Meet the Doctor


profile pic Dr. Polgrean earned her bachelor’s degree in Sociology at Bates College in Lewiston Maine. She continued her education at the University of Pacific School of Dentistry in San Francisco earning her Doctorate of Dental Surgery as well as her master’s degree in Orthodontics. Dr. Polgrean became a board certified Diplomate of the American Board of Orthodontists in 2005.

Professionally, Dr. Polgrean is affiliated with the American Association of Orthodontists, American Board of Orthodontists, American Dental Association, New Hampshire Women’s Dental Society, New Hampshire Association of Orthodontists, Northeastern Society of Orthodontists, Granite State Dental Society and the Londonderry Chamber of Commerce.

In her spare time, Dr. Polgrean enjoys hiking, running, camping and spending time with her husband and three daughters.

Patient Testimonials

  • “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