September 24-25, 2021 | #MDHAConference

Ruthann Zamarro headshot

Ruthann Zamarro RDH

Ruthann Zamarro is proud to be a long time member of The American Dental Hygienists’ Association. She has served as the Business Manager for ADHA Massachusetts since 2008, and the Secretary for the Worcester Component of ADHA Massachusetts since 1998. Her most challenging position to date has been taking on the role as the Sponsor/Exhibits Chair for “The MDHA Conference” since 2008. Ruthann was the proud recipient of the Massachusetts Dental Society’s Hygienist of the Year Award in 2013, recognizing her accomplishments and contributions to the advancement of Dentistry. She is now retired from Clinical Dental Hygiene after 47 years of practice, but continues her Business Manager, Secretary, and Sponsor/Exhibits Chair volunteer positions part-time. Ruthann will always be a Dental Hygienist at heart, but now, she enjoys spending her time at home happily caring for her growing family.

Sandy Nicholas headshot

Sandy Nicholas RDH, BS

Sandy Nicholas RDH, BS has served as The Conference chair/event director in 2010 and then again from 2013 – 2019. Her role includes helping to create The Conference theme and program, recruiting speakers and working with fantastic dental professionals to facilitate an exciting Conference experience.
Sandy is an alumni of the Middlesex Community College dental hygiene program. She received her BS in Psychology from Salem State University. Sandy has served in various leadership roles in MDHA including serving as president from 2011 – 2012. She is currently employed as a clinical hygienist on the North Shore and in her spare time loves playing with her grandchildren and traveling the world with her daughters and her Mom.

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Barbara Sheerin RDH, MEd

Barbara Sheerin is a retired Professor of Dental Hygiene after a long and rewarding career.

She has served as President of the Massachusetts’s Dental Hygienist Association as well as other various leadership positions. Today she is the Administrative Assistant for the Massachusetts Dental Hygienist’ Association.


Julie Cady headshot

Julie Cady, RDH

Julie Cady, RDH has been an active member of ADHA since 2016. Julie showed commitment to her student organization as Class Treasurer from 2016-2018. After being selected as a student delegate to attend the Annual Session in 2018, Julie’s passion and dedication to the dental hygiene profession has grown. She currently serves as the Assistant to the President of MDHA, Kate Soal.  Julie graduated with an Associate’s Degree of Science in Dental Hygiene from Quinsigamond Community College in 2018. She currently works as a clinician in a private practice.

Julie and her husband, Dan, have 2 young children. She enjoys family time, sports and outdoor activities.

Traci Sullivan headshot

Traci Sullivan CEM

Traci Sullivan is an end-to-end Event Director who takes a wide view of the whole process. She is a Certified Event Manager (CEM) and has been a professional in the event industry for 17 years.


Traci understands the ins and outs of the industry, having worked in some ways on all sides the business has to offer. She is currently the Marketing Manager for MDHA’s The Conference 2019 and outside of the office likes to spend time with her husband Sean and her two Great Danes.

Jennifer Singel, RDH

Jennifer has been a registered dental hygienist for over 25 years. She was previously employed at an office for seventeen years before joining our team at Triangle Street Dental in 2018. She is actively involved in The American Dental Hygienists’ Association-Massachusetts having held various officer positions at both the state and local level. In her free time, she enjoys boating with her husband and traveling to historic landmarks with her sister.

Pam Lacerte headshot

Pamela LaCerte, RDH

Pamela LaCerte is a graduate from QCC. Since graduation she has been actively involved in MDHA and ADHA. Her passion for dental hygiene has always made MDHA a large part of her hygiene career. She has held many positions and volunteered for numerous committees over the years including being President for the Middlesex component, the MDHA Volunteer Coordinator, MDHA secretary, MDHA Vice President, Delegate for ADHA and MDHA, Alternate Delegate for ADHA, Presiding chair and Room coordinator for MDHA and Yankee Dental Congress. She currently is the President Elect for MDHA. She is a practicing clinical hygienist and recently the recipient of the Yankee Dental Volunteer Auxiliary of the Year.

Virginia Heroux headshot

Virginia Heroux, RDH, MS

Virginia currently serves as Vice President of ADHA-Massachusetts (MDHA) and is the former Chair of MDHA’s Council on Education and Research. She has been an RDH for over 30 thirty years and has practiced her beloved dental hygiene profession in MA, CT and RI. Virginia now teaches Pharmacology and Dental Hygiene Process of Care to 2nd year students and Anatomic Science II to first year students at Mount Wachusett Community College. She shares her passion for Dental Hygiene with her students by serving as an advisor to the Student ADHA Dental Club. Her advice to all RDH’s is to “Stay Involved” in your profession because “You are the Future of Dental Hygiene!”

Sarah Crow headshot

Sarah Crow RDH, BS

Sarah Crow is a 2014 Dental Hygiene graduate of Middlesex Community College where she earned High Honors, was selected for Dean’s List, a member of the Phi Theta Kappa Honors Society, and was elected Class President for two consecutive years.

Sarah was awarded the “Outstanding Student in Dental Hygiene” award, elected by full faculty, the “MCC’s Finest Student Award “elected by the college President, and was named “Member of the Year” by MCC’s Center for Leadership and Engagement.

Sarah was nominated as Commencement Speaker during her Professional Pinning Ceremony, where she was also given the role of Class Marshall.

At the 2015 Yankee Dental Congress ~ Student Business Meeting, she accepted the role of “Master of Ceremonies” where she addressed students, and national leaders on “The Power of Belief”.

Currently, Sarah works as a clinical hygienist in Lynnfield, MA where she is given the opportunity to exhibit her passion in Dental Hygiene chair side, while continuing her degree in the field of Dental Hygiene education. She currently holds the position of Chair, for the Council on Public Relations for ADHA Massachusetts, is the co-founder of MDHA’s Mentor Liaison Team, and is an integral part of planning MDHA’s yearly conference. Sarah continues to volunteer her time both clinically and professionally while raising her large family.

Paula Morrison headshot

Paula Morrison, RDH, BS

Paula Morrison is a proud member of the American Dental Hygienists’ Association and has served in many different positions for the Massachusetts Dental Hygienists’ Association. Since her graduation in 2008, she has been actively involved, first starting as membership chairperson for several years then moving into line-officer roles. Currently, she serves as the co-chair of the MDHA Mentor Liaison Team and her commitment to the association is evident by the work she has done in these roles. She loves spending time with family and enjoys traveling, running long distance, biking and cooking.