Coronaviruses are a family of lipid-enveloped, single-stranded, positive RNA viruses that may be present in vertebrates, causing respiratory, enteric, liver, and neurological diseases.1 There are two members of this family that have previously affected humans severely, the severe acute respiratory syndrome coronavirus (SARS-CoV) and the Middle East respiratory syndrome coronavirus (MERS-CoV), related to respiratory diseases.2

Objetivo. Evaluar el grado de sellado marginal y resistencia adhesiva en resina Bulk – Fill aplicando gel de EDTA al 18% en comparación al gel de ácido fosfórico al 37% en el acondicionamiento dental. Materiales y métodos. El tipo de estudio fue transversal, comparativo, de nivel aplicativo y diseño experimental. La muestra estuvo conformada por 60 dientes con cavidades clase I; se realizó el acondicionamiento con gel de ácido fosfórico, gel del EDTA al 18% en 60 segundos y 90 segundos. El total de la muestras fueron incubados a 37°C por 24 horas, se termocicló con 500 ciclos entre 5 a 55ºC. Para evaluar microfiltración, fueron sumergidos en azul de metileno a 37ºC por 4 horas, fueron seccionadas y observados al estereomicroscopio, para realizar la tracción se empleó la máquina de ensayos universales a una velocidad de 0.75mm/min hasta que se desprendiera el tornillo co...

The information presented gives an excellent historical description of the appearance and evolution of the Coronavirus disease 2019; describes precisely the taxonomic, biological and genomic characteristics of SARS-CoV-2 and provides us with updated epidemiological data that allows us to have a clear idea of how the virus is spreading worldwide. On the other hand, it emphasizes the importance of being prepared to fight against infectious diseases because this disease has a rapid evolution that results in fear not only in people in general but also in the health professionals who must necessarily be in direct contact with the patient, as in the case of the dentist. For this reason, we would like to specify certain dental clinical recommendations, based on the scientific evidence available up to now.

Introducción: El té verde (Camellia sinensis) y el propóleo presentan flavonoides, que inhiben el crecimiento, metabolismo y la coagregación del Streptococcus mutans, principal agente causal de la caries dental. Objetivo: Evaluar la actividad antibacteriana in vitro del extracto etanólico del té verde (Camellia sinensis) al 10 % y 20 % comparado con extracto etanólico de propóleo al 10 % y 20 %, frente al crecimiento de cepas de Streptococcus mutans (ATCC 25175). Métodos: Estudio experimental in vitro, longitudinal, prospectivo y comparativo. El universo estuvo constituido por 90 discos de difusión y la muestra por 15 discos embebidos en té verde (Camellia sinensis) o propóleo a diferentes concentraciones, clorhexidina acuosa al 0,12 % y agua destilada. El tamaño de muestra se calculó por fórmula de comparación de medias, después de realizar un estudio piloto. Se colocar...

La presente investigación tuvo como objetivo evaluar el efecto antibacteriano in vitro del Croton lechleri en el crecimiento de cepas del Streptococcus mutans (ATCC 25175). Este trabajo responde a un diseño experimental in vitro, de tipo aplicada, transversal, prospectivo, y de nivel descriptivo. Para la cual se usaron concentraciones diferentes del Croton lechleri y se midieron los halos de inhibición formados alrededor de los discos embebidos con cada una de las concentraciones sobre las cepas del Streptococcus mutans (ATCC 25175). Como resultado se obtuvo que las concentraciones de 100% y 75% del Croton lechleri mostraron efecto inhibitorio positivo en los cultivos de cepas del Streptococcus mutans (ATCC 25175), mientras que la concentración del 40% no tuvo efecto inhibitorio en los cultivos de cepas del Streptococcus mutans (ATCC 25175). En conclusión existe un efecto ant...

Objective. To determine the relationship between the height of the periapical lesions adjacent to the maxillary sinus and the thickness of the Schneider membrane evaluated with cone-beam tomography. Materials and Methods. The universe was made up of 2432 tomography scans and a sample of 976, by systematic random sampling, and took into account those that presented any of the variables and/or both. For the relationship analysis, the sample was distributed according to sex, maxillary side, and age; it was formed between 18 and 86 years, in age groups of 18–36 years, 37–48 years, 49–59 years, and 60–86 years. The quantitative variables of the statistic descriptive analysis, hypothesis tests, and Spearman correlation were recorded. Results. A significantly low correlation (p < 0.010) was observed between the periapical lesions and the thickness of the Schneider membrane in women (rho...

