Objetivo: Sellado periférico en incrustaciones de resina con cemento resinoso dual y resina precalentada con y sin glicerina para inhibir la capa de oxígeno in vitro. Método: El estudio es un diseño experimental, comparativo, transversal y prospectivo. Se utilizo 40 incisivos mandibulares bovinos dividido en dos grupos A y B, subdivididos en 10 piezas dentarias por subgrupo conservadas a 4°C, las cuales fueron expuestas a 10 000 termociclos entre 5°C y 55°C, posteriormente sumergidas en azul de metileno al 2%, posteriormente seccionadas longitudinalmente y observadas en el estereomicroscopio. Resultados: El sellado periférico sin glicerina de las restauraciones de resina cementadas con cemento resinoso dual Duo-Link Universal y resina precalentada Filtek Z250 XT fueron 299.6 µm y 245.4 µm respectivamente no evidenció diferencia estadística significativa (p > 0.05), en contras...

COVID-19 is a recent disease, this virus has shown in various studies to have an approximate incubation time of five days. The health areas, including the area of dentistry, have been seen in a panorama of high vulnerability and exposure, this has allowed modifying the role of the dental surgeon during this pandemic, adopting new biosafety guidelines to keep the health of healthcare personnel and patients. Thus, the protocols for the use of PPE, oral cavity antisepsis and disinfection have become pillars of emergency and emergency treatment care. The objective of this literature review is to highlight the information collected during the health crisis and the updating of protocols adopted by dental surgeons and healthcare personnel to provide adequate care during the pandemic.