Smart Floss - 30 yd

DrTung's built its name on a simple but stubborn idea: oral care should work in harmony with the mouth's own microbiome, not fight against it — and that idea should hold up under a dental clinician's microscope, not just an ad copywriter's pen. Smart Floss dental tape is where that philosophy shows up in the floss aisle.

This 30-yard spool uses DrTung's patented Smart Floss fiber, coated in a natural plant-and-beeswax blend that expands once it enters the interdental space, rather than staying flat like conventional floss. That expansion is what drives the clinically measured up to 55% increase in plaque removal versus standard floss, and it's also what makes the strand noticeably gentler around inflamed or sensitive gum lines and easier to navigate around braces, bridges, and wider gaps between teeth.

To use it, wrap a length around your fingers as you would any floss, guide it gently between teeth, and let the fiber do the expanding rather than forcing it — you'll feel the difference in coverage on the first pass. Because the coating is plant-and-beeswax rather than a synthetic slip agent, this floss is not vegan, though it remains cruelty-free with no animal testing anywhere in DrTung's process, and it fits comfortably into keto, paleo, or any other diet-focused oral care routine since it's a topical dental tool rather than something ingested.

Smart Floss is PFAS-free (no forever-chemical coatings), free of parabens and artificial flavors or sweeteners, and packaged in FSC-certified paperboard. Store at room temperature away from direct heat; no refrigeration required.

Ingredients: Flavored with natural cardamom essential oil and lightly coated with a vegetable and beeswax blend. Contains beeswax plus one or more of candelilla, carnauba, castor oil, and rice bran wax. Contains no genetically modified ingredients, known allergens, phthalates, soy, or silica, and is dairy-free and gluten-free. Formulated without PFOA, PFAS, PFOS, PTFE, APFO, SLS, fluorinated surfactants, palm oil, fluoride, artificial preservatives, artificial flavors, artificial sweeteners, sulfates, dyes, parabens, and petroleum-derived wax.

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Common Questions

How does Smart Floss actually compare to a standard nylon or PTFE floss?
Standard floss, especially PTFE (Teflon-style) tape, stays flat and glides through the contact point without changing shape, which means it often skips the wider part of the interdental space just below the gumline. Smart Floss is coated in a plant-and-beeswax blend that swells once it passes through the tight contact point, so it fills more of that triangular gap between teeth. In clinical testing, that expansion translated to up to 55% more plaque removal compared to conventional unwaxed or PTFE floss. The tradeoff is that it takes a bit more care threading it through very tight contacts on the first few uses until you get a feel for the expansion.'

What's the actual mechanism behind the plaque removal claim — is this just marketing language?
No, it's a physical mechanism tied to the fiber's coating, not a chemical or antimicrobial additive. The plant-and-beeswax coating absorbs moisture and expands laterally as it moves through the interdental space, increasing the surface area of floss in contact with the tooth and gumline compared to a flat strand. More contact area means more mechanical disruption of the biofilm (plaque) sitting in that space, which is where most gingival inflammation starts. This was measured in a clinical trial comparing plaque scores before and after flossing with Smart Floss versus standard floss, not just a lab bench test.

Is this floss compatible with a low-toxin or clean-living lifestyle, and is it vegan?
It fits well with a clean-ingredient approach: it's PFAS-free, meaning it has no forever-chemical coatings like the fluoropolymers used in PTFE tape flosses, and it contains no parabens or artificial flavors or sweeteners. It is not vegan, since the coating uses beeswax rather than a synthetic slip agent, but the brand is cruelty-free with no animal testing anywhere in production. If avoiding synthetic PFAS coatings is the priority rather than avoiding all animal-derived ingredients, this floss checks that box.

Can this floss work as a substitute if I have braces, bridges, or wider gaps between my teeth?
Yes, this is one of the more common reasons people switch to Smart Floss. Because the fiber expands rather than staying flat, it fills gaps around orthodontic wires, bridge work, and wider natural spacing better than a thin, flat strand that can slide through those areas without touching the tooth surface. For braces specifically, you still guide it around the wire and under the archwire by hand rather than threading straight across, and the expanding action does more cleaning once it's positioned there. It's also noticeably gentler on inflamed or receding gum tissue than stiff waxed floss, since the coating softens the initial pass.

How can I verify the clinical and certification claims on this product?
The plaque-removal claim comes from a clinical trial, not an internal lab test, and DrTung's states it is dentist-approved, meaning the product has been evaluated by dental professionals rather than only marketed to them. FSC certification on the paperboard packaging is a third-party chain-of-custody standard, meaning the wood pulp used can be traced back to responsibly managed forests. PFAS-free and cruelty-free are both testable claims: PFAS-free means no fluorinated compounds were used in the coating process, and cruelty-free here specifically means no animal testing was conducted at any stage of product development.

What makes 'biocompatible with the mouth's microbiome' different from what other floss does?
Most floss is engineered purely for mechanical debris removal and doesn't factor in what happens to the bacterial ecosystem in your mouth afterward. DrTung's approach is built around the idea that oral bacteria aren't inherently the enemy — an imbalanced microbiome is the problem, not bacteria's mere presence — so their products are designed to disrupt plaque biofilm without harsh antimicrobial coatings that indiscriminately wipe out the mouth's bacterial population. The plant-and-beeswax coating on Smart Floss is inert rather than antibacterial, so it removes plaque mechanically through the expansion action rather than chemically altering the oral flora. This is consistent with current dental research suggesting that a balanced oral microbiome, not a sterilized one, is associated with lower rates of gum disease and cavities.