Dentistry Students' Knowledge of Pediatric Patients Who Suffered Violence: A Systematic Review

ABSTRACT Objective: To review the literature unprecedentedly to identify the dentistry students' knowledge of pediatric patients who suffered violence. Material and Methods: A systematic review was conducted using PubMed, Web of Science, LILACS, SciELO, Google Scholar, and OpenGrey electronic databases up to November 2021. The "Grey Literature" was verified through Google Scholar and Open Grey searches to avoid any selection bias. There was no restriction on the date of publication or language. Results: The systematic search yielded 2.756 studies in the first selection phase, but only twenty-two articles were included. All selected articles were published between 1998 and 2021 and used a questionnaire to evaluate the dentistry students' knowledge regarding child maltreatment cases. Brazil was the country that had the most studies included (10 articles). Despite the majority of the students presenting insufficient knowledge about child maltreatment, evidence from this research showed that every form of approach by professionals toward child maltreatment should be considered important. Conclusion: Therefore, there are deficiencies regarding the teaching-learning methodology, reinforcing the need for improvements in Dentistry undergraduate curricula.

Are Premature Birth and Low Birth Weight Associated with Delay on the Eruption of Deciduous Teeth? A Systematic Review and Meta-analysis

ABSTRACT Objective: To investigate whether children with premature birth (PB) and/or with low birth weight (LBW) have different tooth eruption patterns than those born at term or with normal weight. Material and Methods: Searches were performed in the PubMed, Cochrane Library, Sc1opus, Web of Science, LILACS, and BBO databases as well as the grey literature. Three independent reviewers were involved in study selection, data extraction, and bias assessment. The risk of bias was assessed using the Modified Newcastle-Ottawa Scale. Meta-analysis was conducted to compute the mean difference (MD) in mean chronological or adjusted age at the eruption of the first deciduous tooth between preterm children and those born at full term. The GRADE approach was used. Results: Among a total of 316 articles identified, 21 were eligible for inclusion and three were included in the meta-analysis. PB was associated with the delay in the first tooth deciduous eruption when chronological age was considered (MD: 1.36; 95%CI: 1.02-1.69) but not when considering adjusted age (MD: -0.30; 95%CI: -0.67-0.07). The evidence was graded as having very low quality. Conclusion: Based on a low certainty of evidence the PB is associated with the delayed eruption of the first deciduous tooth when considering chronological age but not when adjusted age is considered.

Can Hemophilia Impact on the Oral Health Conditions of Children and Adolescents? A Systematic Review and Metanalysis

Abstract Objective: To analyze if the oral health conditions in children and adolescents are associated with hemophilia (PROSPERO-42020168192). Material and Methods: The search strategy was performed in PubMed, Scopus, Lilacs/BBO, Web of Science, Cochrane, and Grey literature databases. Two independent researchers assessed the risk of bias in these studies by the Newcastle-Ottawa Scale. For the meta-analysis, the clinical conditions data were extracted as numerical variables according to their indexes, such as dental caries experience (dmft/DMFT), gingival condition (Modified Gingival Index - IGM), and oral hygiene (Plaque Index - PI). The quality of the evidence of the meta-analysis was evaluated by the GRADE tool (GRADEproGDT). Results: From a total of 431 studies, 27 were included, and 10 were included in the meta-analysis. The studies presented a moderate risk of bias, ranging from 2 to 7 points. The dental caries experience in primary (-0.62; CI95%: -1.68-0.43) and permanent dentitions (-0.05; CI95%: -0.69-0.59), gingival condition (-0.12; CI95%: -0.27-0.03), and oral hygiene (0.36; CI95%: -0.06-0.77) did not differ between the groups. Conclusion: Based on studies with very weak evidence, there were no differences in the oral health conditions of children and adolescents with and without hemophilia (AU).

Types of randomized clinical trials published in PubMed over 40 years / Tipos de ensayos clínicos con asignación aleatoria publicados en PubMed durante 40 años

Abstract Introduction: there are several variations of randomized clinical trials. Trials can be classi fied by design as parallel, cross-over, factorial, assignment by group, n-of-1, paired, withdrawal, adaptive and pragmatic; and by purpose as superiority, non-inferiority and equivalence. Given this heterogeneity, the Consolidated Standards of Reporting Trials (CONSORT) were introduced in 1996 to provide a guideline for reporting randomized clinical trials. Objective: to describe the publication tendency of the various types of randomized clinical trials over 40 years, with reference to the publication of CONSORT and its extensions. Methods: the PubMed tool was used to search for randomized clinical trials published between 1979 and 2018, classifying them according to the varieties described. Results: a total of 472,114 published articles were found; 90.2% did not report the type of design and 98.2% did not report the purpose. Among the articles that reported the variety of randomized clinical trial, the predominant design was cross-over (5.9%), followed by parallel groups (2.34%); while the most common purpose was superiority (0.84%). After the launch of CONSORT, there was an increased proportion of articles published with the following designs: parallel groups; difference in proportions 1.89 95% CI (1.1-2.7); paired 1.07 95% CI (0.2-1.9); and pragmatic 4.73 95% CI (4.4-5.1); and for the purpose of non-inferiority 5.97 95% CI (5.6-6.3). Discussion: most articles on randomized clinical trials do not mention their type in the title and abstract. The proportion of articles that did, increased slightly after CONSORT was published. (Acta Med Colomb 2021; 46. DOI:https://doi.org/10.36104/amc.2021.1884).

