Orden de 20 de mayo de 1949 por la que se convocan los Concursos Nacionales de Arquitectura y Escultura, Pintura, Grabado, Grabado en Hueco, Literatura y Música, correspondientes al año actual.

Se establecen las bases generales de la convocatoria de los Concursos Nacionales de Arquitectura y Escultura, Pintura, Grabado, Grabado en Hueco, Literatura y Música, correspondiente al año 1949. De cada una de las modalidades se informa del tema al que deberán responder cada una de las obras presentadas, los concurrentes y la cuantía a la que ascenderán los diversos premios.

Orden de 26 de noviembre de 1949 por la que se resuelve el Concurso Nacional de Grabado correspondiente al año actual.

Se transcribe la resolución del Concurso Nacional de Grabado de 1949. Se adjudica el primer premio a la obra titulada 'Diana y Acteón' cuyo autor es D. Teodoro Miciano y cuya cuantía asciende a 6000 pesetas. El accésit se le concede a 'Retrato' cuyo autor es Alberto Ziegler.

La actualidad española en el arte : los concursos nacionales de pintura, grabado y arquitectura.

Se ofrece un comentario crítico sobre los concursos nacionales de pintura, grabado y arquitectura convocados en España durante 1949. Se comentan las obras presentadas a cada una de las modalidades destacando las de más valor artístico. La crítica al respecto se hace comparativamente a la obra de los grandes artistas consagrados nacionales y el desequilibrio cualitativo entre unas y otras obras. También se ofrece una glosa sobre el vigésimo tercero Salón de Otoño organizado por la Asociación de Pintores y Escultores, celebrado en los salones del Museo Nacional de Arte Moderno y los de la Sociedad Española de Amigos del Arte. En este certamen se daban a conocer nuevas figuras de la pintura y la escultura. En esta edición se expusieron 229 cuadros, 26 esculturas, 23 dibujos y grabados y seis obras de arte decorativo.

Orden de 26 de noviembre de 1949 por la que se resuelve el Concurso Nacional de Grabado en hueco correspondiente al año actual.

Por la presente Orden se declara desierto el premio del Concurso Nacional de Grabado en hueco correspondiente al año 1949, al no haber alcanzado la calidad técnica y el mérito artístico ninguna de las obras presentadas.

Entre lo digital y lo impreso : aportaciones de un docente especialista en t??cnicas del grabado para formar en tecnolog??as en construcci??n de productos visuales

Resumen basado en el de la publicaci??n

Nous llenguatges per a nous canals de comunicaci??

Resumen basado en el de la publicaci??n

El Libro objeto como recurso didáctico. El libro objeto y de artista como recurso didáctico en la docencia en el grado en bellas artes. Asignaturas de diseño y grabado

Los libros objeto y libros de artista, son los soportes de expresión como concepto de libro realizados por un artista. Por tanto el libro de artista es el soporte donde se manifiestan las sensaciones, proyectos, o simplemente puede ser un cuaderno de notas donde hacen bocetos, dibujos, apuntes con cualquiera de las técnicas artísticas. Un cuaderno de artista en la pedagogía de Bellas Artes, (un alto porcentaje del alumnado con edades entre 18 a 22 años) generalmente representa el lugar donde el alumno dibuja, hace sus apuntes o estudios para posteriormente ejecutar una obra de mayor calado, que le sirve para desarrollar una disciplina de trabajo diaria y para coger soltura. Son muy interesantes los ejercicios de grafismos con líneas paralelas, verticales, horizontales en ambos sentidos o círculos concéntricos que aportan maestría y destreza que se ven reflejadas por ejemplo en el sombreado de dibujos en trabajos de mayor formato

Amb M. Antònia Canals al Nepal de Viki Sherpa

Relació del viatge fet per la Maria Antònia Canals a Nepal amb motiu de l’acte de celebració de la signatura del conveni de col·laboració entre la Universitat de Tribhuvan a Katmandu i la Universitat de Vic per crear el centre de formació del professorat d’infantil i de primària M. Antònia Canals

Characterization of Actinomyces isolates from infected root canals of teeth: description of Actinomyces radicidentis sp. nov.

