Introduction: Supernumerary teeth continue to occur more frequently worldwide, with a prevalence of 0.3 to 3.8%, depending on the dentition. Up to 28% in patients with congenital anomalies and 1% in non-syndromic patients.

Objective: To analyze the literature on the etiology, epidemiology, classification and management of supernumerary teeth.

Methodology: A search strategy was carried out in PubMed, Scopus and Google Scholar databases, using a combination of keywords including: "supernumerary teeth", "etiology", "epidemiology", "classification" and "management".

Results: The main cause of supernumerary teeth formation was found to be local hyperactivity of the dental lamina, as well as hereditary and environmental factors. The prevalence of these is 0.3 to 0.8% in the primary dentition and 1.5 to 3.8% in the permanent dentition. The most common supernumerary tooth in pediatric patients is the mesiodens and the upper lateral incisor, of the supplementary type. The correct management will depend on the case of each patient, where the tooth can be kept in the mouth being functional, or extracted if it represents complications.

Conclusion: The main cause of supernumerary teeth is local hyperactivity of the dental lamina, hereditary and environmental factors, these are present in 0.3 to 0.8% and 1.5 to 3.8%, in primary and permanent dentition, respectively. It is more common to find supplementary mesiodens and upper lateral incisor in children and the correct management is to keep it in the mouth or extract it, depending on the patient.