The question popped up earlier this year in a Reddit discussion on dental hygiene: Anyone notice that Oral-B floss suddenly seemed different?

“It feels more plastic-like, rougher, less smooth,” the Reddit user noted. Wrote another: “It feels like I’m going to take a tooth along with it when I pull it out.”

Some dental floss manufacturers have indeed been quietly moving away from the synthetic material PTFE, which helped their product slip smoothly between teeth. Their decisions follow studies raising concerns as well as consumer worries and state regulation of consumer products containing PFAS, also known as “forever chemicals.”

https://www.msn.com/en-us/science/chemistry/dental-floss-is-shedding-potentially-harmful-chemicals/ar-AA2et6fD