Welcome to Mass Ave Perio!

As a periodontal and dental implant specialty practice, our mission at Mass Ave Perio is to deliver the highest level of care to our patients. Our experienced periodontist, Dr. Sarah Courtney, and team take a whole-body and minimally invasive approach to care that also supports your overall health and wellness. We look forward to helping you enjoy a happy, healthy smile and lifestyle!

Periodontics & Dental Implants using the latest technology throughout the Massachusetts cities of Arlington, Lexington, Cambridge, Belmont, Somerville, Medford, Waltham, Watertown, and Winchester.

Dr. Sarah Courtney, DMD

Dr. Sarah Courtney completed her specialty training in Periodontics at the University of Maryland School of Dentistry, and received her DMD degree (Doctor of Medicine in Dentistry) at Boston University Goldman School of Dental Medicine.

As a native of the area, she is one of many dentists in her family. Her father, Michael Courtney, opened the office at 355 Mass Ave, Arlington, in 1980. She is thrilled to be re-opening her father’s practice and to have the privilege of providing periodontal care to the community of Arlington and surrounding towns. In addition to her father, Dr. Courtney’s brother and sister are both dentists, so as you can imagine there is a lot of teeth talk during holiday gatherings!

Dr. Courtney loves what she does and it shows - if there is any thing in particular that will make you, the patient, more comfortable or allow you to have better experience with us at Mass Ave Periodontics, please let us know!

When Dr. Courtney isn’t at the office, she is with her husband, and two children. She loves spending time with family and enjoys playing/watching sports, especially ice hockey. Dr. Courtney was the co-captain for the Boston College Women’s Ice Hockey Team and helped make history as a member of the teams first Beanpot win in 2006! She recently started playing golf and loves it!


Mass Ave Periodontics specializes in a variety of periodontal procedures!

Location & Parking

Mass Ave Perio is located in East Arlington (across the street from Walgreens and the adjacent gas station). Parking is best on Massachusetts Avenue or on a side street (Wyman Street). Both streets have no meters, however Massachusetts Avenue has a 2 hour limit. For any questions, please contact us: (781) 646-3100