Antecedentes: Existen pocas investigaciones que muestren cómo la caries de aparición temprana (CAT) afecta a la mayoría de los niños peruanos. Sin embargo, es aún menor la cantidad de estudios que muestran cómo la CAT y la necesidad de tratamiento (NTx) afectan la calidad de vida de los menores. Objetivo: Evaluar el impacto de la salud bucal sobre la calidad de vida según CAT y NTx en preescolares del Perú. Materiales y métodos: Se realizó un estudio descriptivo-transversal conformado por una muestra de 360 niños de 3 a 5 años de una institución educativa pública del distrito de Independencia, en Lima. Los niños fueron examinados con el índice CEOD, NTx y el cuestionario de Escala de impacto de la salud oral en infancia temprana (ECOHIS). Los datos fueron analizados con estadística descriptiva y para relacionar se usó ANOVA y Kruskal Wallis (p<0,05). Resultados: La prevalencia de CAT fue de 73,6% y la NTx más requerida fue la “obturación superficial”. Se encontraron diferencias estadísticamente significativas tanto para CAT como para NTx en relación con todos los dominios de calidad de vida. Conclusiones: La CAT y la NTx tienen impacto negativo en la calidad de vida de los preescolares.
At present, worrying quantities of tires are discarded due to the growth in demand for vehicles in the world, which has a direct impact on the deterioration of the environment since they normally go to landfills. Based on the background found, the use of this material for geotechnical applications can help reduce the pollution they generate and improve the physical and mechanical properties of soils. Therefore, this research seeks to evaluate a greater shear strength and capacity of support to the penetration of the clayey soil by means of the addition of 1.5%, 2.5% and 3.5% of rubber powder recycled. For this, the Atterberg limits analysis, the modified proctor compaction test, shear box and CBR were performed. For the shear box test, the results reflect that the cohesion of the mixture increased and the angle of internal friction decreased with respect to the natural soil, resulting in the sum in an increase of shear strength. On the other hand, the percentage of CBR increased, this means that the rubber helped the soil to be more rigid and have a greater resistance to penetration. These mixtures could be used in different projects within geotechnical engineering, as it presents an improvement in shear strength and an acceptable support index value (CBR).
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