Nine brands sell hydroxyapatite gum. Here is what each one actually publishes.
We reviewed the public product listings, FAQs and policy pages of all nine brands selling hydroxyapatite chewing gum to US buyers, and recorded what each one discloses: the dose per piece, ingredient amounts, particle data, lab documents, study citations and guarantee terms. Every cell in the dataset links to its source.
Six findings
publish a per-piece hydroxyapatite dose. Minvelle states 5.7 mg of nano-HAp per piece; Crait states 70 mg of non-nano HAp. The two figures are not directly comparable: particle form differs, and milligrams alone say nothing about surface area. The other seven say "contains hydroxyapatite" with no quantity anywhere.
publishes ingredient amounts. Every brand lists its ingredients; only one attaches weights to them. "Proprietary" is doing a lot of work in this category.
offers downloadable lab documents (a safety data sheet and a per-batch certificate of analysis). One more brand shows heavy-metal figures as an on-page image, but the report behind it could not be retrieved.
state a numeric particle size (200 nm, 20 nm, and ≤100 nm). The rest say "nano" or "micro" with no number, which makes the claim untestable.
link the studies they lean on (one links 14, one lists 39 numbered citations). Meanwhile, specific percentage claims like "83% / 91% / 87%" appear on brand sites with no source attached at all.
put a money-back guarantee in writing. One brand advertises "30 days" on its product page while its own refund policy states 14 days, unopened. Three have no written guarantee we could find.
The full table
Condensed from the interactive database, where every cell carries its source link and check date.
| Brand | HAp per piece | Particle data | Ingredient amounts | Lab documents | Studies cited | Guarantee |
|---|---|---|---|---|---|---|
| Minvelle | 5.7 mg nano (0.30% of 1.9 g) | Nano, 200 nm (supplier-stated) | Yes, all 14 with weights | MSDS + batch CoA (manufacturer redacted, disclosed) | Partial: pH study sourced | 30 days |
| Crait | 70 mg non-nano (gum) | Non-nano, described as surface-acting | No amounts | None | "Studies show", uncited | Not disclosed |
| Enamio | Not disclosed | Nano, 20 nm rod-shaped (stated) | No amounts | "3rd-party tested" badge, no report | 14 studies linked; FAQ percentages uncited | 30 days, first order |
| Underbrush | Not disclosed | Nano, size not stated | No amounts | None | 39 numbered citations | Not disclosed |
| Dentagum | Not disclosed | Nano, size not stated | No amounts | Heavy-metal figures as image; report not retrievable | "83% / 91% / 87%" with no sources | 30 days advertised; policy says 14 days unopened |
| CaviChew | Not disclosed | Nano, ≤100 nm rod-shaped (stated) | No amounts | None | Refers to studies on other gums | Not found |
| VanMan | Not disclosed | Bovine-bone HAp, form not stated | No amounts | None | None | Yes, no time window stated |
| Weldental | Not disclosed | "Micro", no number | No amounts | None | None | Site: 30 days unused; Amazon non-returnable |
| RevitaBite | Not disclosed | Nano, size not stated | No amounts | None | None | 30 days |
Methodology
Between June and July 2026 we reviewed the public product pages, FAQ pages, policy pages and downloadable documents of all nine brands selling hydroxyapatite chewing gum to US buyers. "Not disclosed" means the information was not findable in the brand's own public materials on the check date recorded in the database, not that it does not exist somewhere. Third-party marketplace claims were only used where a brand sells exclusively through that marketplace.
Two limits worth naming: this measures what brands publish, not what their products contain; and the publisher of this report competes in the category (see the disclosure box above). Both are reasons the dataset is fully source-linked and downloadable, so any row can be re-verified in minutes.
What to demand from any brand in this category
Last reviewed: July 28, 2026 · Data snapshot: July 11, 2026 · Corrections: max@minvelle.com