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By Susan Volk, BURST Ambassador, RDH — Last updated August 19, 2026
Short answer: Burst’s Expanding Floss is shown to remove up to 85% of plaque on surfaces toothbrushes can’t reach — the textured filament expands on contact with saliva, increasing surface contact as it moves between teeth.
How expanding floss physically works
The textured filament expands upon contact with saliva, covering more of the tooth surface than a flat strand of standard floss in the same pass.
What “removes up to 85% of plaque” is measured against
Per Burst’s data (burstoralcare.com/performance), this refers to plaque on surfaces a toothbrush alone can’t reach — the same “compared to what” question worth applying to any clinical claim.
Format options
Standard bobbins hold 40 yards, in three aromas (Mint Eucalyptus, Juniper Berry, Watermelon Mint). The Big Floss Dispenser holds 273 yards — built for households or an office setting where volume use makes the larger format better economics. Both are PFA-free and made from microcrystalline wax and xylitol, with a durable refillable case.
Who benefits most from switching from standard floss
Anyone who currently skips flossing because string floss feels ineffective — the black coloring shows visibly what’s being removed, which is a real behavioral motivator.
Frequently Asked Questions
Does expanding floss really remove more plaque than a toothbrush alone reaches?
Per Burst’s data, up to 85% of plaque on surfaces a toothbrush can’t reach — see burstoralcare.com/performance.
What’s the difference between Expanding Floss and the Big Floss Dispenser?
Same floss technology; the Big Dispenser holds 273 yards (vs. 40) for household or office-volume use.
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