Dental caries is one of the major diseases of the oral cavity affecting humans worldwide. Different alternatives have been used for its control, but its incidence and prevalence are still high. On the other hand, silver has been used for centuries due to its antimicrobial properties. With advances in nanotechnology, the use and research in nanomaterials has increased, recently, and silver nanoparticles have become an essential part of the dental practice, giving materials physical and chemical improvements in their properties, used for their antibacterial capacity preventing and arresting dental caries. The objective of this review was to examine the use of silver nanoparticles, in the treatment of dental caries in the remineralization of teeth hard tissues, as well as the antimicrobial potential, cytotoxicity, and long-term effectiveness.

The authors studied the frequency, distribution, and factors associated with prediabetes (fasting glucose, 100-125 mg/dL) in rural and urban children from San Luis Potosí, León, and Querétaro in central Mexico. Family history, somatometry, and levels of fasting insulin, glucose, and lipids were collected in 1238 children 6 to 13 years of age. The authors found no cases of type 2 diabetes and a 5.7% frequency of prediabetes. The group with prediabetes had higher homeostasis model assessment of insulin resistance scores and total cholesterol and high-density lipoprotein cholesterol levels. Prediabetes was more frequent in León, with similar distribution in rural and urban children. The frequency of insulin resistance was 24.1%, with higher figures in urban groups and in San Luis Potosí. In multivariate analysis, prediabetes was associated with insulin resistance and residence in León. The authors concluded that in central Mexico the frequency of prediabetes is significant, and it is associated with insulin resistance and a geographic location, but not with obesity or urban vs rural dwelling.

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El objetivo del estudio fue comparar el grado de sellado marginal e interfase dentinaria de diferentes materiales de restauración temporal en molares temporales con pulpotomía. Se realizó un estudio experimental in vitro en 51 piezas dentales extraídas, divididos en 3 grupos de estudio de 17 molares, todas las piezas recibieron tratamiento de pulpotomía, después del cual se colocó el material de restauración temporal en el espacio de la cámara pulpar: A. Ionómero de vidrio Fuji IX. B. CAVIT. C. IRM. Se evaluó la pérdida de sellado marginal y presencia de interfase con la pared dentinaria por medio del microscopio óptico polarizado de transmisión. Se encontraron diferencias estadísticamente significativas entre los grupos de estudio (p < 0.05); existiendo un menor grado de sellado en el grupo del ionómero de vidrio Fuji IX evidenciando la presencia de filtración marginal, lo que puede ocasionar el fracaso del tratamiento. CAVIT e IRM se comportaron de forma muy similar en sus propiedades de sellado.