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Abstract Dental caries is a serious multifactorial oral disease that causes demineralization of the tooth’s hard tissues and affects more than half of the world's population. The objective of this exploratory systematic review was to determine the prevalence of dental caries in Mexican children and adolescents, as well as related factors such as sex, nutritional status, type of dentition, education, living conditions, socioeconomic level, and the type of demographic area. The eligibility criteria to be considered were observational studies whose sample included Mexicans 0-15 years of age in which the prevalence or an index of dental caries had been evaluated. Eligible studies were identified through the search carried out in 6 databases and manual search, without publication time restriction. Fifty-four studies were found that met the eligibility criteria. In these included studies it was observed that, in the last decades, the prevalence of caries in Mexican children and adolescents exhibits a tendency to decrease this disease. In the 1980s, caries prevalences of up to 92.8% were reported; between 1990-1999, the highest reported prevalence was 97%; from 2000-2009, the highest reported prevalence was 95%; from 2010 to 2019 the highest prevalence was 94.6%; and from 2020 and 2021, prevalences of up to 88.5% were reported. Although there has been a decrease in the prevalence of caries in Mexican children, this disease continues to be linked to biological, behavioral and socioeconomic determinants. Resumen La caries dental es una enfermedad bucodental multifactorial grave que provoca la desmineralización de los tejidos duros del diente y afecta a más de la mitad de la población mundial. El objetivo de esta revisión sistemática exploratoria fue determinar la prevalencia de caries dental en niños y adolescentes mexicanos, así como los factores relacionados como el sexo, el estado nutricional, el tipo de dentición, la educación, las condiciones de vida, el nivel socioeconómico y el tipo de área demográfica. Los criterios de elegibilidad fueron estudios observacionales cuya muestra incluyera mexicanos de 0 a 15 años en los que se hubiera evaluado la prevalencia o un índice de caries dental. Los estudios elegibles fueron identificados mediante la búsqueda realizada en 6 bases de datos y de manera manual, sin restricción de tiempo de publicación. Se encontraron 54 estudios que cumplieron con los criterios de elegibilidad. En estos estudios incluidos se observó que en las últimas décadas la prevalencia de caries en niños y adolescentes mexicanos exhibe una tendencia a la baja. En la década de 1980, se reportaron prevalencias de caries de hasta 92.8%; entre 1990-1999, la mayor prevalencia reportada fue de 97%; de 2000-2009, la prevalencia más alta reportada fue de 95%; de 2010 a 2019 la mayor prevalencia fue de 94.6%; y de 2020 y 2021, se reportaron prevalencias de hasta 88.5%. Aunque ha habido un decremento en la prevalencia de caries en niños mexicanos, esta enfermedad continúa vinculada a determinantes biológicas, conductuales y socioeconómicas.