# Phosphate-treated siwak as a calcium phosphate–bearing bioactive material for fluoride-free oral care: physicochemical characterization and in vitro enamel microhardness recovery

Source: [Medical research : nature.com subject feeds](https://www.nature.com/articles/s41598-026-80345-z) · 2026-11-10 · Medicine
Page: https://themorning.science/story/phosphate-treated-siwak-as-a-calcium-phosphate-bearing-bioactive-material-for-fl-8aab34b01971ae57
Kind: research · Impact: low

## In brief

- The study describes phosphate-treated siwak as a calcium phosphate-bearing bioactive material for oral care.
- It reports physicochemical characterization of the material.
- It reports in vitro enamel microhardness recovery and is positioned as a fluoride-free option.

## Why it matters

It offers a possible fluoride-free approach to enamel remineralization based on a natural material, though the evidence shown so far is in vitro.

## Timeline

- 2026-11-10: Study listed in Nature subject feed

## Coverage

- [Phosphate-treated siwak as a calcium phosphate–bearing bioactive material for fluoride-free oral care: physicochemical characterization and in vitro enamel microhardness recovery](https://www.nature.com/articles/s41598-026-80345-z) — Medical research : nature.com subject feeds, 2026-11-10

Tags: dentistry, oral care, bioactive materials, enamel, fluoride-free

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science