--- title: "Tooth powder vs. toothpaste: what clay leaves out" description: "Tooth powder and bentonite clay against the FDA's rules for anticavity toothpaste and powder: a fluoride active ingredient and lab tests. 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 question 1. [Home](https://oralbench.com/) 2. [Guides](https://oralbench.com/guides) 3. Tooth powder vs. toothpaste: the fluoride question Clay tooth powders sell themselves as the natural swap for toothpaste. Before you swap, it helps to know what the FDA expects from a product sold to fight cavities, powders included. By **[OralBench editorial team](https://oralbench.com/about)** Updated September 27, 2026 ![A woman dipping a bamboo toothbrush into a small dish of tooth powder](https://oralbench.com/img/guia-tooth-powder-768.webp?v=ab148ad09d) Short answer A tooth powder is a dry mix you put on a wet brush instead of toothpaste. The FDA's monograph for over-the-counter anticavity products covers powders as well as pastes, and the active ingredients it lists are three fluoride compounds: sodium fluoride, sodium monofluorophosphate and stannous fluoride. FortBite, the clay powder on this site, says it will "Protect against cavities" and lists none of them. 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 - Says "Protect against cavities" without a fluoride active ingredient - 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. [See FortBite on the seller's site](https://go.oralbench.com/c/tooth-powder--fortbite) [Read our FortBite review](https://oralbench.com/fortbite) ## FortBite against the FDA rules for anticavity products What the FDA monograph sets Anticavity toothpaste or powder FortBite Cavity claim Use on the label: aids in the prevention of dental cavities Its page says "Protect against cavities" Active ingredient Sodium fluoride, sodium monofluorophosphate or stannous fluoride None of the three on the ingredient list Testing An animal cavity test plus an enamel solubility or fluoride uptake test No test of the product on its page How you use it Powder: cover the bristles of a wet brush, brush at least 30 seconds, reapply and brush again; at least twice a day A little powder on the brush, twice a day FDA column: OTC Monograph M021, "Anticaries Drug Products for Over-the-Counter Human Use" (posted May 2, 2023), read on September 27, 2026. FortBite column: its official page, read on September 25, 2026. ## Why fluoride is the part to think about The NIH's dental institute (NIDCR) says fluoride "has been shown to prevent cavities, or tooth decay," and that it "is also used in oral care products such as toothpaste and mouth rinse." The FDA's anticavity monograph lists only fluoride compounds as active ingredients. A clay powder without fluoride can still clean and freshen. What it doesn't give you is the ingredient these agencies rely on against cavities, so swapping it in for your fluoride toothpaste is a real trade, not a like-for-like switch. ## A fluoride tooth powder does exist Powder as a format isn't the issue. The FDA monograph defines a dentifrice as "An abrasive-containing dosage form (gel, paste, or powder) for delivering an anticaries drug to the teeth," and it sets out a powdered sodium fluoride version with its own directions: "Apply powder to a wet toothbrush; completely cover all bristles." So the question to ask about any tooth powder isn't paste versus powder. It's whether one of those three fluoride compounds is on the label. On FortBite's, none is. ## 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, and no fluoride. ### 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?** The format isn't what counts. The FDA's anticavity monograph covers powders and pastes alike, and in both the active ingredient is a fluoride compound. A clay powder with no fluoride on the label doesn't have that ingredient, whatever its form. **Is bentonite clay good for your teeth?** Clay isn't among the active ingredients in the FDA's anticavity monograph, 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. **Is there a remineralizing tooth powder?** A powder can carry fluoride: the FDA monograph includes a sodium fluoride powder. That matters because the NIDCR credits enamel repair to the calcium and phosphate in your saliva "plus fluoride from toothpaste, water, and other sources." FortBite says its calcium carbonate "Supports healthy enamel," but it lists none of the three fluoride compounds and its page shows no enamel measurement. Our remineralization guide lines up every product on this site that pitches enamel support. ## Sources Public pages from U.S. government health agencies that this page relies on. They open in a new tab. 1. [OTC Monograph M021: Anticaries Drug Products for Over-the-Counter Human Use](https://www.accessdata.fda.gov/drugsatfda_docs/omuf/monographs/OTC%20Monograph%20M021-Anticaries%20Drug%20Products%20for%20OTC%20Human%20Use%2005.02.2023.pdf), U.S. Food and Drug Administration (FDA) 2. [Fluoride & Dental Health](https://www.nidcr.nih.gov/health-info/fluoride), National Institute of Dental and Craniofacial Research (NIH) 3. [The Tooth Decay Process](https://www.nidcr.nih.gov/health-info/tooth-decay/more-info/tooth-decay-process), National Institute of Dental and Craniofacial Research (NIH) ## Related pages Reviews ### [FortBite review: clay tooth powder, big claims, weak sources](https://oralbench.com/fortbite) FortBite is a clay tooth powder you brush with instead of toothpaste, and we'd ask a dentist before giving up fluoride for it. Guides ### [Can a supplement remineralize your teeth? What the labels show](https://oralbench.com/remineralize-teeth) Remineralization is enamel taking back the minerals that acids pull out of it. Guides ### [Xylitol for teeth: nine products, zero amounts](https://oralbench.com/xylitol-for-teeth) Xylitol is a sugar alcohol used as a sweetener. Updated September 27, 2026. 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