Introduction: Current dentistry prioritizes preventive measures as an effective way of reducing the main diseases that affect the oral cavity. Any alteration of the dentin-pulp complex, if not treated, can act as an irritant and trigger a pulp inflammatory process. Objective: to determine the main causes and treatment of dental pulp disorders in patients under ten years of age. Methods: a cross-sectional descriptive observational research was carried out. The universe consisted of 30 pediatric patients, working with all of them. Individual non-digitized medical records were used to obtain the information. Descriptive statistics were used for data analysis by calculating absolute and relative percentage frequencies. The ethical standards set forth in the II Declaration of Helsinki were respected. Results: it was found that 60 % of them were caused by dental caries, followed by iatrogenic medical causes (27 %) and trauma with 13 % of the total sample. 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