O2, la Oberta en abierto : repositorio institucional

Tríptic informatiu sobre la publicació de documents amb accés obert en el repositori institucional de la UOC, O2 (La Oberta en obert). Aquest informa sobre quins documents hi poden publicar els membres de la comunitat UOC, com fer-ho i els serveis de valor afegit per a tots els usuaris (web 2.0, subscripció per RSS o correu electrònic, exportació al gestor bibliogràfic Refworks, etc.) i per a la recerca (lligam amb l'aplicació d'avaluació de la recerca GIR i informació del factor d'impacte de la revista a SCOPUS, IN-RECS/IN-RECJ i MIAR).

O2, l'Oberta en obert : el repositori institucional

Tríptic informatiu sobre la publicació de documents amb accés obert en el repositori institucional de la UOC, O2 (La Oberta en obert). Aquest informa sobre quins documents hi poden publicar els membres de la comunitat UOC, com fer-ho i els serveis de valor afegit per a tots els usuaris (web 2.0, subscripció per RSS o correu electrònic, exportació al gestor bibliogràfic Refworks, etc.) i per a la recerca (lligam amb l'aplicació d'avaluació de la recerca GIR i informació del factor d'impacte de la revista a SCOPUS, IN-RECS/IN-RECJ i MIAR).

Survival of zirconia- and metal-supported fixed dental prostheses: a systematic review

Purpose: The aim of this review was to systematically evaluate and compare the frequency of veneer chipping and core fracture of zirconia fixed dental prostheses (FOPS) and porcelain-fused-to-metal (PFM) FDPs and determine possible influencing factors. Materials and Methods: The SCOPUS database and International Association of Dental Research abstracts were searched for clinical studies involving zirconia and PFM FDPs. Furthermore, studies that were integrated into systematic reviews on PFM FDPs were also evaluated. The principle investigators of any clinical studies on zirconia FDPs were contacted to provide additional information. Based on the available information for each FOP, a data file was constructed. Veneer chipping was divided into three grades (grade 1 = polishing, grade 2 = repair, grade 3 = replacement). To assess the frequency of veneer chipping and possible influencing factors, a piecewise exponential model was used to adjust for a study effect. Results: None of the studies on PFM FDPs (reviews and additional searching) sufficiently satisfied the criteria of this review to be included. Thirteen clinical studies on zirconia FDPs and two studies that investigated both zirconia and PFM FDPs were identified. These studies involved 664 zirconia and 134 PFM FDPs at baseline. Follow-up data were available for 595 zirconia and 127 PFM FDPs. The mean observation period was approximately 3 years for both groups. The frequency of core fracture was less than 1% in the zirconia group and 0% in the PFM group. When all studies were included, 142 veneer chippings were recorded for zirconia FDPs (24%) and 43 for PFM FDPs (34%). However, the studies differed extensively with regard to veneer chipping of zirconia: 85% of all chippings occurred in 4 studies, and 43% of all chippings included zirconia FDPs. If only studies that evaluated both types of core materials were included, the frequency of chipping was 54% for the zirconia-supported FDPs and 34% for PFM FDPs. When adjusting the survival rate for the study effect, the difference between zirconia and PFM FDPs was statistically significant for all grades of chippings (P = .001), as well as for chipping grade 3 (P = .02). If all grades of veneer chippings were taken into account, the survival of PFM FDPs was 97%, while the survival rate of the zirconia FDPs was 90% after 3 years for a typical study. For both PFM and zirconia FDPs, the frequency of grades 1 and 2 veneer chippings was considerably higher than grade 3. Veneer chipping was significantly less frequent in pressed materials than in hand-layered materials, both for zirconia and PFM FDPs (P = .04). Conclusions: Since the frequency of veneer chipping was significantly higher in the zirconia FDPs than PFM FDPs, and as refined processing procedures have started to yield better results in the laboratory, new clinical studies with these new procedures must confirm whether the frequency of veneer chipping can be reduced to the level of PFM. Int J Prosthodont 2010;23:493-502

Estudi bibliomètric primer trimestre 2014. ESAB

El present document recull les publicacions indexades a la base de dades Scopus durant el període comprès entre el mesos de gener a abril de l’any 2014, escrits per autors pertanyents a l’ESAB. Es presenten les dades recollides segons la font on s’ha publicat, els autors que han publicat, i el tipus de document publicat. S’hi inclou un annex amb la llista de totes les referències bibliogràfiques publicades.

