Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

Introducción: La medicación intracanal con antibióticos se utiliza para asegurar el éxito de los tratamientos. Sin embargo, no se han reportado estudios que evalúen la eficacia de la pasta triantibiótica después de varias horas de preparación.Objetivo: Evaluar la actividad antimicrobiana de la pasta triantibiótica frente al Enterococcus faecalis, según el tiempo de aplicación y de almacenamiento de los componentes utilizados para su preparación.Métodos: Estudio experimental in vitro, realizado en el laboratorio de microbiología de la Universidad Nacional Mayor de San Marcos. La muestra consistió en tres colonias de Enterococcus faecalis, formadas en agar bilis-esculina. En tres días específicos (0, 14 y 28) se evaluó la actividad antimicrobiana de la pasta convencional (ciprofloxacina/metronidazol/minociclina) y modificada (cefaclor/metronidazol/minociclina), midiendo las zonas de inhibición (mm). Los componentes recién obtenidos se utilizaron para preparar la pasta el día 0, y los componentes almacenados (antibióticos pulverizados conservados en frascos de vidrio color ámbar a temperatura ambiente) se utilizaron los días 14 y 28. Se realizaron dos intervenciones en cada día específico (mañana y tarde). Las pastas recién preparadas se utilizaron por la mañana (aplicación inmediata), mientras que por la tarde se utilizaron las pastas almacenadas durante 6 horas (aplicación tardía).Resultados: El día 0, se encontró que la pasta triantibiótica modificada de aplicación inmediata presentó una actividad antimicrobiana superior a la de aplicación tardía (p = 0,046). El día 28, la pasta triantibiótica convencional de aplicación inmediata presentó una actividad antimicrobiana superior a la de aplicación tardía (p = 0,049). La pasta preparada con componentes recién obtenidos (día 0) tuvo una mayor actividad antimicrobiana que la pasta preparada con componentes almacenados durante 14 y 28 días.Conclusiones: El tiempo de aplicación de la pasta triantibiótica y los tiempos de almacenamiento de los componentes podrían influir en la actividad antimicrobiana para la erradicación de Enterococcus faecalis. Esta página está en Latin Traducir al Spanish    AfrikaansAlbanianAmharicArabicArmenianAzerbaijaniBengaliBulgarianCatalanCroatianCzechDanishDutchEnglishEstonianFinnishFrenchGermanGreekGujaratiHaitian CreoleHebrewHindiHungarianIcelandicIndonesianItalianJapaneseKannadaKazakhKhmerKoreanKurdish (Kurmanji)LaoLatvianLithuanianMalagasyMalayMalayalamMalteseMaoriMarathiMyanmar (Burmese)NepaliNorwegianPashtoPersianPolishPortuguesePunjabiRomanianRussianSamoanSimplified ChineseSlovakSlovenianSpanishSwedishTamilTeluguThaiTraditional ChineseTurkishUkrainianUrduVietnameseWelsh Traducir siempre del Latin al SpanishPRO No traducir nunca del Latin No traducir nunca del www.revestomatologia.sld.cu

Introducción: La fijación de las restauraciones indirectas es uno de los pasos más importantes, para conseguir una adecuada retención y sellado de la interfase entre el material restaurador y el diente.Objetivo: Evaluar la resistencia de unión al cizallamiento de diferentes agentes de fijación a dos aleaciones metálicas utilizadas en odontología.Métodos: Estudio experimental in vitro. Cien especímenes de aleaciones de metales base, 50 de níquel-cromo y 50 de níquel-cromo-titanio fueron preparados y divididos de manera aleatoria en 5 grupos. Esta división se realizó acorde con el agente de fijación utilizado: sistema autograbante de dos pasos (Clearfil SE Bond; CSB), sistema adhesivo universal (Single Bond Universal; SBU), cemento resinoso autoadhesivo (Maxcem Elite; ME), ionómero de vidrio (IV) y fosfato de zinc (ZnPO). Posteriormente a la aplicación de cada agente de fijación, los especímenes tratados fueron almacenados en agua destilada por 24 h a 37 ºC y sometidos a un ensayo de resistencia de unión al cizallamiento.Resultados: La resistencia de unión al cizallamiento fue influenciada significativamente por el tipo de agente de fijación (p = 0,002) y el tipo de aleación utilizada (p < 0,001). La resistencia de unión al cizallamiento fue mayor, al utilizar el sistema Clearfil SE Bond, seguida de Single Bond Universal; las diferencias entre Maxcem Elite y el Fosfato de zinc no fueron significativas. Finalmente, el IV no mostró adhesión a ninguna de las aleaciones metálicas utilizadas.Conclusiones: El uso de Clearfil SE Bond aumentó la resistencia de unión de los cementos resinosos a las aleaciones metálicas.

