Background: Early Childhood Caries (ECC) is suspected of tooth decay that occurs in deciduous teeth. ECC is a significant problem in developing countries, which is exacerbated by low social status and malnutrition. Factors that can affect caries transfer in deciduous teeth are milk consumption at night and prolonged breastfeeding. Objective: This study aimed to support the long association of breastfeeding with severity of caries in children aged 1-2 years in the work area of Andalas Health Center, Padang City. Method: This study was an observational study with a cross sectional design. The number of research respondents is 45 children aged 1-2 years who are at the Posyandu in the Andalas Community Health Center working area. All tooth surfaces were evaluated and the scores of each tooth were calculated using a caries severity index. The average score in this study was 1.22 and grouped into three categories. A score of 0 for non-caries, a score of 0 
                        
                        
                        
                        
                            
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