Estudi bibliomètric primer trimestre 2014. EETAC

El present document recull les publicacions indexades a la base de dades Scopus durant el període comprès entre el mesos de gener a abril de l’any 2014, escrits per autors pertanyents a l’EETAC. Es presenten les dades recollides segons la font on s’ha publicat, els autors que han publicat, i el tipus de document publicat. S’hi inclou un annex amb la llista de totes les referències bibliogràfiques publicades.

Bond strength tests of dental adhesive systems and their correlation with clinical results : a meta-analysis

OBJECTIVE: To evaluate the variability of bond strength test results of adhesive systems (AS) and to correlate the results with clinical parameters of clinical studies investigating cervical restorations. MATERIALS AND METHODS: Regarding the clinical studies, the internal database which had previously been used for a meta-analysis on cervical restorations was updated with clinical studies published between 2008 and 2012 by searching the PubMed and SCOPUS databases. PubMed and the International Association for Dental Research abstracts online were searched for laboratory studies on microtensile, macrotensile and macroshear bond strength tests. The inclusion criteria were (1) dentin, (2) testing of at least four adhesive systems, (3) same diameter of composite and (4) 24h of water storage prior to testing. The clinical outcome variables were retention loss, marginal discoloration, detectable margins, and a clinical index comprising the three parameters by weighing them. Linear mixed models which included a random study effect were calculated for both, the laboratory and the clinical studies. The variability was assessed by calculating a ratio of variances, dividing the variance among the estimated bonding effects obtained in the linear mixed models by the sum of all variance components estimated in these models. RESULTS: Thirty-two laboratory studies fulfilled the inclusion criteria comprising 183 experiments. Of those, 86 used the microtensile test evaluating 22 adhesive systems (AS). Twenty-seven used the macrotensile test with 17 AS, and 70 used the macroshear test with 24 AS. For 28 AS the results from clinical studies were available. Microtensile and macrotensile (Spearman rho=0.66, p=0.007) were moderately correlated and also microtensile and macroshear (Spearman rho=0.51, p=0.03) but not macroshear and macrotensile (Spearman rho=0.34, p=0.22). The effect of the adhesive system was significant for microtensile and macroshear (p<0.001) but not for macrotensile. The effect of the adhesive system could explain 36% of the variability of the microtensile test, 27% of the macrotensile and 33% of the macroshear test. For the clinical trials, about 49% of the variability of retained restorations could be explained by the adhesive system. With respect to the correlation between bond strength tests and clinical parameters, only a moderate correlation between micro- and macrotensile test results and marginal discoloration was demonstrated. However, no correlation between these tests and a retention loss or marginal integrity was shown. The correlation improved when more studies were included compared to assessing only one study. SIGNIFICANCE: The high variability of bond strength test results highlights the need to establish individual acceptance levels for a given test institute. The weak correlation of bond-strength test results with clinical parameters leads to the conclusion that one should not rely solely on bond strength tests to predict the clinical performance of an adhesive system but one should conduct other laboratory tests like tests on the marginal adaptation of fillings in extracted teeth and the retention loss of restorations in non-retentive cavities after artificial aging.

Eficacia de la terapia y/o los ejercicios terapéuticos en pacientes con trastorno temporomandibular. Alteración cóndilo-discal posterior.

