News — CHICAGO, February 22, 2022 –– Nearly two years into the pandemic with widespread availability of COVID-19 vaccines and a decrease in infections, new studies reveal dental hygienists have low COVID-19 infection rates and high vaccination acceptance. In addition, less than half of dental hygienists that left employment early in the pandemic have returned to the workforce in 2021, and staffing challenges, exacerbated by the pandemic, persist.
The research, published in the February issue of , is part of collaborative research efforts between the American Dental Hygienists’ Association (ADHA) and the American Dental Association (ADA) on the impact of COVID-19 on employment, infection prevention and vaccine acceptance among dental hygienists. The data updated findings from a previous longitudinal study conducted over a 12-month period from September 2020 to August 2021 with a panel of 6,976 dental hygienists across the U.S., Puerto Rico and the Virgin Islands.
“This study of dental hygienists has shown us the profound impact of COVID-19 on clinical practice, as well as the value of disease prevention measures,” said JoAnn Gurenlian, R.D.H., M.S., Ph.D., A.F.A.A.O.M., a lead author of the research and ADHA’s director of education and research. “Workplace safety is of paramount importance to dental hygienists, and it has an effect on employment patterns. This underscores the need to adhere to infection control guidance and proper PPE.”
Infection and Vaccination Rates
Despite initial concerns that dental hygienists were at increased risk of COVID-19, the updated research shows they have a lower COVID-19 cumulative prevalence (8.8%) than the general U.S. population (11.7%). Results also reveal that 75.4% of U.S. dental hygienists have been fully vaccinated against COVID-19, a higher proportion than the general public and healthcare workers outside of dentistry overall at the time.
“We’re pleased to see that dental hygienists have demonstrated continued low incidence of infection and high vaccination, proving the profession’s ability to mitigate risk while providing care in a safe manner,” said Cameron G. Estrich, M.P.H., Ph.D., health research analyst with the ADA Science & Research Institute. “Increased vaccine availability and greater supplies of personal protective equipment (PPE) should further enable dental teams to continue to follow infection prevention measures to reduce the risk of COVID-19 transmission.”
Challenges Persist in Employment
As of August 2021, less than half of dental hygienists that left employment during the pandemic had returned to work. According to the study, 7.9% of respondents that had been employed in March 2020 were not working six months later in September 2020. When the study concluded in August 2021, that number decreased to 4.9%.
However, the pandemic has impacted staffing levels in industries across the country, and the dental profession is not exempt.
While the number of hygienists that left the workforce rebounded from a high of 7.9% in 2020 to 4.9% in 2021, a total of 1.6% of study participants no longer intended to work as dental hygienists, possibly representing a permanent reduction of 3,300 dental hygienists nationwide.
“Not unlike many other professions in the United States, challenges persist in dental hygienist employment. The COVID-19 pandemic has exacerbated a voluntary reduction in the dental hygiene workforce and may persist, as some dental hygienists are choosing to permanently leave the profession,” said Rachel W. Morrissey, M.A., senior research analyst with the ADA Health Policy Institute (HPI).
Despite recovery in dental practices’ patient volume, dentists in the U.S. continue to report recruitment and retention challenges among dental hygienists due to the COVID-19 pandemic, according to HPI data. The study authors note that future research should examine workforce levels after the pandemic resolves, as well as employment perspectives of dental hygienists from a qualitative perspective to yield greater understanding of the influencing factors that impact decisions to return to or engage in employment in clinical practice settings.
Future Opportunities for Risk Mitigation
Given the ongoing COVID-19 pandemic and emergence of new variants, the study authors believe opportunities exist for hygienists to play an important role in public health and safety. However, there is a need for ongoing and increased education and polices to support the continued use of PPE and infection control and prevention procedures, as recommended by the CDC and required by government regulatory agencies.
“This research collaboration with the ADA marks an important moment in oral health,” said ADHA CEO Ann Battrell, M.S.D.H. “Our shared understanding of what dental hygienists are experiencing provides us with essential evidence-based direction for how we can support safe and supportive workplaces, deliver care safely to patients and help define lasting practice improvements that may emerge from this pandemic.”
The ADHA and the ADA will continue to work together to further understand the impact of COVID-19 on the dental team.
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About the American Dental Hygienists' Association
The American Dental Hygienists’ Association (ADHA) is the largest national organization representing the professional interests of the country’s more than 226,000 dental hygienists. Dental hygienists are preventive oral health professionals, licensed in dental hygiene, who provide educational, clinical and therapeutic services that support total health through the promotion of optimal oral health. To learn more about ADHA, dental hygiene or the link between oral health and general health, visit ADHA at
About the American Dental Association
The not-for-profit ADA is the nation's largest dental association, representing 161,000 dentist members. The premier source of oral health information, the ADA has advocated for the public's health and promoted the art and science of dentistry since 1859. The ADA's state-of-the-art research facilities develop and test dental products and materials that have advanced the practice of dentistry and made the patient experience more positive. The ADA Seal of Acceptance long has been a valuable and respected guide to consumer dental care products. The monthly The Journal of the American Dental Association (JADA) is the ADA's flagship publication and the best-read scientific journal in dentistry. For more information about the ADA, visit . For more information on oral health, including prevention, care and treatment of dental disease, visit the ADA's consumer website .
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