--- title: "Tooth powder vs. toothpaste: what clay leaves out" description: "Tooth powder and bentonite clay against the bar the ADA sets for toothpaste: fluoride for cavity protection and a limit on abrasiveness. FortBite, checked." canonical: https://oralbench.com/tooth-powder alternate_html: https://oralbench.com/tooth-powder language: en-US last_updated: 2026-09-27 type: guia --- # Tooth powder vs. toothpaste: the fluoride and abrasiveness question 1. [Home](https://oralbench.com/) 2. [Guides](https://oralbench.com/guides) 3. Tooth powder vs. toothpaste: the fluoride and abrasiveness question Clay tooth powders sell themselves as the natural swap for toothpaste. Before you swap, it helps to know the two things the American Dental Association checks in anything you brush with. By **OralBench editorial team**Updated September 27, 2026 ![Tooth powder vs. toothpaste: the fluoride and abrasiveness question](https://oralbench.com/img/guia-tooth-powder-640.webp) Short answer A tooth powder is a dry mix you put on a wet brush instead of toothpaste. The ADA doesn't cover powders or clay on its toothpaste page, but it sets two bars for toothpaste: to carry its Seal with a cavity-protection claim, it "must contain fluoride", and it must have a relative dentin abrasivity (RDA) of 250 or less. FortBite, the clay powder on this site, lists no fluoride and gives no abrasiveness number. If you try a powder, talk to your dentist first, especially if you get cavities. Heads up: this page has affiliate links. If you buy through one, we may earn a commission, at no extra cost to you. It doesn't change what we write or how we rank. [How we choose and how we earn](https://oralbench.com/affiliate-disclosure) ## Products on this site that contain it - ### FortBite **Best for:** people curious about a clay powder who still see their dentist regularly #### Pros - Named ingredients: bentonite and kaolin clay, calcium carbonate, herbs - Free US shipping - Refund accepts returned empty jars, according to the page #### Cons - No fluoride on the ingredient list - No abrasiveness (RDA) number - No amounts and no jar size **Verdict**Fine as a curiosity next to regular dental care. Not a like-for-like swap for a fluoride toothpaste. [Check price on the official site](https://go.oralbench.com/c/tooth-powder--fortbite) ## FortBite against the ADA bar for toothpaste What the ADA checks Toothpaste with the ADA Seal FortBite Fluoride Required for a cavity-protection claim None on the ingredient list Abrasiveness (RDA) 250 or less Not stated Proof Must meet the ADA's safety and efficacy requirements No test of the product on its page How you use it Brush twice a day A little powder on the brush, twice a day ADA column: the ADA "Toothpastes" page, updated February 11, 2026. FortBite column: its official page, read on September 25, 2026. ## Why fluoride is the part to think about The ADA puts it simply: "Fluoride strengthens teeth to help prevent tooth decay and remineralizes tooth enamel in the early stages of tooth decay." That's why any toothpaste carrying the ADA Seal with a cavity claim must contain it. A clay powder without fluoride can still clean and freshen. What it doesn't give you is the ingredient the ADA relies on against cavities, so swapping it in for your fluoride toothpaste is a real trade, not a like-for-like switch. ## Why abrasiveness matters Anything you brush with wears the tooth a little. The ADA's line: dentifrices "at or below 2.5 times the reference value, or 250 RDA, are considered safe and effective", and brushing properly at that level "produces limited wear to dentin and virtually no wear to enamel." Clay and calcium carbonate powders can land anywhere on that scale, and FortBite's page gives no number. If you have receding gums, exposed roots or sensitive teeth, that missing number is the one to ask your dentist about. ## Bentonite clay for teeth, in short ### What it is A natural clay, used in FortBite alongside kaolin clay and calcium carbonate. The page says it "pulls toxins out of surfaces." ### What's missing No measurement on the page of anything being pulled out of teeth, no fluoride, no abrasiveness number. ### What to do If you like the idea, use it next to your dentist's advice, not instead of fluoride. ## Frequently asked questions **Is tooth powder better than toothpaste?** Not by the ADA's measure. Its Seal asks for fluoride in a cavity-protection toothpaste and an RDA of 250 or less. A clay powder with no fluoride and no RDA number can't show either. **Is bentonite clay good for your teeth?** The ADA's toothpaste page doesn't cover clay, and FortBite's page shows no measurement for it. We can't point to evidence either way. **Does FortBite have fluoride?** No fluoride appears on the ingredient list its page shows. **Can I use tooth powder and toothpaste together?** Plenty of people alternate. If you do, keep a fluoride toothpaste in the routine and ask your dentist, especially if you're prone to cavities or sensitivity. ## Related pages Reviews ### [FortBite review: clay tooth powder, big claims, weak sources](https://oralbench.com/fortbite) FortBite is a tooth powder. You dab a little on your toothbrush and brush twice a day, in place of toothpaste. Read more Guides ### [Can a supplement remineralize your teeth? What the labels show](https://oralbench.com/remineralize-teeth) Remineralization is how teeth rebuild minerals that acids strip away, and the ADA credits fluoride for it: fluoride "helps fight cavities by repairing the damage these… Read more Guides ### [Xylitol for teeth: five labels, zero amounts](https://oralbench.com/xylitol-for-teeth) Xylitol is a sugar alcohol used as a sweetener. Read more Updated September 27, 2026. 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