Two strains of a previously undescribed Actinomyces-like bacterium were recovered in pure culture from infected root canals of teeth. Analysis by biochemical testing and polyacrylamide gel electrophoresis of whole-cell proteins indicated that the strains closely resembled each other phenotypically but were distinct from previously described Actinomyces and Arcanobacterium species. Comparative 16S rRNA gene-sequencing studies showed the bacterium to be a hitherto unknown subline within a group of Actinomyces species which includes Actinomyces bovis, the type species of the genus. Based on phylogenetic and phenotypic evidence, we propose that the unknown bacterium isolated from human clinical specimens be classified as Actinomyces radicidentis sp. nov. The type strain of Actinomyces radicidentis is CCUG 36733.

Microbial culture and checkerboard DNA-DNA hybridization assessment of bacteria in root canals of primary teeth pre- and post-endodontic therapy with a calcium hydroxide/chlorhexidine paste

Aim. To investigate the root canal microbiota of primary teeth with apical periodontitis and the in vivo antimicrobial effects of a calcium hydroxide/chlorhexidine paste used as root canal dressing. Design. Baseline samples were collected from 30 root canals of primary teeth with apical periodontitis. Then, the root canals were filled with a calcium hydroxide paste containing 1% chlorhexidine for 14 days and the second bacteriologic samples were taken prior to root canal filling. Samples were submitted to microbiologic culture procedure to detect root canal bacteria and processed for checkerboard DNA-DNA hybridization. Results. Baseline microbial culture revealed high prevalence and cfu number of anaerobic, black-pigmented bacteroides, Streptococcus, and aerobic microorganisms. Following root canal dressing, the overall number of cfu was dramatically diminished compared to initial contamination (P < 0.05), although prevalence did not change (P > 0.05). Of 35 probes used for checkerboard DNA-DNA hybridization, 31 (88.57%) were present at baseline, and following root canal dressing, the number of positive probes reduced to 13 (37.14%). Similarly, the number of bacterial cells diminished folowing application of calcium hydroxide/chlorhexidine root canal dressing (P = 0.006). Conclusion. Apical periodontitis is caused by a polymicrobial infection, and a calcium hydroxide/chlorhexidine paste is effective in reducing the number of bacteria inside root canals when applied as a root canal dressing.

Er : YAG laser: Antimicrobial effects in the root canals of dogs' teeth with pulp necrosis and chronic periapical lesions

Objective: Our goal in this study was to evaluate the antimicrobial effect of Er:YAG laser applied after biomechanical preparation of the root canals of dog's teeth with apical periodontitis. Background Data: Various in vitro studies have reported effective bacterial reduction in infected root canals using Er:YAG laser. However, there is no in vivo research to support these results. Methods: Forty root canals of dogs' premolar teeth with pulp necrosis and chronic periapical lesions were used. An initial microbiological sample was taken, and after biomechanical preparation was carried out, a second microbiological sample was taken. The teeth were divided into two groups: Group I-biomechanical preparation was taken of root canals without Er:YAG laser application; Group II-biomechanical preparation was taken of root canals with Er:YAG laser application using 140-mj input, 63-mJ output/15 Hz. After coronal sealing, the root canals were left empty for 7 days at which time a third microbiological sample was taken. The collected material was removed from the root canal with a #40 K file and placed in transport media. It was serially diluted and seeded on culture dishes selective for anaerobes, aerobes, and total streptococci. Colony-forming units per milliliter (CFU/mL) were counted. Results: Groups I and II showed an increase of CFU/mL for all microorganisms 7 days after treatment, being statistically significant for anaerobes in Group I and for anaerobes and total streptococci in Group II. When comparing CFU/mL of Groups I and II, there was a statistically significant increase after 7 d for total streptococci in Group II. Conclusion: Er:YAG laser applied after biomechanical preparation did not reduce microorganisms in the root canal system.

