Untreated dental caries in young children is a significant health challenge that affects the quality of life of both children and their parents. There has been a paradigm shift from surgical to medical management of dental caries, with Silver Diamine Fluoride (SDF) being a topical medicament used for treating and preventing dental caries. SDF is a colorless ammonia solution containing silver and fluoride ions, dissolved in water containing ammonia. It contains approximately 25% (w/v) silver as an antimicrobial agent, 8% ammonia as the solvent, and 5% sodium fluoride as a remineralization agent. SDF can cause permanent dark discoloration of teeth, temporary discoloration of skin and mucosa, and pulpal irritation in deep caries. Due to these issues, SDF has had poor acceptance among patients, parents, and even clinicians. However, discoloration caused by SDF can be removed with a potassium iodide solution. This paper describes the medical management of carious lesions in preschool children with 38% SDF. Key words: dental caries, preschool children, SDF.