Resumen Introducción: existen múltiples variantes del ensayo clínico aleatorizado; según diseño: grupos paralelos, cruzado, factorial, asignación por grupos, N de 1, pareado, retiro, adaptativo y pragmático; y por propósito: superioridad, no inferioridad y equivalencia. Debido a esta heterogeneidad, en 1996 se introdujo el CONSORT (Consolidated Standards of Reporting Trials) para suministrar una guía para el reporte de los ensayos clínicos aleatorizados. Objetivo: describir la tendencia de publicación de los tipos de ensayos clínicos aleatorizados durante 40 años, en relación con la publicación del CONSORT y sus extensiones. Métodos: se utilizó la herramienta PubMed para realizar una búsqueda de ensayos clínicos aleatorizados publicados entre 1979 y 2018, discriminándolos según las variantes descritas. Resultados: se encontraron 472 114 artículos publicados, el 90.2% no reportó tipo de diseño y 98.2% no reportó propósito. Entre los artículos que reportaron la variante de ensayos clínicos aleatorizados, el diseño predominante fue el cruzado (5.9%), seguido por grupos paralelos (2.34%); mientras que el propósito más frecuente fue el de superioridad (0.84%). Hubo un aumento en la proporción de artículos por variante publicados después del lanzamiento del CONSORT para los diseños de: grupos paralelos; diferencia de proporciones 1.89 IC 95% (1.1-2.7); pareado 1.07 IC 95% (0.2-1.9); pragmático 4.73 IC 95% (4.4-5.1); y para el propósito de no inferioridad 5.97 IC 95% (5.6-6.3). Discusión: la mayoría de los artículos sobre ensayos clínicos aleatorizados no mencionan en su título y resumen la variante de estos. La proporción de artículos que sí lo hicieron, aumentó discre tamente después de la publicación del CONSORT. (Acta Med Colomb 2021; 46. DOI:https://doi.org/10.36104/amc.2021.1884).

External Apical Root Resorption and IL-1A, IL-1RN Gene Polymorphisms: A Systematic Review and Meta-Analysis of Prospective Studies

ABSTRACT Objective: To reconnoiter the IL-1A (-889) and IL-1RN (+2018) gene polymorphisms and their association with EARR. Material and Methods: The Science Direct, PubMed and Scopus databases were comprehensively searched by two independent reviewers. In addition, the bibliographies of all relevant publications and textbooks were searched manually. A meta-analysis was performed using data available up to May 9, 2020. Results: A total of 13 and 9 publications were selected for the systematic review and meta-analysis, respectively for both IL-1A and IL-1RN genes. Odds ratio (OR) was used to evaluate the association of the gene polymorphism and the risk of EARR. The risk of EARR was estimated using the overall OR from the published studies. No association was found for IL-1A gene for the risk of EARR. However, the dominant and co-dominant models of IL-1RN gene polymorphism were associated with the risk of EARR. Conclusion: More studies are warranted to determine the relationship between IL-1A and IL-1RN gene polymorphisms and EARR for a clearer understanding of their interactions.

Caracterização dos referenciais das dissertações e teses dos programas mineiros de pós-graduação / Caracterización de las referencias de las disertaciones y tesis de los programas de posgrado de Minas Gerais / Characterization of references in dissertations and theses from the graduate programs in Minas Gerai

Objetivo: Caracterizar os referenciais teórico/metodológico das dissertações/teses com abordagem qualitativa e mista, dos Programas de Pós-graduação Stricto sensu em Enfermagem públicos mineiros. Método: Descritivo, retrospectivo e documental, com acesso às bibliotecas digitais dos Programas. Identificou-se 888 dissertações e 164 teses no período de 1996 a 2019. Dados coletados por instrumento autoral e analisados pela estatística descritiva. Resultados: Das 888 dissertações, 503 (56,64%) delineamento quantitativo, 345 (38,86%) qualitativo e 40 (4,5%) misto/quali-quanti. Das 164 teses, 92(56,10%) delineamento quantitativo, 64 (39,02%) qualitativo e 8 (4,88%) misto/quali-quanti. Referenciais predominantes: Análise temática e de Conteúdo/Bardin/Minayo; Fenomenologia; Estudo de Caso; Teoria das Representações Sociais/Análise Crítica do Discurso; Hermenêutica-Dialética;Análise Compreensiva; Sociologia Compreensiva do Cotidiano, Etnografia, Análise Estrutural Narração e Teoria Fundamentada nos Dados. Conclusão: Esses referenciais contribuem para translação do conhecimento e qualidade do cuidado de Enfermagem(AU)

