This document discusses early childhood caries (ECC), providing definitions, statistics, risk factors, prevention strategies, and recommendations. ECC is a biofilm-induced acid demineralization of enamel or dentin in young children, typically under age 3. It affects 40% of US children by kindergarten. Risk is highest in low-income children and those whose mothers have untreated dental disease. Prevention strategies include daily oral hygiene, limiting sugary drinks and snacks, dental visits by age 1, and educating caregivers. A personalized prevention plan tailored to a child's risk factors can help reduce ECC.