Between 5% and 10% of the population will experience a crisis in life, with a higher incidence in childhood and in older adults. A seizure is a paroxysmal episode caused by abnormal, excessive firing or synchronous neuronal activity in the brain. With different forms of manifestation, according to the distribution of the depolarizations. Meanwhile, epilepsy is a disorder accompanied by several recurrent crises, due to an underlying chronic process. The definition of epilepsy will vary according to the clinical context and the encephalograms of each patient. Among the multiple causes, there will be different epileptic syndromes, each with peculiar manifestations and pathologies, suggestive of a specific underlying etiology. Taking this into account, it is estimated that the incidence is approximately 0.3% to 0.5%, with a prevalence of 5 to 30 per 1000 inhabitants. The purpose of this review is to educate and update health professionals, researchers, and even patients. This through a review of the pathophysiological mechanisms of epilepsy and the therapeutic targets of the current anti-seizures, and the new anti-seizures approved by the FDA. In addition, of the adverse effects and the important pharmacological interactions of these. All this, to highlight current advances in pharmacological treatment, the importance of developing new anti-crisis, and to facilitate the choice or combination of the most appropriate anti-seizure for patients.

Critical thinking skills are undoubtedly the 21st-century skills that people use in their daily lives. In this context, this action research had as its main objective to evaluate the contribution of the use of short animated videos to improve higher-order thinking skills (analyze, create and evaluate) of first-year undergraduate students, both in oral production tasks as well as in written tasks in English, during the COVID-19 pandemic. Furthermore, it explored students’ perceptions in relation to their improvement in their own critical thinking skills. The data obtained were analyzed using descriptive statistics, specifically, measures of central tendency. Additionally, the non-parametric Wilcoxon test was used in the measurements that were made in the writing ability to verify if the change observed in the participants’ development of critical thinking skill was statistically significant. The results obtained revealedthat after the intervention, an improvement was observed in the development of the undergraduates’ critical thinking skills (analysis, evaluation, creation) in both language skills (writing and speaking). In a more exhaustive statistical analysis through the non-parametric Wilcoxon test applied to the writing tests’ measurements, an increase among undergraduates’ critical thinking skills was observed. The results of the tasks developed correlated positively with the students’ perceptions, which was collected through a Likert scale. In conclusion, the study showed that the use of short, animated videos effectively helped first-year undergraduatestudents improve their higher-order critical thinking skills, during the COVID-19 crisis.

As court gardener for the Royal Gardens of Herrenhausen, the German botanist Hermann Wendland travelled to Central America in 1856-1857 under the auspices of the King of Hannover, to collect living plants and herbarium specimens for the gardens. He wrote a travel diary of his nearly eight-month expedition through Guatemala, El Salvador, and Costa Rica, which was published in the journal Hamburger Garten- und Blumenzeitung. In this paper we provide an annotated Spanish translation of the first part of that document, which covers the journey from Guatemala to his stay in the Central Valley of Costa Rica. Wendland’s contribution was significant in regards to the large number of new species described from his botanizing, which correspond to more than 185 that were new to science from a total of about 540 gatherings represented by about 1280 extant specimens, mainly orchids, palm trees and aroids; most of his botanical collection is held in the herbarium of the University of Göttingen (GOET). In his account, Wendland did not restrict himself to botanical matters, but also encompassed a wealth of aspects of the daily life of Central American people, describing their traditions, food, health, religion, culture and politics. Among the latter he wrote about the capitulation of the filibuster leader William Walker who, with the support of the United States slave states, attempted to establish slavery and annex the five Central American countries for the United States.