Objective: To characterize the theoretical/methodological references of theses/ dissertations with qualitative and mixed approach of Postgraduate Programs in Nursing at Federal Universities in Minas Gerais. Method: Descriptive, retrospective and documentary study, carried out by accessing digital libraries of the programs. The sample consisted of 888 dissertations and 164 theses between 1996 and 2019. Data collected by authorial instrument and analyzed by descriptive statistics. Results: Out of the 888 dissertations, 503 (56.64%) quantitative design, 345 (38.86%) qualitative, and 40 (4.5%) mixed/quali-quanti. Out of the 164 theses, 92 (56.10%) quantitative design, 64 (39.02%) qualitative and 8 (4.88%) mixed/quali-quanti. Predominant references: Thematic and Content Analysis/Bardin/Minayo; Phenomenology; Case study; Theory of Social Representations/Critical Discourse Analysis; Hermeneutics-Dialectic; Comprehensive Analysis; Comprehensive Sociology of Everyday Life, Ethnography, Structural Analysis of Narration and Grounded Theory. Conclusion: These references contribute to the translation of knowledge and quality of nursing care.(AU)

Objetivo: Caracterizar los referentes teóricos/metodológicos de las disertaciones/tesis con enfoque cualitativo y mixto, de programas de posgrado Stricto sensu en enfermería, de universidades públicas de Minas Gerais. Método: Descriptivo, retrospectivo y documental, con acceso a las bibliotecas digitales de los programas. Fueron identificadas 888 disertaciones y 164 tesis, desde 1996 hasta 2019. Datos recogidos mediante instrumento autoral y analizados por estadística descriptiva. Resultados: De las 888 disertaciones, 503 (56,64%) presentaron diseño cuantitativo; 345 (38,86%) cualitativo y 40 (4,5%) mixto. De las 164 tesis, 92 (56,10%) con diseño cuantitativo; 64 (39,02%) cualitativo y 8 (4,88%) mixto. Referencias predominantes: Análisis Temático y de Contenido/Bardin/Minayo; Fenomenología; Estudio de caso; Teoría de las Representaciones Sociales/Análisis Crítico del Discurso; Hermenéutica-Dialéctica; Análisis comprensivo; Sociología Comprensiva de lo Cotidiano, Etnografía, Análisis Estructural de la Narración y Teoría Fundamentada en Datos. Conclusión: Estos referentes contribuyen a la traslación del conocimiento y calidad del cuidado de enfermería(AU)

Características de los ensayos clínicos oncológicos presentados al Instituto Nacional de Salud del Perú, 1995-2019 / Characteristics of oncological clinical trials submitted to the Instituto Nacional de Salud del Peru, 1995-2019

RESUMEN A fin de identificar las características de los ensayos clínicos oncológicos presentados ante el Instituto Nacional de Salud del Perú en el periodo 1995-2019, se realizó un estudio observacional descriptivo, evaluando la información contenida en el Registro Peruano de Ensayos Clínicos. Se identificaron 1996 ensayos clínicos de los cuales 470 eran oncológicos (23,5%); el 74,9% de los ensayos clínicos oncológicos fue patrocinado principalmente por la industria farmacéutica, el 61,9% fue de fase III, siendo autorizados el 86,2%. Entre los autorizados, el 55,6% eran productos de investigación de tipo químico, el 35,9% correspondieron a indicación terapéutica para cáncer de mama; el principal diseño fue de grupos paralelos (84,7%), aleatorizados (85,2%), cegados (51,0%), el criterio de valoración principal más empleado fue la tasa de respuesta objetiva (46,7%). Se concluye que los ensayos clínicos oncológicos se han ido incrementando con los años, con frecuencia diversa entre sus características.

ABSTRACT A descriptive observational study was carried out to identify the characteristics of the oncological clinical trials submitted to the Instituto Nacional de Salud del Perú during the period from 1995 to 2019. The information was obtained from the Peruvian Registry of Clinical Trials. We identified 1,996 clinical trials during the studied period, from which 470 were oncological (23.5%); 74.9% of the oncological clinical trials were mainly sponsored by the pharmaceutical industry, 61.9% were phase III and 86.2% were authorized. Regarding those authorized clinical trials, 55.6% were on chemical research products and 35.9% were on therapeutic indication for breast cancer. The most frequent study designs found were: parallel arm (84.7%), randomized (85.2%) and blinded (51.0%); the most frequently used main endpoint was the objective response rate (46.7%). We conclude that the number of oncological clinical trials has been increasing over the years, often with different characteristics.

Características epidemiológicas y clínicas de pacientes pediátricos con parálisis cerebral. Hospital Vicente Corral Moscoso. Cuenca, 2014 - 2015 / Epidemiological and clinical characteristics of pediatric patients with cerebral palsy. Vicente Corral Moscoso Hospital. Cuenca, 2014-2015