Se evaluó la actividad antibacteriana in vitro del Camellia sinensis (té verde) y propóleo en comparación con la clorhexidina al 0.12%, frente al crecimiento de cepas de Streptococcus mutans, éste estudio fue experimental in vitro, longitudinal, prospectivo y comparativo, se colocó discos de difusión sumergidos en propóleo al 10%, 20%, té verde al 10% y 20%, clorhexidina al 0.12% (control positivo) y agua destilada (control negativo) en 15 placas petri, haciendo medición de halos a las 24 y 48 horas; se aplicó las pruebas no paramétricas de Kruskal Wallis para tres grupos independientes y la comparación entre pares independientes, U de Mann Whitney; para muestras independientes y se utilizó la prueba Rangos de Wilcoxon para muestras relacionadas, fueron contrastadas a un nivel de confianza del 95% y nivel de significancia de 5%. A las 24 horas el té verde 10% y clorhexidin...

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The use of bleaching agents, despite being a conservative treatment, can cause a decrease in the surface microhardness of dental resins, affecting their aesthetics and performance. The aim of this study was to evaluate the in vitro effect of polishing on the surface microhardness of nanohybrid composite resins that were subjected to bleaching with 35% hydrogen peroxide. Materials and Methods: This cross-sectional, in vitro experimental study consisted of 30 composite resin samples made according to ISO 4049-2019 and divided equally into two groups (A and B) which were subjected to 35% hydrogen peroxide bleaching. Group A was subjected to polishing procedure, whereas group B was the control group. The samples were stored in distilled water at 37°C for 24 h. The Vickers microhardness was determined with a load of 100 g-f for 10 s. The data were analyzed with Student’s t-test for indepen...

The COVID-19 pandemic has generated much concern worldwide. Due to its high transmissibility, many young university students have had to carry out their academic activities in mandatory social isolation, which could generate excessive anxiety. Therefore, the aim of this study was to evaluate the anxiety levels in Peruvian dentistry students developed during COVID-19 mandatory social isolation. Materials and Methods: An analytical, observational, and transversal study was carried out in 403 dentistry students in the last two years from three Peruvian universities from May to July 2020. The Zung Self-Rating Anxiety Scale was used to detect anxiety symptoms and their respective diagnoses. A logit model was used to evaluate the association of the variables: age group (X1), gender (X2), type of university (X3), and marital status (X4), with the anxiety levels of the students, considering a p-...

Objetivo: evaluar el efecto antibacteriano del peróxido de hidrógeno (H2 O2 ) al 6% comparado con hipo clorito de sodio (NaClO) al 1% y al 2%, sobre cepillos dentales inoculados con Streptococcus mutans atcc® 25175™. Materiales y métodos: estudio experimental in vitro, transversal y comparativo. Se utilizaron 60 cepillos dentales, divididos en 4 grupos de 15 cepillos cada uno. El número de muestra lo determinó la fór mula de comparación de medias, después de realizar un estudio piloto, y se seleccionaron por muestreo aleatorio simple. Se aplicaron las pruebas de normalidad de Shapiro-Wilk, y para la prueba de hipótesis, la U de Mann-Whitney. Resultados: el H2 O2 al 6% presentó una media de crecimiento de 2×109 ufc/mL, lo que indica que su efectividad es mayor comparada con el NaClO al 1%, que presentó una media de crecimiento de 4×109 ufc/mL, y esta es menor al NaClO al 2...

Objective. To establish the association between the appreciation and psychosocial impact of dental aesthetics with the presence of chromatic alterations and occlusion in young students of health sciences. Material and methods. The study was prospective, cross-sectional, observational and correlational. The sample size was 326 students from 16 to 28 years of age belonging of the Federico Villarreal National University. The subjective evaluations were measured through the Psychosocial Impact Questionnaire of the dental aesthetics (PIDAQ) and for the appreciation, dental photographs of the previous sector were taken and these were presented on a digital tablet, where the participants rated the aesthetics of the color and position of your teeth by Likert scal. Likewise, alterations in occlusion were evaluated using the Dental Aesthetic Index (DAI) and chromatic alterations, caused by enamel ...

OBJETIVO: La Telesalud en Perú ha cobrado relevancia como una alternativa para mejorar el acceso a servicios de salud, fundamentalmente en regiones remotas y con población vulnerable. El propósito del estudio fue analizar el papel de la telesalud en la cobertura universal de salud en el Perú. MÉTODO: La recopilación documental de la revisión bibliográfica se realizó de enero a marzo del 2025, utilizando palabras clave "salud digital", eSalud, mSalud "cobertura universal de salud ", "Perú", "tecnologías de la información en salud", “Telesalud”, “Telemedicina”, “Telecapacitación”, “TeleIEC”, “Telegestión”. La búsqueda incluyó documentos en español e inglés provenientes de bases de datos s como PubMed, Scopus, y Lilacs, además de fuentes oficiales como el Ministerio de Salud del Perú (MINSA), la Organización Mundial de la Salud (OMS) y el Centro Naci...

