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COVID-19 Update

We request all patients wear masks when entering our office. Patients Only for visits unless extenuating circumstances. Upon arrival to the office text to check-in 603-493-6201. We will let you know when you can come into the office.
Thank you!

Welcome to
Appletree Orthodontics!

Orthodontist in Londonderry, NH

Dr. Polgrean and her highly trained staff have been creating beautiful smiles in Londonderry, Derry, Hudson, Salem, Manchester, Litchfield, Windham, Candia, Raymond, Hooksett, and surrounding areas for over 25 years. Our doctor and staff attend numerous continuing education courses throughout the year as part of our commitment to providing you with the highest quality of care.

Our dedication to providing extraordinary personal service with compassion and consideration to the unique needs of each of our patients is our top priority. We feel open communication is extremely important in creating a positive environment for our patients and insuring a successful treatment outcome.

At Apple Tree Orthodontics we utilize the latest technological advances in the profession to achieve unsurpassed results for our patients. In addition to “clear” braces, Invisalign clear aligners, and Teen Invisalign clear aligners, we offer low radiation digital radiography, and a “no impression” intra-oral scanner eliminating the need for traditional impressions. We have extensive experience in treating more complex cases which may require orthodontics in conjunction with jaw surgery. Our team works closely with several oral surgeons in the Boston area.

Here at Apple Tree Orthodontics, we recognize that each patient has unique needs, and we pride ourselves in tailoring our treatment to meet these requirements. Whether you are an adult, adolescent or child, our knowledgeable team is committed to helping you achieve the smile you deserve – a healthy, beautiful, self-confident one that will last a lifetime!"

Meet The Doctor

Helpful Information

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Your First Visit
Fear of the unknown is human nature and some nervousness is to be expected prior to starting orthodontic treatment. We strive to erase your fears and make you feel comfortable.
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Scheduling
Our goal is to allow you to be seen on time for your appointment, make appointments as stress free for you as possible, and to minimize interruptions to your busy schedule.
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The Right Age
Orthodontists today can successfully correct most problems regardless of the patient’s age. But that does not mean that the orthodontic treatment starting age does not matter.
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For Adults
Parents are still making regular trips to the orthodontist's office, but for themselves as the patient. We offer a variety of treatments that are designed for different age groups.
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Patient Testimonials

  • “I decided to do the Invisalign treatment after my daughters had such great experiences at Appletree Orthodontics. I am thrilled with my results! The entire staff is so positive, friendly, and experts at their jobs! Choosing Appletree Orthodontics is the best choice!”
    ─ Kristen
  • “They are so sweet and make the best out of each visit. They are very safe during Covid and make sure each customer is satisfied.”
    ─ Caitlin
  • “So so nice, supportive, and kind! made braces a fun and easy experience! :)”
    ─ Bridget
  • “I have just gotten my braces off after only two years. The care here is amazing and everyone is super nice. I promise if you do what they say then your teeth will be fixed. I never really liked my teeth so i am so happy to finally be confident in my smile. Thank you Apple Tree for my dream smile.”
    ─ Paige
  • “The orthodontist is all funny, great to talk to, and really sweet and kind. They make me going to the ortho appointments seem fun! At least to me. They all deserve 5 stars no matter who is working there. I'm proud to be their patient there and proudly say they're my orthodontists!!!”
    ─ Alyssa
  • “I couldn’t have asked for a better orthodontic company. They are always so gentle and caring. I never have to wait for my appointment for more than five minutes, even when I’m early. I highly recommend Apple Tree!”
    ─ Kathryn
  • “I’ve been coming here since 5th grade and haven’t had a bad experience and i just got my braces off today! everyone is so friendly and makes coming to appointments fun. would definitely recommend!”
    ─ Abby
  • “Apple Tree Orthodontic is an all around great place. The people there are fantastic. They’re always smiling always asking how your day is. I never had any bad experiences there due to the fact that they are awesome. 10/10 recommended coming here for your teeth!”
    ─ Gavin
  • “I had an amazing experience here. Everyone was so helpful and nice, and they really made sure my teeth looked 100% perfect.”
    ─ Joshua
  • “My two teens just finished up treatment and we are very happy. They both look great. The staff is awesome, friendly and knowledgeable.”
    ─ Elizabeth
  • “Three children went through braces at Apple Tree Orthodontics. We were 100% happy with the plan, communication throughout, all medical & non-medical staff, and the caring care we received over the years, Highly recommend!”
    ─ Danyelle
  • “Great experience! Got my braces on late (junior year of high school) and they were sure to work quickly and efficiently to give me the best experience possible. Couldn’t be happier with how my smile turned out!!”
    ─ Cassidy
  • “Fantastic experience. My kids love the place and the people. Great doctors and very friendly staff.”
    ─ Anand
  • “Wonderful experience with my 14 year old son! Feedback at each appointment and walked him through the whole process. Very sweet team and fantastic service!”
    ─ Sara
  • “Always very friendly and my teeth look great. I could not be happier with my experience.”
    ─ Dylan
  • “This is the definition of a family orthodontist. Calm and soothing environment making you feel right at home in this office. Fantastic service and couldn’t be better. A+”
    ─ Billy
  • “Such a fun group of people. They are sweet and accommodating. They are almost always on time and even can take you earlier occasionally. Not like other places. The best place.”
    ─ Rosemarie
  • “Great group of people. Very nice as well. Would give six stars if I could.”
    ─ Herve

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