Objetivo: determinar las características epidemiológicas y clínicas de pacientes pediátricos con parálisis cerebral en el Hospital Vicente Corral Moscoso, Cuenca. 2014 - 2015. Metodología: estudio descriptivo de corte transversal, realizado en niños menores de 16 años con parálisis cerebral. Las variables de estudio, que se tomaron de las historias clínicas, fueron: características prenatales, natales y postnatales, condición socioeconómica, funcionalidad familiar, clínica de la parálisis cerebral (PC), comorbilidad. Se realizó análisis descriptivo. Resultados: se encontró 72 pacientes con edad media de 6.2 años (±4 DS), la edad media de diagnóstico fue a los 8 meses (±10.8 DS), el 80.6% presentó epilepsia, el 53.9% en TAC tuvo atrofia cerebral, en el 43.1% la causa de ingreso fue infección respiratoria. De los antecedentes prenatales y neonatales, el 54.2% fue ingresado en la unidad de neonatología, el 38.9% recibió reanimación, el 6.9% tuvo neuroinfección. El 42.1% de las familias de los niños tuvo condición socioeconómica media baja.Conclusiones: el perfil epidemiológico de los niños con PC del estudio, que no difiere de los resultados de otros estudios, orientan a la toma de decisiones en la conformación de equipos de atención en PC el Hospital (AU);

Objective: to determine the epidemiological and clinical characteristics of pediatric patients with cerebral palsy at the Vicente Corral Moscoso Hospital, Cuenca. 2015Methodology: it is a descriptive, cross-sectional study, performed in patients less than 16 years old with cerebral palsy. The study variables, which were taken from the medical records, were: prenatal, natal and postnatal characteristics, socioeconomic status, family functionality, symptoms of cerebral palsy (CP), comorbidity. A descriptive analysis was carried out.Results: 72 patients were found with a mean age of 6.2 years (± 4 SD), the mean age of diagnosis was 8 months (± 10.8 SD), 80.6% had epilepsy, 53.9% in CT had brain atrophy, and in 43.1% the cause of admission was respiratory infection. Of the prenatal and neonatal antecedents, 54.2% were admitted to the neonatology unit, 38.9% received resuscitation, and 6.9% had neuro-infection. The 42.1% of the children's families had low-medium socioeconomic status.Conclusions: The epidemiological profile of children with CP in the study, which does not differ from the results of other studies, guide decision-making in the formation of CP care teams in the Hospital (AU);

Estudos socioculturais: um olhar para os grupos de pesquisa do brasil / Sociocultural studies: a glance towards brazilian research groups

o objetivo do estudo foi identificar e caracterizar os grupos de pesquisa em estudos socioculturais cadastrados no diretório dos grupos de pesquisa do brasil (dgpb). Trata-se de uma pesquisa documental a partir de dados disponíveis no dgpb e na plataforma lattes. Foram coletadas informações sobre: localização, instituição de ensino superior, recursos humanos, linhas de pesquisa, líderes e o ano de formação dos grupos. Os dados foram armazenados no programa microsoft excel e para a análise, utilizouse estatística descritiva. Identificaram-se 24 grupos de pesquisa em estudos socioculturais cadastrados no dgpb, sendo 21 vinculados a instituições federais ou estaduais e três a instituições privadas. Os grupos estão localizados em todas as regiões do país, majoritariamente no sudeste (n=11), sul (n=5) e nordeste (n=5). No item "recursos humanos", foram encontrados 675 integrantes: 215 pesquisadores, 252 estudantes, sete técnicos, seis estrangeiros e 195 egressos. Estes grupos apresentam de uma a oito linhas de pesquisa, sendo que a maioria se constitui por até duas linhas de pesquisa (n=9), enquanto outros grupos oscilam de três a quatro linhas de pesquisa (n=7) e de cinco a seis linhas de pesquisa (n=7). Cada grupo é coordenado por um líder (n=11) ou dois líderes (n=13), dos quais 34 são doutores e dois são mestres. Desde a fundação do primeiro grupo, foram publicados 2.161 trabalhos científicos, havendo prevalência de artigos científicos. Os grupos localizados foram cadastrados no dgpb a partir do ano de 1996. Contudo, foi a partir da década de 2000 que se intensificou a criação dos grupos de pesquisa na área, sendo o último grupo cadastrado no dgpb no ano de 2018. Os grupos de pesquisa, situados em distintas áreas do conhecimento, com predomínio da educação física (n=9), se circunscrevem como imperativos para a construção e a consolidação do campo dos estudos socioculturais no brasil...(AU)

the main objective was to identify and characterize research groups in sociocultural studies registered in the brazilian research groups directory (dgpb). This is a documentary research based on data available in the dgpb and the lattes platform. Information was collected on: location, higher education institution, human resources, research line, group leaders and year of group formation. The data were stored in microsoft excel and the analysis was made by descriptive statistics. Twenty-four research groups in sociocultural studies registered in the dgpb (21 linked to federal or state institutions and three to private institutions) were identified. The groups are located in all regions of the country, mainly in the southeast (n=11), south (n=5) and northeast (n=5). In the item "human resources", a total of 675 members were found: 215 researchers, 252 students, seven technicians, six foreigners and 195 graduates. These groups have one to eight lines of research, the majority of which consists of up to two lines of research (n = 9), while other groups range from three to four lines of research (n = 7) and five to six lines of research (n = 7). Each group is coordinated by a leader (n = 11) or two leaders (n = 13), of whom 34 are doctors and two are masters. Since the foundation of the first group, 2,161 scientific papers have been published, with scientific papers being prevalent. The groups located were registered in the dgpb from 1996. However, it was from the 2000s that the creation of research groups in the area was intensified, the last group being registered in the dgpb in the year 2018. The research groups, situated in different areas of knowledge, mainly physical education (n=9), are circumscribed as imperatives for the construction and consolidation of the field of sociocultural studies in brazil...(AU)

