PFAS-Coated Dental Floss

Slick PTFE/PFAS-coated 'glide' floss.

58Moderate burden · out of 100
Cleaner swapUncoated or natural-wax floss

How this score is built

  1. 100Start
  2. 86.2Chemical hazard 3 × 4.6−13.8
  3. 76Everyday exposure 3 × 3.4−10.2
  4. 58Persistence 7 × 2.6−18.2, then rounded to 58
  5. ModerateThe band58 sits in 40–59.

What each input rests on

The three ratings behind the score, and the studies each rests on
InputRatingEvidence
Chemical hazard3/10unsourced input
Everyday exposure3/10
Persistence7/10unsourced input

Ratings are editorial. A study listed here supports the rating; it did not compute it. How the index is built

What this means for you

Some smooth 'glide' flosses are PTFE-based, and research has associated their use with higher PFAS levels. Plain waxed floss works just as well.

Evidence strength: moderate

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Lower-exposure choices