Decoteau Orthodontics

Creating brighter smiles for brighter futures

Welcome to Decoteau Orthodontics

At Decoteau Orthodontics, we believe that a healthy, beautiful smile enhances your feelings about yourself. When you feel confident, you are able to be your brightest and best self. And when you shine, you are better able to create an amazing life for yourself. This is the driving force behind what we do at Decoteau Orthodontics, where we create brighter smiles for brighter futures!

Meet Our Doctors

For more than 30 years, Decoteau Orthodontics in our Groton MA orthodontist office and our Nashua NH orthodontist office has been dedicated to providing children, teens, and adults an orthodontic experience that makes you feel special, from the moment you first arrive until you “graduate” with the smile of your dreams. You become a member of our orthodontic family, and while we pride ourselves on providing exceptional orthodontic care using state-of-the-art techniques, it’s the bond we form with our patients that is most rewarding.

At Decoteau Orthodontics, you’ll experience
a new generation in orthodontic care!

Treatment for Children

The American Association of Orthodontists recommends that every child should be seen by an orthodontist by the age of 7. This doesn’t necessarily mean that treatment will begin then, but we will be able to monitor your child’s growth and development in order to be ready to start when the time is right. We invite you to bring your child in for a complimentary orthodontic evaluation!

Treatment for Teens

Every teen is unique, and it’s important that they receive personalized orthodontic care for their individual needs. We have a variety of options to choose from, including Invisalign teen, colored braces, and clear braces. For teens, orthodontic treatment is now easier, more comfortable, and results in an amazing new smile!

Treatment for Adults

If you think you’ve missed your chance to have beautiful, straight, healthy teeth, think again! Braces are for people of all ages. We’ll enjoy working with you to plan your orthodontic treatment, and now are able to offer Invisalign clear aligners and clear braces for virtually invisible orthodontic treatment. We offer the convenience, privacy and comfort that’s important to our adult patients.

Why is Decoteau Orthodontics The Right Choice For You?

Orthodontics is all we do

As board certified orthodontists, straightening teeth is our expertise! Dr. Jay Decoteau and Dr. Carolyn Decoteau have years of experience creating beautiful, healthy smiles for children and adults with braces and Invisalign. We will treat you as if you’re a member of our family.

Affordable Financing

We offer flexible payment plans, low down payments, and interest-free financing to help our fees work with every budget. Our affordable financial plans will give you something to smile about!

Convenient Hours

Our Groton and Nashua orthodontic locations offer convenient hours to fit your schedule. Life is busy, so we offer office hours to help you enjoy your life while creating your beautiful smile!

We love Our Community

We are invested in our Groton and Nashua communities. Your interests are our interests, and we are honored to be involved with and sponsor schools, sports teams, clubs, and charities in the Groton and Nashua area.

High-Tech Orthodontics

Excellence in orthodontic care requires utilizing state-of-the-art diagnostic tools (digital x-rays), treatment techniques (removable aligners), and sterilization procedures. These cutting-edge practices maximize your comfort, health, safety, and beautiful smile!

Patients Love Us

We love our patients, and they love us too! We enjoy getting to know our patients and their families, and love sharing the special moments in our patients’ lives. We are honored by the amazing reviews people write about us on Google, Yelp, and Facebook.

Office Hours
Office Hours
Day Hours
Monday 8:00 AM - 5:00 PM
Tuesday 8:00 AM - 5:00 PM
Wednesday 8:00 AM - 5:00 PM
Thursday 8:00 AM - 5:00 PM
Saturday CLOSED

Thank you for visiting our website. We hope it gives you a sense of what makes our team at Decoteau Orthodontics uniquely capable of providing your orthodontic care with personal attention, expertise, and professionalism. And if you still have questions, please call our office. We are eager to hear from you, and hope you’ll schedule a complimentary consultation for yourself or a loved one today!

"A confident smile makes you shine!"


“Dive into the personal journeys of our patients and witness the power of compassionate care.”

Dr. Decoteau and his team are amazing! They are all very friendly and make every patient feel so welcomed. I was very impressed with the office cleanliness, efficiency and check-in process during this on-going pandemic. I can’t thank them enough for my now, straight teeth! I would highly recommend their practice for anyone considering orthodontics.


Christine F

A truly life changing experience! Along with being some of the most amazing people to be around, their work was nothing short of perfection. I will recommend them to everyone I know. It was a pleasure being one of your patients.



Spencer C.

I have been an adult patient for the past 3 years. One of the best decisions of my life. I couldn’t have asked for anything better. Atmosphere is always warm and welcoming. The staff are professional and genuinely kind. Dr. Decoteau pays attention to detail and wants what’s best for you.


Dennis N.