Percentage of gutta-percha in mesial canals of mandibular molars obturated by lateral compaction or single cone techniques

The aim of this study was to compare the percentage of gutta-percha (PGP) in mesial root canals of mandibular molars obturated with LC (Lateral Compaction) or SC (Single Cone) ProTaper Universal System techniques at different levels of the root. Mesial root canals of 20 human permanent molars with similar anatomical characteristics were instrumented using the ProTaper Universal rotary system technique until the F2 instrument, with 20 canals filled by SC ProTaper Universal technique and 20 canals by the LC technique. The mesial roots were sectioned transversely to 3, 5, and 7 mm from the root apex. Digital images of specimens were obtained at MIC-D digital microscope in increases of 30 to 35X. The gutta-percha area was measured using ImageTool software. Data were analyzed using two-way ANOVA and Bonferroni test (a = 0.05). The SC technique provided greater PGP than the LC technique in the apical third (3 mm) (P < 0.001). In the other thirds (5 and 7 mm) there was no statistical difference between the two techniques regarding the PGP (P > 0.05). There was no statistically significant difference between thirds of the root canal for both techniques (P > 0.05). It was concluded that SC technique provided greater PGP than the LC technique in the apical third of mesial root canals of mandibular molars. There was no difference between the two techniques regarding the PGP in the cervical and middle thirds. Microsc. Res. Tech. 75:12291232, 2012. (C) 2012 Wiley Periodicals, Inc.

Bacterial leakage evaluation of root canals filled with different endodontic sealers

Objective. The objective of this study was to evaluate the sealing ability of AH Plus, Epiphany, Acroseal, Endofill, and Polifil after active lateral condensation technique, by using a bacterial test, during 64 days.Study design. One hundred bovine incisors were cleaned and shaped; then they were filled with the endodontic sealers and adapted into a microcentrifuge tube. The setup root/microcentrifuge tube was added to glass flasks containing Brain Heart Infusion broth. A culture of Enterococcus faecalis was inserted into the upper chamber of each assembly. Daily leakage was evaluated through the broth turbidity.Results. The results were submitted to statistical analysis (Kaplan-Meier method, Kruskal-Wallis and Dunn tests).Conclusions. AH Plus and Endofill had the worst sealing ability when compared with Polifil, which showed the least leakage. Acroseal and Epiphany showed a tendency toward having an intermediate behavior; however, there was no significant difference among Acroseal, Epiphany, and the other sealers. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2009; 108: e56-e60)

Bacterial leakage in root canals filled with conventional and MTA-based sealers

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Morphometrical analysis of cleaning capacity of a hybrid instrumentation in mesial flattened root canals

The cleaning capacity of hybrid and rotary instrumentation techniques in mesial flattened canals of mandibular first molars was evaluated by morphometrical analysis in this study. Twenty human mandibular first molars were randomly assigned into two groups, according to instrumentation technique, as follows: group 1, instrumentation with ProTaper Starter Kit (Dentsply/Maillefer) rotary system; group 2, manual instrumentation using K files (Dentsply/Maillefer) by crown-down technique in middle and apical thirds, cervical preparation with Gates-Glidden #1 and #2 (Dentsply/Maillefer) burs, and to finalise the preparation, ProTaper F2 and F3 rotary files. Serial transverse cross-sections (5 mu m) of the apical third, stained with hematoxylin and eosin, were analysed at 100 x original magnification. The images were submitted to morphometrical analysis with an integration grid to determine the percentage of root canal area with debris. Statiscal analysis (t-Student, P < 0.05) showed significant difference between the techniques (P < 0.05), although neither completely cleaned the root canal.