Sunstar GUM · Dental Floss
Sunstar Gum Easythread Floss Patient Sample Packs, Count Box of 100 | 3200PQ | Safco Dental Supply
Lower PFAS concern; standard nylon floss with no known Teflon-family coating treatment.
Sunstar GUM Easythread is conventional nylon dental floss with no public evidence of PFAS-laden coatings or water-resistant treatments. The brand makes no PFAS claims. Standard nylon filament carries lower risk than coated or stain-treated products, though formal lab testing is absent from public records.
Shop Sunstar GUM on Amazon →Material
Nylon filament floss
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cosmetics is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Sunstar GUM Easythread is a nylon monofilament or multifilament floss, the most common floss material globally. Nylon fibers are thermoplastic polymers that do not leach plasticizers like BPA or phthalates under normal oral use, since floss is not heated and contact time with saliva is brief. The filament is typically waxed (often with paraffin or synthetic wax) to aid sliding between teeth; this wax coating is food-contact approved and poses no documented ingestion hazard in typical amounts.
The brand's record and disclosure
Sunstar is a major Japanese oral-care manufacturer with a long history; GUM is its flagship floss brand distributed globally. The company has not issued public disclosures about PFAS in floss, nor are there established recalls or safety controversies specific to Sunstar GUM floss in public databases. The brand is mainstream and meets standard FDA and EU regulatory expectations for dental devices, though specific third-party certifications (organic, non-GMO) are not marketed for this product.
How it compares in its category
Nylon floss is the industry standard and carries the same material-safety profile as competitors like Oral-B, Listerine, or store-brand options. Waxed nylon floss is chemically simpler than some specialty alternatives (tape, charcoal-infused, or silk floss variants), which may carry dye or additive uncertainties. This product is a basic, reliable formulation with no unusual additives known to set it apart from or behind peer products.
If you buy it
Use standard length (12-18 inches) and discard after one use; reusing floss risks bacterial growth and plaque transfer. Store in a dry place; exposure to heat or humidity does not compromise nylon safety but may degrade the wax coating cosmetically. Replace the box when filament becomes frayed or wax coating visibly deteriorates. No special handling required; standard flossing technique (gentle, not forced between teeth) minimizes gum trauma.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Phthalates in floss coating or wax
Nylon floss and paraffin-based wax do not require phthalate plasticizers; no established reports of phthalates in Sunstar GUM or peer nylon floss products.
BPA or bisphenol compounds in nylon polymer
Nylon is synthesized without BPA as a monomer; BPA does not migrate from nylon under oral conditions (room temperature, saliva contact). No documented concern in this product class.
Dye toxicity (azo dyes, heavy metals in pigments)
GUM Easythread is typically white or clear; if colored, standard dental floss dyes are regulated as cosmetic or device colorants and do not contain banned azo compounds. No heavy metal pigment contamination is reported for this brand.
Bacterial contamination or microbial growth during storage
Nylon itself does not support microbial growth, but if the box is stored in high-humidity environments, cardboard packaging may degrade or harbor mold spores externally. This is a storage risk, not an inherent product defect.
Choking or intestinal obstruction if swallowed
Floss is not intended for ingestion; accidental swallowing is rare but can cause minor oral irritation or, in rare cases, GI blockage. This is a use-error risk, not a chemical hazard.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Dental Floss
Cocofloss
Refill Trio
Coconut fiber, based floss with plant-based coating
Lower-concern dental product; natural materials and transparent PFAS stance, but no independent verification.
⚠Risky category by default
Dental Lace
Refillable Silk Dental Floss
Silk floss with compostable refillable packaging
Lower concern; silk floss with credible PFAS-free positioning and third-party certification.
✓Verified PFAS-free by a third party
Dental Lace
Plant Based/Vegan Floss Refillable Glass Container PFAS-Free (2 Spools/4-
Plant-based vegan floss (likely plant cellulose or silk fibers)
Lower-concern product with explicit PFAS-free claim; no third-party verification limits certainty.
⚠Risky category by default
More dental floss grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.