Pregunta: ¿Qué tipo de terapia manual y/o ejercicios terapéuticos son más eficaces en pacientes con trastorno temporomandibular? Objetivo: Evaluar y comparar la eficacia de la terapia manual y/o los ejercicios terapéuticos en pacientes con trastorno temporomandibular. Metodología: la presente revisión bibliográfica se centra en bases de datos Medline, Scopus, PEDro y Google Scholar. Los artículos obtenidos fueron publicados entre los años 2004 y 2014. Se incluyen un total de 12 ensayos clínicos aleatorios. La literatura consta de pacientes con trastorno temporomandibular que hayan sido intervenidos con técnicas de terapia manual y/o ejercicios terapéuticos aplicados por un fisioterapeuta. Resultados: fueron seleccionados 10 estudios de alta evidencia científica para demostrar que la terapia manual combinada con ejercicio terapéutico disminuye el dolor, aumenta la abertura de la boca y corrige la anteversión de la cabeza. Conclusiones: la terapia manual combinada con ejercicios terapéuticos es efectiva para disminuir los síntomas en pacientes con trastornos temporomandibulares.

Clinical effectiveness of direct anterior restorations-A meta-analysis.

OBJECTIVES: This is the first meta-analysis on the efficacy of composite resin restorations in anterior teeth. The objective of the present meta-analysis was to verify whether specific material classes, tooth conditioning methods and operational procedures influence the result for Class III and Class IV restorations. MATERIAL AND METHODS: The database SCOPUS and PubMed were searched for clinical trials on anterior resin composites without restricting the search to the year of publication. The inclusion criteria were: (1) prospective clinical trial with at least 2 years of observation; (2) minimal number of restorations at last recall=20; (3) report on drop-out rate; (4) report of operative technique and materials used in the trial, and (5) utilization of Ryge or modified Ryge evaluation criteria. For the statistical analysis, a linear mixed model was used with random effects to account for the heterogeneity between the studies. p-Values smaller than 0.05 were considered to be significant. RESULTS: Of the 84 clinical trials, 21 studies met the inclusion criteria, 14 of them for Class III restorations, 6 for Class IV restorations and 1 for closure of diastemata; the latter was included in the Class IV group. Twelve of the 21 studies started before 1991 and 18 before 2001. The estimated median overall success rate (without replacement) after 10 years for Class III composite resin restorations was 95% and for Class IV restorations 90%. The main reason for the replacement of Class IV restorations was bulk fractures, which occurred significantly more frequently with microfilled composites than with hybrid and macrofilled composites. Caries adjacent to restorations was infrequent in most studies and accounted only for about 2.5% of all replaced restorations after 10 years irrespective of the cavity class. Class III restorations with glass ionomer derivates suffered significantly more loss of anatomical form than did fillings with other types of material. When the enamel was acid-etched and no bonding agent was applied, significantly more restorations showed marginal staining and detectable margins compared to enamel etching with enamel bonding or the total etch technique; fillings with self-etching systems were in between of these two outcome variables. Bevelling of the enamel was associated with a significantly reduced deterioration of the anatomical form compared to no bevelling but not with less marginal staining or less detectable margins. The type of isolation (absolute/relative) had a statistically significant influence on marginal caries which, however, might be a random finding.

La publicación de artículos en las áreas de ciencias sociales y humanidades analizada a partir de los sistemas de información sobre investigación: el caso de las Universidades de Barcelona y Girona

Los sistemas de información sobre investigación y actividad científica de las universidades permiten complementar los datos que ofrecen las bases de datos multidisciplinares internacionales tales como WoS o Scopus, especialmente en disciplinas cuya cobertura no es suficientemente exhaustiva. En el presente estudio se analizan algunas características sobre los artículos y revistas publicados en las áreas de Ciencias Sociales y Humanidades por profesores e investigadores de dos universidades catalanas. Los datos han sido extraídos a partir de bases de datos que permiten el acceso libre a los registros de la producción de ambas instituciones académicas. Se concluye la importancia del acceso abierto a este tipo de registros además de la existencia de diferencias entre las áreas de conocimiento en aspectos tales como calidad, nivel de colaboración, porcentaje de divulgación, idioma de publicación, aunque existe una tendencia general a un mayor uso relativo de la lengua inglesa.

