Most people don't think much about the type of floss they buy — they grab whatever is on sale or slides easiest between their teeth. But there are real differences worth knowing, especially when it comes to one popular option that has raised some health concerns in recent years.
What Is Teflon Floss?
Many popular flosses — including several "glide" style products — are made from PTFE, the same synthetic material used to make Teflon cookware. It's smooth, shred-resistant, and slips easily through tight spaces, which is why it became so popular. But PTFE belongs to a class of chemicals known as PFAS — often called "forever chemicals" because they don't break down in the body or the environment. Research has found that people who regularly use PTFE floss tend to have higher PFAS levels in their bloodstream. While the science is still developing, it's a concern worth taking seriously, especially for children.
Why We Recommend Waxed Floss
Traditional waxed nylon floss does everything PTFE floss does — slides between teeth, removes plaque and food debris, protects gum health — without the chemical concerns. The wax coating helps it glide smoothly, making it comfortable for adults and kids alike. It's widely available, affordable, and time-tested.
Floss First, Then Brush
One tip that surprises many patients: floss before you brush, not after. Flossing first loosens plaque and food particles between teeth, and brushing afterward sweeps everything away and lets fluoride toothpaste reach those freshly cleaned spaces. It's a small change that makes your whole routine more effective.
The Bottom Line
The best floss is the one your family will actually use consistently. But given what we know about PTFE and PFAS, waxed nylon floss is the straightforward, safe choice for everyone in the household. If you have questions about your family's home care routine, we're always happy to help at your next visit.