Meet the Dentists.

Therese Susienka, DMD, FAGD

Dr. Therese (pronounced "Teresa") is the founder and General & Cosmetic Dentist of Pleasant Valley Dentistry. She established this office in 2017 after working in two family practices in central Massachusetts, with a desire to offer a dental experience that merged her passion for cosmetics and comprehensive dental healthcare. She has infused her thorough nature into the philosophy of Pleasant Valley Dentistry, where all care providers are passionate about spending time with each of their patients, getting to know their specific needs, and providing meticulous dental care.

Dr. Therese has a strong commitment to professional growth, and spends much of her free time traveling for advanced dental training with internationally renowned mentors in the field. Since earning her degree, she has averaged well over 100 hours of advanced continuing education every year, an amount that far exceeds the biennial requirement of 40 hours. Dr. Therese was awarded her Fellowship in the Academy of General Dentistry in the summer of 2020, a title which requires 500 hours of continuing education and an exhaustive examination, and is only currently held by 6% of dentists nationwide. She is currently in pursuit of her accreditation with the American Academy of Cosmetic Dentistry, a prestigious recognition only awarded after passing a written and oral examination and having numerous cosmetics cases reviewed by a selective board of cosmetic dentists. She also has a passion for service, and has traveled on multiple mission trips to provide dental care to poverty-stricken communities in Central America. 

Dr. Therese was born & raised in southern New Hampshire, but has called Massachusetts her home for nearly 20 years. She currently resides in Sutton with her husband Michael, their two young children, three cats, and several chickens. In her free time, Dr. Therese is often spending time with family locally, or in New Hampshire, and enjoys yoga and gardening.  

Dr. Therese is an active member of the American Academy of Cosmetic Dentistry, the American Academy of Clear Aligners, and the prestigious Kois Center for Dental Excellence.

Tom Hernon, DMD

Dr. Tom Hernon is a dedicated General Dentist who takes pride in delivering exceptional, compassionate care to the Pleasant Valley Dentistry community. He graduated magna cum laude from Tufts University School of Dental Medicine and went on to complete a General Practice Residency, receiving advanced training in complex dental treatments and the care of medically compromised patients. Mirroring the practice’s thorough and patient-centered philosophy, Dr. Tom deeply values getting to know each of his patients personally, educating them on their oral health, and partnering with them to achieve their unique dental goals.

Committed to providing the highest standard of modern dentistry, Dr. Tom is passionate about his professional growth. He continually seeks out advanced continuing education and implements the latest dental technologies into his daily practice. He is currently enrolled in the prestigious Boston MaxiCourse to advance his expertise in implant dentistry and has completed the comprehensive Clinical Mastery Series in Occlusion. This dedication to lifelong learning ensures his patients receive the most effective, functional, and comfortable care possible.

Outside of the office, Dr. Tom enjoys spending time with his wife, Kelly, and their two children. He can often be found staying active through running and cheering on his favorite New England sports teams. He also enjoys unwinding at home by tackling DIY home improvement projects and mastering new recipes in the kitchen.