Meta-analysis of the influence of bonding parameters on the clinical outcome of tooth-colored cervical restorations

PURPOSE: To meta-analyze the literature on the clinical performance of Class V restorations to assess the factors that influence retention, marginal integrity, and marginal discoloration of cervical lesions restored with composite resins, glass-ionomer-cement-based materials [glass-ionomer cement (GIC) and resin-modified glass ionomers (RMGICs)], and polyacid-modified resin composites (PMRC). MATERIALS AND METHODS: The English literature was searched (MEDLINE and SCOPUS) for prospective clinical trials on cervical restorations with an observation period of at least 18 months. The studies had to report about retention, marginal discoloration, marginal integrity, and marginal caries and include a description of the operative technique (beveling of enamel, roughening of dentin, type of isolation). Eighty-one studies involving 185 experiments for 47 adhesives matched the inclusion criteria. The statistical analysis was carried out by using the following linear mixed model: log (-log (Y /100)) = β + α log(T ) + error with β = log(λ), where β is a summary measure of the non-linear deterioration occurring in each experiment, including a random study effect. RESULTS: On average, 12.3% of the cervical restorations were lost, 27.9% exhibited marginal discoloration, and 34.6% exhibited deterioration of marginal integrity after 5 years. The calculation of the clinical index was 17.4% of failures after 5 years and 32.3% after 8 years. A higher variability was found for retention loss and marginal discoloration. Hardly any secondary caries lesions were detected, even in the experiments with a follow-up time longer than 8 years. Restorations placed using rubber-dam in teeth whose dentin was roughened showed a statistically significantly higher retention rate than those placed in teeth with unprepared dentin or without rubber-dam (p < 0.05). However, enamel beveling had no influence on any of the examined variables. Significant differences were found between pairs of adhesive systems and also between pairs of classes of adhesive systems. One-step self-etching had a significantly worse clinically index than two-step self-etching and three-step etch-and-rinse (p = 0.026 and p = 0.002, respectively). CONCLUSION: The clinical performance is significantly influenced by the type of adhesive system and/or the adhesive class to which the system belongs. Whether the dentin/enamel is roughened or not and whether rubberdam isolation is used or not also significantly influenced the clinical performance. Composite resin restorations placed with two-step self-etching and three-step etch-and-rinse adhesive systems should be preferred over onestep self-etching adhesive systems, GIC-based materials, and PMRCs.

Estudi bibliomètric segon trimestre 2014. ESAB

El present document recull les publicacions indexades a la base de dades Scopus durant el període comprès entre el mesos de maig a setembre de l’any 2014, escrits per autors pertanyents a l’ESAB. Es presenten les dades recollides segons la font on s’ha publicat, els autors que han publicat, i el tipus de document publicat. S’hi inclou un annex amb la llista de totes les referències bibliogràfiques publicades.

Estudi bibliomètric segon trimestre 2014. EETAC

El present document recull les publicacions indexades a la base de dades Scopus durant el període comprès entre el mesos de maig a setembre de l’any 2014, escrits per autors pertanyents a l’EETAC. Es presenten les dades recollides segons la font on s’ha publicat, els autors que han publicat, i el tipus de document publicat. S’hi inclou un annex amb la llista de totes les referències bibliogràfiques publicades.

La síndrome del dolor miofascial i la punció seca.