Non-inferiority clinical trials: importance and applications in health sciences

Abstract Non-inferiority randomized clinical trials are indicated when it is intended to prove that an experimental group is not inferior to a control group by more than a margin of non-inferiority. However, this type of study differs from traditional randomized clinical trials (superiority studies) because they have particularities that impact on the formulation of hypothesis to be tested, experimental design (non-inferiority margin determination, adapted sample size calculation, sensitivity of the study and data final analysis) and also on the presentation of data when writing the manuscript. Therefore, this article aims to present and discuss the particularities of non-inferiority clinical studies, since these requirements are fundamental to guarantee the validity of the conclusions of this type of study.

Efficacy of Lasers Treatment of Exposed Pulps to Stimulate Healing: A Systematic Review and Meta-Analysis

Abstract Objective: The present systematic review and meta-analysis aimed at evaluating the efficacy of laser's treatment of exposed pulps to stimulate healing. Material and Methods: MEDLINE, PubMed, Cochrane Library, Embase, ISI, Google Scholar have been searched as the electronic databases for performing systematic literature between 2005 to 2019. Searches were performed with MESH terms. The quality of the studies included was assessed using the Critical Appraisal Skills Program checklist. For Data extraction, two reviewers blind and independently extracted data from the abstract and full text of the studies included. Moreover, the fixed-effect model's odds ratio for a 95% confidence interval (CI) was calculated. Random effects were used to deal with potential heterogeneity, and I2 showed heterogeneity. The meta-analysis and forest plots have been evaluated using the Comprehensive Meta-Analysis Stata. Results: Five studies (3 RCTs and 2 animal studies) were included in this study. The Odds Ratio was 1.90 (95% CI 1.39-2.42; p=0.00); there was a statistically significant difference between the laser and the control groups (p=0.00). Conclusion: The success rate of laser treatment for exposed pulps is higher than mineral trioxide aggregate, resin, calcium hydroxide and resin-modified glass-ionomer cement. The exact mechanism of this effect has not yet been determined; further research on lasers' impact on exposed pulps treatment is required.

Are Behavior Rating Scales Able to Identify Behavioral Changes in Preschool Children Undergoing a Dental Intervention? A Systematic Review

Abstract Objective: To evaluate the scientific evidence concerning the behavior rating scales efficiency to identify behavioral changes in preschool children undergoing dental treatment, through a systematic review. Material and Methods: MEDLINE/PubMed, Scopus, Cochrane Library, Web of Science, BVS databases and grey literature were searched. Also, a hand search of the included studies reference lists was conducted. Studies that evaluated healthy preschoolers' behavior before and after invasive dental treatments to observe behavioral changes were included. Two independent reviewers selected studies, extracted data and analyzed the risk of bias with a tool for before-and-after studies. The certainty of the evidence was evaluated with the GRADE approach. Results: Three studies were included. The Frankl Scale and North Carolina Behavior Scale were used in these studies. Both scales were able to identify behavioral changes in preschool children undergoing a dental intervention, although two of these included studies were considered fair with a high risk of bias, and one considered good with a low risk of bias. Conclusion: Although Frankl and North Carolina behavior scales were able to identify changes in the children`s behavior during dental treatment, these findings are not supported by strong evidence. Thus, further well-designed studies are needed to confirm this evidence.

Hyalinization and Molecular Pathways Involved in Orthodontic Tooth Movement: A Systematic Review and Meta-Analysis

Abstract Objective: To systematically review the hyalinization of experimental tooth movement in humans and animals. Material and Methods: The electronic databases of MEDLINE, PubMed, Cochrane Library, Embase, Institute for Scientific Information, and Google Scholar were searched for performing a systematic review of the related literature published until 2019. Moreover, Endnote X9 software was utilized to manage electronic titles. The searches were fulfilled using keywords of "hyalinization," "orthodontic tooth movement" OR "OTM" AND "periodontal ligament" OR "PDL," "molecular pathways," AND "mechanical cell." Therefore, this systematic review was conducted based on the key consideration of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. Results: Forces ranged between 2.3 and 50 CN had been applied. According to the research design, incisors had been included in two experiments, whereas maxillary molars had been displaced by tipping forces in another rat examination. However, a majority of investigations had stated that hyalinization had firstly appeared within the first 24 hours. Moreover, the amount of prostaglandin-end peroxide synthase 2 (PTGS2) had been positively related to force term and size utilizing Western blotching. As PTGS2 had been included in the prostaglandin E2 (PGE2) metabolism, the up-regulation of PTGS2 gene expression could be connected with that of PGE2 emission. Conclusion: Gene expression in connection with force term and size and also the first signalling pathways were recognized utilizing protein-protein interactions (PPIs).

