What is fluoride varnish?

Fluoride varnish is a liquid containing fluoride, a naturally occurring mineral. Fluoride varnish is applied to the surfaces of teeth with a small brush to make them more resistant to cavities. It can be applied by a dental hygienist, dentist, nurse, physician, or other health professional.

Fluoride varnish is recommended for children and adults who are at risk for getting cavities. Cavities can lead to problems with eating, talking, smiling, and doing daily activities. If a cavity is left untreated, an infection called an abscess may form. This infection can spread to other parts of the body and cause serious health problems.

Is fluoride varnish safe?

Fluoride varnish is safe for children and adults, including pregnant women and older adults. Fluoride varnish may temporarily make teeth look yellow. This is normal, and the teeth will go back to their usual appearance after they are brushed with toothpaste.

After fluoride varnish is applied, are there things to avoid?

After fluoride varnish is applied, avoid eating, drinking, or brushing or flossing your teeth for at least 4– 6 hours.

How long does fluoride varnish last, and how often should it be applied?

Fluoride varnish helps protect teeth from developing cavities for several months. It works best if adults receive a fluoride varnish application every 3 to 6 months.

Is fluoride varnish covered by dental insurance?

Some dental insurance plans cover fluoride varnish application for adults. Ask your dental office or dental insurer to learn more.

Cite as

Holt K, Barzel R. 2023. Fluoride Varnish for Adults: Q&A. Washington, DC: National Maternal and Child Oral Health Resource Center.

Fluoride Varnish for Adults: Q&A � 2023 by National Maternal and Child Oral Health Resource Center, Georgetown University

This publication was supported by the Health Resources and Services Administration (HRSA) of the U.S. Department of Health and Human Services (HHS) as part of an annual award totaling $1,321,950 with no funding from nongovernmental sources. The contents are those of the author(s) and do not necessarily represent the official views of, or endorsement by, HRSA, HHS, or the U.S. government. For more information, please visit www.HRSA.gov.

Permission is given to save and print this publication and to forward it, in its entirety, to others. Requests for permission to use all or part of the

information contained in this publication in other ways should be sent to the e-mail address below.

National Maternal and Child Oral Health Resource Center

Georgetown University

E-mail: OHRCinfo@georgetown.edu