Introduction: Exclusive breastfeeding has multiple short-and long-term benefits. Poor oral hygiene, poor nutrition and poor eating habits are risk factors for early childhood caries (ECC). Objective: To analyze the literature on the systemic and oral benefits of breastfeeding (BF), as well as the effects of prolonged and nightly breastfeeding. Methodology: A literature review was carried out in PubMed and Google Scholar databases using the keywords: early childhood caries, breastfeeding, breastmilk, bottle feeding, prolonged breastfeeding, diet, sugar, pediatric dentistry, oral hygiene, and Boolean parameters AND, OR and NOT. Results: BF reduces the risk of developing acute and chronic diseases. It is the best practice to ensure proper growth of the craniofacial complex with optimal breathing, feeding and sleeping functions. Prolonged BF is not a risk factor for ECC. Breast milk protects against ECC.
Conclusions:The evidence shows that ECC is related to the presence of sugar in the diet and not to breastfeeding. Breast milk is a protective factor against ECC, but good oral hygiene and a diet reduced in sugars are recommended.