A new "silver-bullet" to treat caries in children--nano silver fluoride: a randomised clinical trial.

Background: Untreated dental caries in children remains a public health challenge in poor communities.

Objectives: This prospective controlled clinical trial investigated the effectiveness of a new anti-caries agent, Nano Silver Fluoride (NSF), applied once a year to arrest caries in children.

Methods: One hundred thirty decayed primary teeth were randomly divided into two groups: NSF as the experimental agent and water as the control group.