Dental Staff

"Thank you to Dr. Tina and your staff for providing me excellent service today. My crown is beautiful and you were able to do it from start to finish in 90 minutes. 5 stars!"
~ Stu W.

All professionals at Tina Theroux, DMD maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. Read on to learn more about our staff's experience and training.

Meet Our Doctors

Dr. Tina Theroux

Dr. Tina Theroux has practiced Family & Cosmetic Dentistry in both Connecticut and Massachusetts. She is a graduate of the University of Connecticut School of Dental Medicine and completed her residency at St. Mary’s Hospital (an affiliate of Yale University). Licensed to practice by the State of Massachusetts, Dr. Theroux is affiliated with the American Dental Association, Massachusetts Dental Society, and the Worcester District Dental Society.

As a proud member of the Grafton community, Dr. Theroux loves serving and donating to virtually all local causes. She is a married mother of three girls who grew up in Grafton. Dr. Theroux loves having the opportunity to share her knowledge and mentor young students interested in pursuing a career in dentistry. 

Dr. Alisun Kovach

Dr. Alisun Kovach, a Pennsylvania native, graduated from Mercyhurst College in 2005 with a Bachelor of Science degree in Biology. She moved to Boston in 2006 to further her studies in science and obtained a masters degree in Medical Sciences with a concentration in Oral Health Science from Boston University, where she continued on to complete her dental training. She graduated Magna Cum Laude from Boston University School of Dental Medicine and received several awards including Outstanding Achievement and Excellence in Patient and Practice Management and The International College of Dentists Leadership Award.

Since graduation, Dr. Kovach has taken numerous multidisciplinary continuing education courses, which allows her to provide the most comprehensive care possible to her patients. Dr. Kovach works hard to restore patients' confidence in their smiles and takes the necessary time to listen and understand their concerns. She takes pride in educating her patients to help them understand their dental needs and works with them to establish a “game plan” to help them reach their goals.

Richard Opler

Dr. Richard Opler grew up in Washington State and is a graduate of the University of Washington School of Dentistry in Seattle. He earned his bachelor’s degree at New York University with a double major in History and Economics, and is a married father of two girls.

Dr. Opler believes in evidenced based dentistry, where dental treatments should be recommended based upon sound science. He has worked to further the body of dental knowledge and has been actively involved in dental materials research since 2010. He has been published several times including in the *Journal of Prosthetic Dentistry*, *The* *International Journal Oral Maxillofacial Implants*, and he co-authored a chapter in the textbook *Cementation in Dental Implantology*. In 2016, Dr. Opler was the recipient of the Academy of Dental Materials Award.

Meet The Team

Our staff includes certified dental assistants, licensed registered dental hygienists and an experienced business office staff. All of us look forward to making your visit enjoyable and stress-free.

Front Desk

Jen Ferguson, Practice Manager

Rhonda Valanzola, Business Manager

Kenzie Otoole, Business Assistant

Diane Nikstenas, Business Assistant

Tina Ayotte, Business Assistant


Gwen Vignali, RDA

Melissa Connors, RDA

Sarah O'Donnell, RDA

Kayla Catalano, RDA


Patty Alarie, RDH

Melanie McCorison, RDH

Tara Pichette, RDH

Rod Jensen, RDH