Color stability and degree of conversion of gingiva-colored resin-based composites

Objectives: To evaluate gingiva-colored resin-based composites' (GCRBC) color stability and degree of conversion (DC%). Methods: Eight discs (8 1 mm) of 20 shades of GCRBC were prepared. Color coordinates were measured against a gray background with a calibrated spectroradiometer, CIE D65 illuminant and the CIE 45 /0 geometry at baseline and after 30 days of storage in distilled water, coffee, and red wine. Color differences (ΔE00) between final and baseline conditions were calculated. An ATR-FTIR spectrometer with a diamond tip was used to calculate DC%. The results were analyzed statistically using ANOVA and Tukey post-hoc test. The level of significance was p < 0.05. Results: DC% and color stability correlated with each other and with the GCRBC brand. DC% ranged between 43% and 96%, highest values correspond to flowable composites. All composites have experienced color changes after immersion in water, wine and coffee. However, the magnitude of the color change has varied widely depending on the immersion medium and the GCRBC. Color changes generated by the wine were, globally, greater than those induced by coffee (p < 0.001) and above the acceptability thresholds. Conclusions: The DC% of GCRBCs is sufficient to achieve adequate biocompatibility and physicomechanical properties, but the high susceptibility to staining could compromise aesthetic long-term results. Clinical Significance: The degree of conversion and the color stability of gingivacolored resin-based composites correlated with each other. All composites have experienced color changes after immersion in water, wine and coffee. Color changes generated by wine were, globally, greater than those induced by coffee and above the acceptability thresholds that could compromise aesthetic long-term results.Junta de Andalucía, Grant/Award Number: P20-00200; Universidad de GranadaGrant/Award Number: CBU

Does Backgrounds Color Influence the Appearance of Gingiva-Colored Resin-Based Composites?

This research was funded by the Spanish Ministry of Science, Innovation and Universities, grant number PGC2018-101904-A-100, the Government of Andalusia, grant number P20-00200, the University of Granada, grant number A.TEP.280.UGR18, and the APC was funded by the grant number PGC2018-101904-A-100.Dental materials are mainly tested in vitro, so laboratory conditions must reproduce the oral environment to ensure the validity of their results. This study aimed to evaluate the influence of backgrounds on the color of gingiva-colored resin-based composites (GCRBC). Three discs of each of 20 shades of GCRBCs and each thickness (1 and 2 mm) were prepared. Diffuse reflectance was measured on-air and over three natural teeth (0M3/B1, 3M3/B3, and 5M3/B4 shades of Vita 3D Master/Vita Classical guides, respectively) using a calibrated spectroradiometer, CIE D65 illuminant and the CIE 45 degrees/0 degrees geometry. CIEDE2000 color difference formula and its 50:50% perceptibility and acceptability thresholds have been used to calculate and interpret the results. It can be stated that the background influences the color of all GCRBCs tested, although the effect is more pronounced for 1 mm thick samples. L*, a* and b* coordinates values of GCRBCs on air were significantly different from those obtained on natural teeth backgrounds, and the total color differences were greater than the acceptability thresholds. Since GCRBCs are placed on a dental substrate in clinical conditions, it is not advisable to perform color measurements of GCRBCs on-air because of the high color differences found. This recommendation is especially relevant for thin specimens.Spanish Government PGC2018-101904-A-100Government of Andalusia P20-00200University of Granada A.TEP.280.UGR1

Relevant optical properties for gingiva-colored resin-based composites

The authors acknowledge funding support from the Spanish Ministry of Science, Innovation and Universities (PGC2018-101904-A-100) and from the i+D+I Government of Andalusia 2020, Spain (P20-00200).Objectives: To evaluate the optical properties of gingiva-colored resin-based composites (GCRBCs). Methods: Five discs (8 mm diameter x 1mm height) of 17 shades of GCRBCs were prepared. Diffuse reflectance was measured against white and black backgrounds using a calibrated spectroradiometer, CIE D65 illuminant and the CIE 45⁰/0⁰ geometry. Relative translucency parameter was calculated using ΔE00 (RTP00). Translucency differences were evaluated using published data of 50:50% translucency perceptibility (TPT00) and acceptability (TAT00) thresholds. Scattering (S) and absorption (K) coefficients and transmittance (T%) were calculated using Kubelka–Munk’s equations. Data were statistically analyzed using Kruskal–Wallis, Mann–Whitney tests, and VAF coefficient. Results: The RTP00 values of the 17 evaluated shades ranged from 8.69 to 21.34. There were perceptible translucency differences (TPT00=0.62) between different shades of the same brand and between composites designated with the same shade of different brands. Spectral distributions of S, K and T were wavelength- dependent. Although the spectral behavior of the S and K coefficients and T% were similar for all the gingival composites evaluated, the values of these parameters presented statistically significant differences between shades, which would justify the differences found in the relative translucency parameter. Conclusions: The optical properties S, K and T% of GCRBCs were significantly different, resulting in perceptible translucency differences between the same shade of different commercial brands and between different shades of the same brand. Clinical significance: Translucency differences of gingiva-colored composites may significantly influence their masking ability affecting the clinician’s choice of restorative material.Spanish Ministry of Science, Innovation and Universities (PGC2018-101904-A-100)i+D+I Government of Andalusia 2020, Spain (P20-00200