Prevalence of Dental Fluorosis in Saudi Arabia: A Meta-Analysis

Abstract Objective: To identify the prevalence of dental fluorosis in Kingdom of Saudi Arabia. Material and Methods: Literature search for the present study aimed to include all the relevant studies conducted in Saudi Arabia that reported prevalence of dental fluorosis. A literature search was done using keywords (dental, fluorosis, prevalence) using three databases (Scopus, PubMed, and Web of Science). Grey literature was also searched using Google Scholar and research gate. Literature was searched from 1939 till April 2020. The risk of bias was reported using JBI Critical Appraisal Checklist for Studies Reporting Prevalence Data. Twelve studies were included based on inclusive criteria. The only inclusive criteria were studies that were conducted among people living in Saudi Arabia, and studies that reported the prevalence of dental fluorosis. Samples from all age groups that reported prevalence of dental fluorosis were included. MedCalc statistical software was used to perform the analysis. Results: The overall prevalence of dental fluorosis was found to be 46.52%, 95 CI (26.52% to 67.12%). I2 value was reported 99.8%, 95 CI (99.78% to 99.83%), indicating high heterogeneity amongst the finding of studies. Funnel plots indicate the presence of a strong publication bias. Overall, we found some contrasting findings. One study reported prevalence of dental fluorosis as 0% and other with a comparatively large sample size found dental fluorosis to be 90.6%. Conclusion: The present study adds to the literature regarding dental fluorosis in Saudi Arabia by providing an overview of its prevalence. It is concluded that prevalence of dental fluorosis was a bit high. However, findings indicate publication bias. We did not account for severity of dental fluorosis. All the available data was analyzed to measure dental fluorosis prevalence without considering the sample size and sampling technique.

Study on the distribution and related factors of birth weight of live births in Guangxi Zhuang Autonomous Region of China from 2016 to 2018 / 中华预防医学杂志

Objective@#To investigate the distribution and related factors of birth weight of live births and full-term infants in Guangxi Zhuang Autonomous Region of China.@*Methods@#Based on Guangxi women and children information system from 2016 to 2018, a large real-time database about maternal and live-birth information was established. It covered 1 712 midwifery institutions in Guangxi. A total of 2 394 240 cases of live births were collected and 2 243 129 cases of which were full-term infants. The multivariate logistic regression model was used to analyze the related factors of low birth weight.@*Results@#The birth weight of 2 394 240 live births, (3 123.49±461.08) g, in Guangxi was approximately normal distribution with a peak distribution to the left. The incidence of low birth weight was 8.05%, and the incidence of macrosomia was 2.07%. The incidence of low birth weight was 10.92% for the puerpera with body mass index (BMI, kg/m2) <18.5, 16.82% for the puerpera with height <145 cm, 8.92% for the puerpera with age <20 years old, 7.67% for the puerpera with age ≥35 years old, and 54.65% for the puerpera with premature birth. The birth weight of 2 243 129 full-term infants, (3 176.01±400.78) g, was approximately normal distribution with a peak distribution to the right. The incidence of low birth weight was 2.97%, and the incidence of macrosomia was 2.19%. The incidence of low birth weight was 4.73% for puerpera with BMI<18.5, 8.17% for puerpera with height<145 cm, 4.83% for puerpera with age <20 years old, and 3.05% for puerpera with age ≥35 years old. The risks of low birth weight [OR (95%CI) value] of pregnant women aged <20, 25-29 and 30-34 years old were 1.31 (1.28-1.35), 0.88 (0.86-0.90) and 0.89 (0.87-0.91) times of those aged ≥35 years old. The risks of low birth weight [OR (95%CI) value] of pregnancy BMI <18.5 and 18.5-23.9 kg/m2 group were 1.98 (1.94-2.03) and 1.20 (1.18-1.23) times of those pregnancy BMI ≥24 kg/m2. The risks of low birth weight [OR (95%CI) value] of pregnant women′s height (cm)<145, 145-154, 155-159 and 160-164 cm were 4.67 (4.39-4.97), 2.36 (2.29-2.44), 1.58 (1.53-1.63) and 1.22 (1.18-1.26) times of those heights ≥165 cm group. The risks of low birth weight [OR (95%CI) value] of pregnant women′s gestational age <28, 28-31 and 32-36 years old were 136.65 (124.33-150.20), 1 704.37 (1 509.02-1 925.02) and 33.45 (32.98-33.94) times of those gestational age ≥37 years old.@*Conclusion@#The incidence of low birth weight of live births was higher in Guangxi from 2016 to 2018. There is a higher risk of low birth weight for younger, older, low height, low BMI and preterm women in Guangxi from 2016 to 2018.

Relation between impact factor in orthopedic journals and level of evidence / Relação entre fator de impacto em periódicos ortopédicos e nível de evidência

ABSTRACT Objective: This study aims to assess the quality of articles published in the leading orthopedic surgery journals, by measuring the relation between the impact factor and the number studies with a high level of evidence. Methods: A literature review was performed of articles published in four previously selected journals. A score of journal evidence (RER - Relation between Randomized clinical trials and Systematic reviews) was calculated, considering the number of RCTs and SR published and the total number of full-text articles. Results: The selected journals were JBJS-Am, ASMJ, BJJ-Br and Arthroscopy, with Impact factors of 5.280, 4.362, 3.309 and 3.206 respectively in 2015. In the study, the RER Scores, in the same order, were 9.408, 6.153, 7.456 and 7.779. Conclusion: The journal JBJS-Am is the best available source of information on orthopedic surgery from this point of view. It has the highest Impact Factor and clearly the highest RER Score. On the other hand, we could conclude that the number of published RCT and good quality SR is very low, with less than 10% of all the articles. Level of evidence III, Analyses based on limited alternatives and costs, and poor estimates.

