accept personal checks as well as Visa, MasterCard, American Express and Discover credit cards. We also offer no interest or low interest financing through CareCredit. We submit claims to all dental insurance plans and participate in most major dental insurance plans including Delta Dental and Metlife. To get more information on the benefits of your specific dental insurance plan, please call us.

Mark S. Morris, D.D.S.

Dr. Mark S. Morris grew up in the small town of Rangely Colorado with his loving family of six. As the oldest of four children, Dr. Morris was the first to leave for college attending Adams State College in Alamosa, Colorado. Dr. Morris balanced academics and athletics at Adams State University, earning his B.S. degree in Cellular and Molecular Biology while playing intercollegiate football and club rugby. His interest in the anatomy and physiology of the human body as well as his affinity for problem solving and fixing things, is what initially led him to the field of dentistry.

After attaining his undergraduate degree, Dr. Morris went on, to work with children, in a pediatric dental practice. Dr. Morris later matriculated and graduated from the University of Colorado Denver, School of Dental Medicine. In 2011, Dr. Morris completed a General Practice Residency in Hospital Dentistry at the University of Colorado. The residency provided advanced education and training in comprehensive dentistry including extractions, root canals, pediatrics, prosthodontics, emergencies and implant dentistry. Throughout his dental career, Dr. Morris has committed himself to becoming an exemplary dentist, providing his patients with quality dentistry in a comfortable environment. Dr. Morris is a member of the following:

  • Academy of General Dentistry
  • American Dental Association
  • New Hampshire Dental Society
  • Nashua Dental Society
  • SPEAR Study Club


Dr. Morris, his wife Maggie and their children, Owen and Audrey, enjoy living in Merrimack and being part of such a wonderful community. Owen is a ball of energy, can make friends anywhere he goes, is hilarious and a great big brother. Audrey loves her brother and her favorite thing to do is smile. Some of the Morris’s favorite things to do are: spending time together as a family, hiking, going on day trip adventures, spending time on Cape Cod or simply playing in the yard.

Dr. Morris enjoys being a “family dentist” and treating people of all ages. Dr. Morris feels fortunate that he is able to help his patients while also getting to know them for years to come.

Thomas P. Suranyi, D.D.S., M.S.

Dr. Thomas Suranyi was born and raised in Lancaster, Ontario, Canada. He is one of five children all of whom have settled in the United States. Dr. Suranyi is first generation Canadian, his parents settled in Canada from Hungary in 1968. He grew up speaking English, French and Hungarian and enjoying the many traditions from the cultures he was a part of. Dr. Suranyi moved to the United States, in 1997, to attend the University of Rochester earning his B.S. in both Chemistry (cum laude) and History.

Following undergraduate, Dr. Suranyi attended Dental School and an Advanced General Practice Residency at Columbia University’s School of Dental and Oral Surgery, in New York City. In the summer of 2011, he completed his Prosthodontic training at the University of North Carolina at Chapel Hill. While at Chapel Hill he was awarded the American College of Prosthodontic Fellowship Award, the the American Equilibration Society Research Fellowship Award, the Elsie & Baxter Sapp Fellowship Award, and a Stanley D. Tylman research grant from the American Academy of Fixed Prosthodontics. More notably he was awarded 1st place in the 2010 American Prosthodontic Society Graduate Research Competition. After graduation Dr. Suranyi began a four year service commitment with the United State Navy, and was stationed at the Marine corps Recruit Depot on Parris Island and the Marine Corps Air station. During his time with the Navy, Lieutenant-Commander Suranyi served as Department Head for Prosthodontics, Chairman of the Implant Board, Dental Laboratory Officer and President of the Lowcountry Dental Study Club. His greatest pleasure, however, was providing Prosthodontic care to Navy personnel and Marines.

When not working, Dr. Suranyi enjoys cooking, reading, hiking and exploring all that New Hampshire has to offer with his son and daughter.

Dr. Suranyi shares our commitment to provide exceptional dentistry in a welcoming and caring environment. He has excellent communication skills and, like the rest of us at Merrimack Smiles, enjoys building lasting relationships with his patients.

What is a Prosthodontist?

A Prosthodontist is a dentist who has completed a 3-year residency program earning a certificate and master's degree in Prosthodontics. Prosthodontists are specialists in dental implants, cosmetics (esthetics), TMD concerns, crowns, bridges, dentures, complex dental reconstructions, and have in-depth knowledge of dental literature, materials and treatment techniques.

Prosthodontics is one of the nine dental specialties recognized by the American Dental Association (ADA). When multiple specialists are involved Prosthodontists are the leaders of the dental team, as they are trained to organize and coordinate everything from simple to the most complex dental treatments.

Patients may seek care of a Prosthodontist directly. However, in some circumstances, depending on complexity or the need to develop a more detailed treatment plan, a patient may be referred to a Prosthodontist to have those needs addressed.

The addition of Dr. Suranyi to the Merrimack Smiles team ensures we can continue to provide our patients with the quality care they deserve no matter how complex.