Estudio de la visión martiana del catastrofismo. Una mirada desde la educación ambiental / Study of Marti's vision of catastrophism. A look from the environmental education

El presente artículo tiene como objetivo constatar las potencialidades que brinda la obra martiana para lograr un desempeño profesional pedagógico ambiental en los profesores, a partir de las descripciones realizadas por Martí sobre catástrofes naturales o provocadas por la acción del hombre. Para la realización de esta tarea se usan los métodos del nivel teórico como el analítico-sintético y el inductivo-deductivo en la interpretación de la visión martiana sobre las catástrofes. Se ofrecen sugerencias para la introducción de una nueva temática nombrada “Visión martiana del catastrofismo. Una mirada hacia la educación ambiental” en el programa de la asignatura “Ética e Ideario Martiano”.The aim of this paper is to ascertain the potential offered by Marti's work to achieve an environmental, educational and professional development on teachers from descriptions by Martí on natural disasters by human action. To perform this task theoretical and analytic-synthetic and inductive-deductive methods were used in the interpretation of Marti's vision of disaster. Suggestions for the introduction of a new vision of Marti on catastrophe. This work is look at the environmental education program of the subject Ethics and Marti Ideology

Efficacy of baths with mineral-medicinal water in patients with fibromyalgia: a randomized clinical trial

The layout of this study, designed as a randomized crossover clinical trial, is to evaluate the efficacy of an intervention with mineral-medicinal water from As Burgas (Ourense) in patients suffering from fibromyalgia. Pre-intervention: randomization of group A and group B. Intervention: Phase 1: Group A: 14 baths in thermal water for a month and standard pharmacological treatment; group B, standard pharmacological treatment. Rest period, 3 months. Phase 2: Gruop A, standard treatment and Grou B, 14 baths in thermal water for a month plus standard treatment. The Fibromyalgia Impact Questionnaire (FIQ) was used; this grades from 1 (minimum) to 10 (maximum) the impact of the illness, which was measured in both phases. 25 patients were included in each group and the study was concluded with 20 patients in group A and 20 in group B. The intervention group obtained, once the baths finished, a mean score of 60,3 (±11,8) and the control group of 70,8 (±13,0) (p <0,001). Three months later, the intervention group presented a mean score of 64,4 (±10,6) and the control group of 5,0 (±11,3) (p <0,001). We can therefore conclude that the simple baths with mineral-medicinal water from As Burgas can make an improvement on the impact caused by fibromyalgia

Catálogo de medios audiovisuales para la enseñanza de la literatura y la historia de Hispanoamérica a través de las Artes escénicas, la Música y la Cinematografía: México y Centroamérica (1850-1900)