RESUMO Objetivo: Este estudo tem como objetivo avaliar a qualidade dos artigos publicados nos principais periódicos de cirurgia ortopédica, medindo a relação entre o fator de impacto e o número de estudos com alto nível de evidência. Métodos: Realizou-se a revisão de literatura com artigos publicados em quatro periódicos previamente selecionados. Um escore de evidência de periódicos (RER - Relação entre Ensaios Clínicos Randomizados e Revisões Sistemáticas) foi calculado, considerando-se o número de ECR e RS publicados e número total de artigos com textos completos. Resultados: Os periódicos selecionados tiveram o fator de impacto de 5.280, 4.362, 3.309 e 3.206 respectivamente para JBJS-Am, ASMJ, BJJ-Br e Arthroscopy no ano de 2015. No estudo, os escores RER foram, na mesma ordem, 9.408, 6.153, 7.456 e 7.779. Conclusão: A revista JBJS-Am é a melhor fonte disponível de informações sobre cirurgia ortopédica deste ponto de vista. Tem o maior fator de impacto e claramente o maior escore RER. Por outro lado, pudemos concluir que o número de ECR e RS publicados de boa qualidade é muito baixo, com menos de 10% do total de artigos. Nível de Evidência III, Análises baseadas em alternativas e custos limitados, e estimativas ruins.

Prevalence and reactivity of anti-melanoma differentiation-associated gene 5 (anti-MDA-5) autoantibody in Brazilian patients with dermatomyositis

Abstract: Background: There have been no studies to date on the frequency and reactivity of aanti-melanoma differentiation-associated gene 5 (anti-MDA-5) in samples from the Brazilian population with dermatomyositis. Objectives: To analyze this autoantibody in the Brazilian population. Methods: This was a single-center cross-sectional study in which 131 consecutive adult patients (109 dermatomyositis and 22 clinically amyopathic dermatomyositis) with active disease were evaluated from 2000 to 2016. Analysis of the anti-MDA-5 autoantibody was performed by ELISA. Results: The presence of this autoantibody was observed in 14.7% and 22.7% of patients with dermatomyositis and clinically amyopathic dermatomyositis, respectively. In the case of dermatomyositis, the autoantibody was associated less frequently with Raynaud's phenomenon and periungual hyperemia (P<0.05). In clinically amyopathic dermatomyositis, the presence of this autoantibody was not associated statistically with any demographic, clinical, laboratory, or imaging characteristics. Study limitations: The cross-sectional study design did not allow establishing a temporal correlation between anti-MDA-5 autoantibody and various study variables. In addition, pulmonary function tests were not performed in the patients. Conclusions: The frequency of anti-MDA-5 autoantibody was comparable to that of other populations with dermatomyositis, but with a different reactivity than described in the literature. In addition, there was a phenotypic variability between our patients with clinically amyopathic dermatomyositis and those described in the literature. Further studies are needed to confirm the current study's findings and elucidate this autoantibody's reactivity in Brazilians with idiopathic inflammatory myopathies.

Pathogen spectrum in enteroviral infections among children in Beijing from 2010 to 2016 / 中华儿科杂志

Objective@#To understand the epidemiological and etiological characteristics of enterovirus (EV)-associated diseases among children in Beijing from 2010 to 2016.@*Methods@#This was a repeated cross-sectional study. The throat swabs were collected from children with probable EV-associated diseases at the Children' s Hospital Affiliated to Capital Institute of Pediatrics from 2010 to 2016. The samples were sent for pan-EV, enterovirus 71 (EV-A71) and coxsackievirus A16 (CV-A16) detection by real-time fluorescence reverse transcription polymerase chain reaction (RT-PCR) . The viral types of non-EV-A71 and non-CV-A16 EV-positive samples were identified using modified RT-PCR and sequencing with CV-A6, EV-A/B group and 5 'UTR universal primers. The constituent ratios of the prevalence of different EV types in different age and gender groups were compared.@*Results@#Of the 2 703 throat swabs, 1 992 (73.7%) samples were positive for EV, including EV-A71 (19.1%, 516/2 703), CV-A16 (24.3%, 658/2 703), CV-A6 (22.2%, 600/2 703), CV-A10 (4.5%, 122/2 703) and other types of EV (3.5%, 95/2 703). There was 1 case of EV-A71 and CV-A16 co-infection. The positive detection rate of EV-A group (excluding EV-A71, CV-A16, CV-A6 and CV-A10) increased from 11.3% (7/62) to 95.2% (59/62) after using the modified VP1-specific primers and PCR amplification conditions. During the period between 2010 and 2012, CV-A16 and EV-A71 predominated in EV-positive samples. However, CV-A6 accounted for 60.7% (68/112) in 2013, much higher than CV-A16 (23.2%, 26/112) and EV-A71 (12.5%, 14/112). In 2014, EVs were mainly of CV-A16 and EV-A71, but CV-A6 was the predominant type in 2015 (68.2%, 232/340) and in 2016 (38.6%, 151/391). The epidemic season of EVs was mostly from April to August, but CV-A6 showed a small epidemic peak from October to November. The male-to-female ratio of EV-positive patients was 1.50∶1, and EV-associated diseases mostly occurred in children under 5 years of age. Younger children were more susceptible to CV-A6 than to EV-A71 and CV-A16.@*Conclusions@#From 2010 to 2016, there was a significant change in the spectrum of EVs in children with EV-associated diseases in Beijing. Since 2013, non-EV-A71 and non-CV-A16 increased, and CV-A6 gradually became one of the major pathogens of EV-associated diseases. The modified PCR primers and amplification conditions can effectively improve the reliability of test results.

