Early childhood caries remains one of the most prevalent chronic diseases affecting children worldwide. Traditional restorative approaches often pose challenges in young, anxious, medically compromised, or special-needs pediatric patients. Silver Diamine Fluoride (SDF) has emerged as a minimally invasive, cost-effective, and evidence-based therapeutic agent for arresting dental caries and preventing disease progression. SDF combines the antibacterial properties of silver ions with the remineralization benefits of fluoride, offering a unique approach to caries management. This review examines the composition, mechanism of action, clinical applications, effectiveness, advantages, limitations, and future perspectives of SDF in pediatric dentistry. Current evidence demonstrates high caries-arrest rates, reduced treatment burden, and improved accessibility to preventive care. Despite concerns regarding black staining of treated lesions, SDF remains a valuable tool in contemporary minimally invasive dentistry. The study concludes that Silver Diamine Fluoride is transforming pediatric caries management and is likely to play an increasingly important role in preventive and community-based oral healthcare.