Depto. de Literaturas Hispánicas y BibliografíaFac. de FilologíaFALSEsubmitte

Estratégia para a preparação profissional do Tecnólogo em Reabilitação em Saúde

Introducción: el tecnólogo en Rehabilitación en Salud requiere superarse en aras de incrementar sus conocimientos en lo docente e investigativo para mejorar el desempeño profesional.Objetivo: elaborar una estrategia dirigida a incrementar la participación de tecnólogos en Rehabilitación en Salud en acciones dirigidas a su superación profesional.Método: se realizó un estudio descriptivo de corte transversal con 25 Tecnólogos en Rehabilitación en Salud de la Universidad de Ciencias Médicas de Guantánamo en el período 2016-2017.Resultados: el 100,0 % de los tecnólogos manifestó necesidades de superación respecto a contenidos de Metodología de la Investigación y el 92,0 % respecto a contenidos de Pedagogía. Se diseñó e implementó una estrategia para dar solución a estas necesidades que posibilitó que el 92,0 % recibiera preparación pedagógica y el 96,0 % recibiera preparación sobre Metodología de la Investigación.Conclusiones: se concluye que la estrategia que se diseñó e implementó posibilita incrementar la participación de tecnólogos en Rehabilitación en Salud en acciones dirigidas a su superación profesional, lo que significa una contribución a una transformación cualitativamente superior en su desempeño profesional en las funciones docentes e investigativas.Introduction: the technologist in Health Rehabilitation needs to improve himself in order to increase his knowledge in teaching and research to improve professional performance.Objective: to develop a strategy aimed at increasing the participation of technologists in Health Rehabilitation in actions aimed at their professional development.Method: a descriptive cross-sectional study was carried out with 25 Technologists in Health Rehabilitation of the University of Medical Sciences of Guantanamo in the period 2016-2017.Results: 100.0% of the technologists expressed needs for improvement regarding the contents of Research Methodology and 92.0% regarding the contents of Pedagogy. A strategy was designed and implemented to solve these needs that allowed 92.0% to receive pedagogical preparation and 96.0% to receive preparation on Research Methodology.Conclusions: it is concluded that the strategy that was designed and implemented makes it possible to increase the participation of technicians in Health Rehabilitation in actions aimed at their professional development, which means a contribution to a qualitatively superior transformation in their professional performance in teaching and research functions.Introdução: o tecnólogo em Reabilitação em Saúde precisa aprimorar-se para aumentar seus conhecimentos em ensino e pesquisa para melhorar o desempenho profissional.Objetivo: desenvolver uma estratégia que vise aumentar a participação de tecnólogos em Reabilitação em Saúde em ações voltadas ao seu desenvolvimento profissional.Método: foi realizado um estudo transversal descritivo com 25 tecnólogos em Reabilitação em Saúde da Universidade de Ciências Médicas de Guantánamo no período 2016-2017.Resultados: 100,0% dos tecnólogos manifestaram necessidade de aprimoramento em relação ao conteúdo da Metodologia da Pesquisa e 92,0% em relação ao conteúdo da Pedagogia. Foi elaborada e implementada uma estratégia para atender a essas necessidades, permitindo que 92,0% recebessem preparação pedagógica e 96,0% recebessem preparação sobre a Metodologia da Pesquisa.Conclusões: conclui-se que a estratégia elaborada e implementada possibilita aumentar a participação de técnicos em Reabilitação em Saúde em ações voltadas ao seu desenvolvimento profissional, o que significa uma contribuição para uma transformação qualitativamente superior em seu desempenho profissional nas funções de ensino e pesquisa

Extensión en ciencias de la salud. Plan de acción social. Universidad de Carabobo, Venezuela

En esta redacción se hace una breve descripción de la acción social o comunitaria de la medicina de atención primaria en salud y del porque y para que de nuevas estrategias de intervencion, en este caso, el Plan de Acción Social, de la Dirección de Extensión de la Facultad de Ciencias de la Salud, de la Universidad de Carabobo, en la labor de extensión y servicio comunitario que deben realizar todas y cada una de las universidades del país por estar consagrada en el estamento legal venezolano y por constituir la razón de ser de las instituciones de educación superior.In this paper we present a brief description of social or community action, of primary health care medicine, and the why and what for of new strategies of intervention, in this case, the Social Action Plan of the Extension Board of the Faculty of Health Sciences, University of Carabobo, in regards to the extension and community service each and every one of the universities in the country must undertake, as enshrined in the Venezuelan legal order and for constituting the raison d’être of superior education institutions.Neste artigo se faz uma breve descrição da ação social ou comunitaria do sistema de atenção primária de saúde e das razões das novas estratégias de intervenção, neste caso, o Plano de Acção Social, da Diretoria de Extensão da Faculdade de Ciências da Saúde, Universidade de Carabobo, na sua tarefa de extensão e serviço comunitário a ser realizada por cada uma das universidades do país, pois se encontra consagrada no ordemanento legal da Venezuela e, por constituir a essencia das instituições do ensino superior

Influencia de la actividad laboral temprana sobre la salud pública y el desarrollo social de las niñas y niños de 7 a 12 años trabajadores en la calle de San Salvador en el período de Julio a Noviembre de 1999

Tiene por objetivo analizar la influencia de las condiciones laborales en las que se realiza la actividad laboral sobre la salud física de las niñas y niños trabajadores en la calle, identificar cómo influye el tiempo de la jornada laboral sobre el desarrollo social de las niñas y niños trabajadores en la calle y caracterizar el perfil de morbilidad que con mayor frecuencia presentan los niños y niñas trabajadores en la call

Catálogo de medios audiovisuales para la enseñanza de la Literatura y La Historia de Hispanoamérica a través de las Artes escénicas, la música y la cinematografía: El Río de la Plata, Argentina, Uruguay y Paraguay (1850-1900)

Depto. de Literaturas Hispánicas y BibliografíaFac. de FilologíaFALSEsubmitte