Epidemiological features of prevalent influenza A viruses in children with influenza-like illness during the 2004-2017 season in Beijing / 中华儿科杂志

Objective@#To analyze and compare the epidemiological features of prevalent influenza A viruses in children in Beijing during 13 consecutive surveillance seasons from 2004 to 2017.@*Methods@#This was a repeated cross section study. Throat swabs were collected weekly from children with influenza-like illnesses (ILI) who presented to the outpatient/emergency department of Children's Hospital, Capital Institute of Pediatrics during the period from September, 2004 to August, 2017. All of the specimens were inoculated into Madin Darby canine kidney (MDCK) cells to isolate influenza viruses followed by identifying different types of influenza viruses with reference antisera by hemagglutination-inhibition assay. Descriptive statistics, t test and chi-square test were used to analyze the characteristics of prevalent influenza and characteristics of children infected with different types of influenza viruses.@*Results@#Out of 10 984 specimens from ILI tested for influenza viruses, 1 052 (9.6%) were positive for influenza A viruses, and the positive rate was higher than that of influenza B viruses (6.7%, 741/10 984). Out of 1 052 cases positive for influenza A viruses, 70 cases of seasonal H1N1, 302 cases of 2 009 pandemic H1N1 and 680 cases of H3N2 were identified. The mean age of children with influenza A was (4.2±2.9) years, in whom 55.5% (584/1 052) were male. The mean age of children infected with seasonal H1N1, 2009 pandemic H1N1 and H3N2 was (4.6±2.1) , (4.3±3.1) and (4.2±2.9) years, respectively. There was no significant difference in the mean age among children infected with different subtypes of influenza A viruses (seasonal H1N1 vs. H3N2: t=1.139, P=0.255; 2009 pandemic H1N1 vs. H3N2: t=0.631, P=0.528; seasonal H1N1 vs. 2009 pandemic H1N1: t=0.720, P=0.472), while the mean age of children with influenza B was higher than that of the patients with influenza A ((5.2±2.7) vs. (4.2±2.9) years, t=7.120, P=0.000). The infection rate of influenza A in children with each age group was significantly different from that of influenza B. The infection rate of 2009 pandemic H1N1 and H3N2 increased with age, except for the patients of 0-6 months. Meanwhile, the infection rate of H3N2 in children aged 6 months to 12 years was higher than that of seasonal H1N1 and 2009 pandemic H1N1 (all P<0.05). The influenza A epidemic peaked earlier than that of influenza B when the positive rate of influenza A was higher than that of influenza B, and vice versa. After 2009, circulating strain was substituted by 2009 pandemic H1N1 virus with higher positive rate, while previous seasonal H1N1 had not been detected. The 2009 pandemic H1N1 circulated at high level in two consecutive seasons, which was followed by low level in next season. H3N2 epidemic peaked mostly in winter and spring each year, however, the epidemic wave of H3N2 with high virulence occurred so early in the summer in the year of 2009 H1N1 pandemic.@*Conclusions@#The characteristics of prevalent influenza A viruses in children were different among 13 surveillance seasons from 2004 to 2017 in Beijing. The 2009 pandemic H1N1 and H3N2 became the predominant strains of influenza A virus.

Occupational characteristics of 318 cases diagnosed as occupational asthma / 中华劳动卫生职业病杂志

Objective@#To summarize the clinical characteristics of occupational asthma and provide a basis for revising the diagnosis of occupational asthma in China.@*Methods@#Taking "occupational asthma" , "occupational bronchial asthma" and "bronchial provocation test at work site" as key words, the case reports of occupational asthma in China were retrieved. The general data, latent period, allergen, clinical manifestation, and diagnostic methods were analyzed.@*Results@#A total 318 cases from 14 published literatures were reported.The incidence of male and female is basically similar. The average age of onset is 38 years, and the latent period is from 2 months to 19 years. The top 3 allergens were isocyanates, penicillin and cephalosporins, formaldehyde. During the diagnosis process, 48.8% of the patients were diagnosed by bronchial provocation test, and 19 cases were diagnosed according to the specific IgE antibody. Only 1 case was diagnosed according to the specific skin test.@*Conclusion@#The etiological diagnosis of occupational asthma is not easy. Nearly half of the patients in our country have been diagnosed as occupational asthma by bronchial provocation test at work site. How to identify the relationship between occupational exposure and the occurrence of asthma is one of the main problems we need to solve.