The present work sustains that the dramatic piece Electra Garrigó by Virgilio Piñera retakes the tragic argument from the Atreides myth developed in Aeschylus’ hypotext to turn the communicative intention of the tragic genre and update it in a work of hybrid structure and development that contains formal elements that belong to farce. We will explore how one of the mechanisms in the farce dramatic subgenre operates in Electra Garrigó; i.e., the substitution psychology of the characters, which manifests itself when the psychic facts are moved from one character that should execute them to another character completely opposed and viceverse. As a result, there is a modification in the moods of the characters. Therefore, the myth is transvalued to reflect upon the family, the genesis of society: the Atreides core family becomes the personification of fundamental attitudes from the Cuban bourgeoisie and even of the whole humanity. The dynamics of the Atreides family, a relationship system from which Electra will redeem Orestes and will be emancipated, is established through the freedom evasion mechanisms described by Erich Fromm. Through its formal and thematic constitution, the drama expresses Piñeira’s social concerns derived from the Cuban Neo-colony.

This work inquiries the influence of Whitehead’s cosmology on Talcott Parsons’s analytic realism, a perspective that links sociology with a series of philosophical problems which are mainly of ontological and epistemological character. To do this, the foundations if analytical realism are first exhibited, along with the controversies that arise around it. Later, some general outlines of whiteheadian cosmology are outlined. Subsequently, both points are compared in search of the repercussions of Whitehead’s thought on analytical realism. The controversies opened by analytic realism are resumed in order to observe them it in the light of the collation made in the previous sections. Finally, the conclusions present the results obtained, and reflect over the Parsonian modality to link philosophy and sociology and to distinguish theoretical from empirical research.

Over the last few years, educators have been witnessing how pedagogical translation is being reincorporated into the language classroom (Carreres et al., 2018; Pintado Gutiérrez, 2020). The present study examines the effects of pedagogical translation on learning the personal a in Spanish, also known as Differential Object Marker (DOM), a grammatical property that posits a challenge for English-speaking learners of Spanish (Bowles &amp; Montrul, 2009), even among speakers who have resided in a Spanish-speaking community for an extended period of time. To this end, 10 anglophone advanced learners of Spanish, enrolled at a public universityin Utah, completed a pretest, an immediate posttest, and a delayed posttest that examined their knowledge of the personal a in Spanish. Quantitative analyses revealed that the advanced second language learners clearly benefited from the use of pedagogical translation (English&gt;Spanish) in the classroom. Our findings are in line with those of Gasca Jiménez (2017) and Barbasán Ortuño et al. (2018) and contribute to the existing literature on pedagogical translation that highlights the benefits of translation in language learning and unreservedly advocates for the use of translation in the language classroom.

In this article, we discuss the implications of having indigenous students in training programs at a university level. The discussion arises from the findings of a case study conducted in the undergraduate program on foreign language teaching (English and French), in a Colombian university. Eight indigenous students coming from different ancestral communities participated in this study. Data come mainly from individual and collective interviews conducted with the students as well as focus groups conducted with their teachers. Findings suggest implications in three domains: at an institutional level, at a pedagogical and methodologicallevel, and for the students themselves. A plurilingual and intercultural perspective can illuminate the different actions that could be implemented in each of these domains, in order to contribute to a fairer and more equitable foreign language education.

The poems in this section are a sample of the new Costa Rican poetry whose authors were born after 1990. The themes that emerge are linked to the experience of the Caribbean: the sea, the gastronomy that characterizes this region, and its eroticism.