“Aim: In dental practice there is a high risk of contact with fluids that may contain SARSCoV-2. Salivary secretions in the form of droplets are the main route of infection. The present study aimed to evaluate factors associated with epidemiological, preventive and health care knowledge of dentists from the north of the Peruvian capital about COVID-19. Materials and Methods: This analytical, observational, cross-sectional and prospective study evaluated 142 dental professionals from the Directorate of Integrated Health Networks (DIRIS) in the north of the Peruvian capital during June to August 2022. A validated questionnaire of 20 closed multiple-choice questions was used to measure the level of epidemiological, preventive and health care knowledge about COVID-19. A logit model was used to evaluate the influence of the following variables: age, sex, marital status, children, origin, un...

“Aim: In dental practice there is a high risk of contact with fluids that may contain SARSCoV-2. Salivary secretions in the form of droplets are the main route of infection. The present study aimed to evaluate factors associated with epidemiological, preventive and health care knowledge of dentists from the north of the Peruvian capital about COVID-19. Materials and Methods: This analytical, observational, cross-sectional and prospective study evaluated 142 dental professionals from the Directorate of Integrated Health Networks (DIRIS) in the north of the Peruvian capital during June to August 2022. A validated questionnaire of 20 closed multiple-choice questions was used to measure the level of epidemiological, preventive and health care knowledge about COVID-19. A logit model was used to evaluate the influence of the following variables: age, sex, marital status, children, origin, un...

Aim: The current study compared the push-out adhesive strength of glass fiber-reinforced posts with a silane-treated surface versus a universally adhesive-treated surface. In both cases, a universal self-adhesive cement was used. Materials and Methods: Thirty bovine teeth were used in an in vitro experiment. Through cutting, the root and coronal sections were divided. Subsequently, the manufacturer’s recommendations were followed for the placement of glass fiber-reinforced posts through root canal therapy, gutta-percha removal, and canal shaping. On the basis of how the posts were treated prior to cementation, the samples were split into three groups (n = 10). Posts in group A (control) did not get any prior treatment. Posts in group B had previously received a silane treatment. Posts in Group C had previously been coated with universal adhesive. Following the application of RelyX Ulti...

Aim: In dental practice there is a high risk of contact with fluids that may contain SARS-CoV-2. Salivary secretions in the form of droplets are the main route of infection. The present study aimed to evaluate factors associated with epidemiological, preventive and health care knowledge of dentists from the north of the Peruvian capital about COVID-19. Materials and Methods: This analytical, observational, cross-sectional and prospective study evaluated 142 dental professionals from the Directorate of Integrated Health Networks (DIRIS) in the north of the Peruvian capital during June to August 2022. A validated questionnaire of 20 closed multiple-choice questions was used to measure the level of epidemiological, preventive and health care knowledge about COVID-19. A logit model was used to evaluate the influence of the following variables: age, sex, marital status, children, origin, univ...

Aim: The aim of this study was to compare the microtensile bond strength (µTBS) and failure mode of 4 different universal adhesive systems (UAs) on human dentin. Materials and methods: The study sectioned the occlusal thirds of 32 human third molars and divided them into 4 groups based on the adhesive system used. Group A: Palfique Universal Bond, Group B: Single Bond Universal, Group C: All-Bond Universal, and Group D: One Coat 7 Universal. The specimens underwent a 10,000-cycle thermocycling ageing process prior to testing (n = 32). Afterwards, 8 beams were obtained per group and subjected to µTBS testing using a digital universal testing machine at a speed of 1 mm/min. The microtensile bond strength values were analysed in Megapascals (MPa), and the failure mode was evaluated using a stereomicroscope. Welch's parametric ANOVA with robust variance and the Games-Howell post hoc test w...

Aim: The aim of the present preliminary study was to determine sugar concentration in infant follow-on formulas most widely consumed in Peru. Materials and methods: In this descriptive and observational study, the sample was represented by five brands of infant follow-on formulas most consumed in Peru (A, Similac 2; B, Enfamil 2®; C, NAN 2®; D, Baby Lac Pro 2®; and E, Lacti Kids Premium 2®); with two samples of each, collected at two different locations in the Peruvian capital. Subsequently, the concentration of total and individual sugars (lactose, sucrose, glucose, fructose, and maltose) was determined using the high-performance liquid chromatography (HPLC) method in a specialized laboratory. For the comparison of means, Welch’s robust analysis of variance (ANOVA) test for equality of means and Tukey’s post hoc test were used. The significance level was p < 0.05. Results: The t...