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Meet The Doctors

Dr AbernethySaba K. Abernethy, D.M.D., F.A.G.D.

Dr. Saba K. Abernethy is a native of Malden on the North Shore area of Boston. She attended Brandeis University followed by the Boston University School of Dental Medicine then a residency of General Practice at the VA in Augusta, Maine. Since dentistry is a passion for her, she pursued her Fellowship with the Academy of General Dentistry where she passed a rigorous board exam and completed many additional hours of continuing education. Dr. Abernethy’s fellowship represents that she is one of 6% of General Dentists in the United States with this designation.

Dr. Abernethy is the Chairperson of Continuing Education for the Massachusetts Academy of General Dentistry and serves on the Board. When she is not in the office or home with her family, she can be found at a number of dental lectures because of her deep commitment to learning in our evolving field of dental medicine. Dr. Abernethy is one of the founding members of The Study Club for Dental Excellence, a member of the American Dental Association and the Massachusetts Dental Society.

Dr. Abernethy lives in Norfolk county with her husband and 2 young children. She loves playing tennis, singing with the car radio and traveling.


Dental Director, Brockton Neighborhood Health Center
General Dentist, Diamond Hill Dental
Captain, Massachusetts Army National Guard

Currently, Dr. Fidelito Gabriel practices out of two dental offices, and he is a dental officer of the Massachusetts Army National Guard. In 2015, he was deployed to Afghanistan as part of Operation Enduring Freedom. As the Dental Director at Brockton Neighborhood Health Center, he manages a staff of thirty- three dental professionals providing quality dental care in the city of Brockton, Massachusetts. In June 2018, he joined Dr. Saba Abernethy at Diamond Hill Dental as an associate dentist.

In the past, Dr. Gabriel was a mentor to pre-doctoral students attending Boston University School of Dental Medicine and Tufts University School of Dental Medicine. As a member of the Hispanic International Mission, he visited Haiti, Dominican Republic, and Islands of Cabo Verde during multiple humanitarian missions to provide vital dental services to people with little to no access to dental care. Prior to Dr. Gabriel’s current roles, he was a general dentist at Codman Square Health Center providing dental services to low-income members of the surrounding communities of Greater Boston and nearby cities for four years. From 2009 to 2011, Dr. Gabriel was a serving board member of the Board of Trustees for Smith Leadership Academy, which is an inner city charter public school.

Dr. Gabriel holds a Bachelor of Science in Human Physiology and a Doctorate of Dental Medicine in General Dentistry from Boston University. He credits his career path to the basic-science education, professional trainings, mentoring and overall experience he received at Project Success, a program at Harvard Medical School for Boston inner city students, while he was a young high school student.

Dr FidelitoDr. Betty Gattereau, D.D.S, C.A.G.S.

Dr. Betty graduated from Meharry Medical college and completed her advanced education in general dentistry residency earning her Certificate of Advanced Graduate Studies (CAGS) training at Family Health Center of Worcester in Massachusetts. Her professional dental career began at Whittier Street Health Center; then she continued to Brockton Neighborhood Health Center. At Brockton Neighborhood Health Center, the Chief of Operations and Dental Direct noticed her exceptional leadership, outstanding clinical services, respect among her peers, and demonstration of sound knowledge of the theories and principles of the practice of general dentistry, so they created the position of Assistant Dental Director to aid in guiding the dedicated team. During many years working at the health center, Dr. Betty participated in many workshops to further clinical practice of advanced cosmetic dentistry. After many conversations with Dr. Saba Abernethy, it was clear they shared similar philosophies in practice of cosmetic dentistry, so Dr. Betty decided to join this technologically advanced cosmetic practice and the excellent team at Diamond Hill Dental.

Dr. Betty lives in Milton, Massachusetts with her husband and her wonderful daughter. Being healthy is an integral part of her life so her weekly routine includes Cross Fit. She loves watching football and cheering her Patriots to victories. However, she is most passionate about providing exceptional dental care, and loves every moment of making her patients happy by improving their smiles.

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Our Location

2343 Diamond Hill Rd | Cumberland, RI 02864

Office Hours

Our General Schedule


9:00 am-5:00 pm


9:00 am-5:00 pm


10:00 am-6:00 pm


9:00 am-5:00 pm




8:00 am-1:00 pm

1 Saturday Per Month, Sept - May