PFAS in Dental Floss: Unraveling the “Forever Chemical” Risk

Discover how PFAS 'forever chemicals' are used in some gliding dental flosses and the serious health risks associated with these persistent compounds, including cancer and immune disruption. Learn how to choose safer, PFAS-free alternatives.

The Slide to Smoothness: How PFAS Make Floss Glide

PFAS, or per- and polyfluoroalkyl substances, are a family of over 12,000 synthetic chemicals renowned for their exceptional resistance to water, oil, and stains. These properties make them incredibly useful in a wide range of industrial and consumer products, including non-stick cookware, water-repellent clothing, and even some personal care items. In the context of dental floss, PFAS are sometimes used to create a slick, low-friction surface that allows the floss to glide easily between teeth.

Specifically, polytetrafluoroethylene (PTFE), a type of PFAS known commercially as Teflon, is a material sometimes incorporated into 'gliding' or 'shred-resistant' dental floss. The concern arises because, during regular flossing, microscopic particles of these PFAS-coated threads can potentially detach and be ingested or absorbed through the gums, introducing these persistent chemicals directly into the body.

Oral Health, Overall Health: The PFAS Connection

The scientific community has established strong links between PFAS exposure and a growing list of serious health problems. These 'forever chemicals' do not break down in the environment or the human body, leading to their accumulation over time, known as bioaccumulation. Even low levels of exposure can contribute to this body burden, with potentially significant consequences.

A 2019 study published in the Journal of Exposure Science & Environmental Epidemiology specifically found elevated levels of certain PFAS in women who used a particular brand of dental floss that contained the chemicals. This reinforces the idea that dental floss can be a direct source of PFAS exposure, adding to the cumulative burden from other sources like contaminated water, food packaging, and non-stick cookware.

Floss Safely: PFAS-Free Alternatives

Given the significant health concerns associated with PFAS, choosing PFAS-free dental floss is a straightforward and impactful way to reduce your daily exposure to these persistent chemicals. Fortunately, many excellent alternatives are available on the market.

When shopping for floss, look for products specifically labeled 'PFAS-free,' 'PTFE-free,' or 'Teflon-free.' Common PFAS-free options include floss made from natural silk, nylon, or polyester that is unwaxed or coated with natural waxes (like beeswax or candelilla wax) rather than synthetic fluoropolymers. Biodegradable and compostable silk flosses are also excellent choices for both health and environmental reasons. Consider brands that prioritize transparency in their ingredients and commit to avoiding 'forever chemicals' in their manufacturing processes. Your oral hygiene routine doesn't need to come with a chemical cost.

Better Alternatives