Eggshells vs. fluoride: can a kitchen scrap beat standard cavity care?
NCT ID NCT07711132
First seen Jul 17, 2026 · Last updated Jul 17, 2026
Summary
This trial tests whether a varnish made from nano-sized eggshell can help reverse the earliest stage of tooth decay (enamel caries) in adolescents aged 15-20. It compares the eggshell varnish against two established treatments: a CPP-ACP paste (GC Tooth Mousse) and a standard 5% sodium fluoride varnish. Over 12 months, the study measures changes in tooth remineralization using a laser device and clinical criteria to see which approach works best.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- nano-eggshell varnish, CPP-ACP paste, and sodium fluoride varnish
- What this could lead to
- If effective, nano-eggshell varnish could offer a natural, low-cost alternative to fluoride for reversing early tooth decay in teens.
- What could go wrong
- This is a small, early-stage trial with 90 participants, so results may not apply broadly. Nano-eggshell is experimental and may not outperform standard treatments.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Faculty of Dentistry, Mansoura University
RECRUITINGAl Mansurah, Egypt