Introducció. La punció seca (PS) és una tècnica invasiva per al tractament de la síndrome del dolor miofascial (SDM), un trastorn no inflamatori que presenta un conjunt de símptomes originats per un punt gallet miofascial (PGM). Objectius. Comprovar si la punció seca és efectiva per al tractament de la SDM i dels PGM i si acompanyada d’altres tècniques podria augmentar la seva efectivitat. Material i mètodes. Es realitza una revisió bibliogràfica d’estudis experimentals (queden excloses altres revisions bibliogràfiques) a les bases de dades següents: Medline, Cochrane, PEDro, Enfispo, Scopus i Dialnet. La recerca es limita a treballs experimentals amb humans publicats en els últims 10 anys que utilitzin la punció seca com a tractament de la SDM i dels PGM. En total es revisen 4 articles. Resultats i discussió. En dos dels estudis revisats s’afirma que la punció seca juntament amb un programa d’exercicis actius i d’estiraments de la musculatura és, almenys, igual d’efectiva que la injecció d’anestèsic local i l’administració de flurbiprofen oral (AINE) en el tractament de la SDM (18,19). També s’afirma que la PS és més efectiva que el placebo (21). I com a resultat del quart article revisat s’obté que la PS i la manipulació de colze no són més efectius que el placebo en la SDM (20). Conclusions. Després de l’anàlisi i la discussió dels resultats obtinguts es conclou que falten més estudis i de més qualitat per tal d’aportar evidència a la PS en el tractament de la SDM i dels PGM.

Efecto de las diferentes duraciones de tratamiento en la terapia de movimiento inducido por restricción: Revisión bibliográfica.

Pregunta de revisión: ¿Son más eficientes las diferentes duraciones del tratamiento y de frecuencia de la terapia de movimiento inducido por restricción (TIMR) en los resultados de la actividad y de participación en los pacientes con accidente cerebrovascular crónico? Objetivo: Examinar el efecto de diferentes duraciones de tratamiento de la TIMR y la terapia de movimiento inducido por restricción modificada (TIMRm) sobre la actividad y la participación de los pacientes con accidente cerebrovascular crónico. Metodología: Se realizó una búsqueda bibliográfica en MEDLINE, CINAHL, OTSeeker, Scopus, Cochrane plus, La Biblioteca Cohrane y por búsqueda manual. Los criterios de inclusión fueron: ensayos controlados aleatorios (ECA) o cuasi-ECA con participantes de más de 18 años, accidente cerebrovascular crónico y TIMR o TIMRm en comparación con otras intervenciones. Resultados: La búsqueda final resultó en 10 ECA publicados entre 2003 y 2013. La calidad de los estudios varió en la puntuación (6-9) según la escala de PEDro. La práctica de la TIMR de 50-60 horas durante 2 semanas produjo una mejor movilidad, con evidencia moderada-alta, en comparación al tratamiento control. La TIMR durante 30 horas en tres semanas, 90 horas durante tres semanas y 15-30 horas durante 10 semanas mejora la movilidad de la extremidad superior afectada. Conclusión: La TIMR durante 30 horas en tres semanas demostró ser eficaz y eficiente en la movilidad de la mano afectada, pero se necesitan más estudios para conocer los protocolos de tratamiento óptimas para la TIMR.

Solutions in radiology services management: a literature review

AbstractObjective:The present study was aimed at reviewing the literature to identify solutions for problems observed in radiology services.Materials and Methods:Basic, qualitative, exploratory literature review at Scopus and SciELO databases, utilizing the Mendeley and Illustrator CC Adobe softwares.Results:In the databases, 565 papers – 120 out of them, pdf free – were identified. Problems observed in the radiology sector are related to procedures scheduling, humanization, lack of training, poor knowledge and use of management techniques, and interaction with users. The design management provides the services with interesting solutions such as Benchmarking, CRM, Lean Approach, ServiceBlueprinting, continued education, among others.Conclusion:Literature review is an important tool to identify problems and respective solutions. However, considering the small number of studies approaching management of radiology services, this is a great field of research for the development of deeper studies.