What happened?
A clinical trial reported that applying silver diamine fluoride could stop existing cavities in young children from getting worse. NIH featured the findings in its August research update.
Why does it matter?
A treatment that arrests decay may offer another option for managing affected teeth. Its role depends on the individual tooth and the child’s wider dental needs.
How to interpret the evidence
The key outcome is control of existing decay. Families should ask their dentist how the evidence relates to the proposed treatment and follow-up plan.
What remains uncertain?
Stopping progression does not mean damaged tooth structure has regrown or that every child can avoid other dental treatment. Ongoing dental assessment remains necessary.
Medical News provides general health education. Individual treatment decisions depend on your circumstances and the advice of your clinical team.

