ABSTRACT. The objective was to evaluate sowing density influence on hydroponic corn fodder bromatological composition, harvested in different ages raised on grass mix substrate. The experimental design used was completely randomized with six replications for each treatment, using 2.0 m² plots (1.0 x 2.0 m). The densities were distributed into factorial array (4x4), consisting in four sowing densities (1.0, 1.5, 2.0 and 2.5 kg m-²) and four cutting ages (10, 15, 20 and 25 days). The dry matter content (DMC) and production (DMP) and crude protein (CP), acid detergent fiber (ADF), Fiber neutral detergent (FND) and ethereal extract (EE) were analyzed each cutting age. In terms of DMP (kg m-²), EE (%) and DMC (kg m-²), it is recommended to use the density 1.0 kg m-² with cutting age of 25 days. Regarding CP (%) the best result was at 15 days of cut and density 2.5 kg m-² and the values for FND (%) and ADF (%) were higher at 25 days at 2.0 kg density 2,0 kg m-². The choice of both best harvesting age and density will depend on what is desired of the nutritional forage (CP, EE, NDF, ADF, DMC and DMP) as well its destination, since very close values were found in all analyzes, regardless of density and age of harvest analyzed.

Resumo Introdução No Brasil, o traumatismo dentário (TD) é considerado um problema de saúde pública. No entanto, poucos estudos na literatura relatam a prevalência de TD em pessoas com deficiência (PD). Objetivo O objetivo deste trabalho foi avaliar a prevalência de TD em PD atendidas na Clínica de Pacientes Especiais da Universidade Católica de Brasília (COPE). Material e método Este estudo seguiu um delineamento descritivo e retrospectivo, e foi realizado por meio da análise de 73 prontuários de PD atendidas na COPE entre 2014 e 2016. Foram coletados dados sociodemográficos e clínicos. O teste t foi utilizado entre as proporções para determinar se houve diferenças significativas entre as categorias das variáveis analisadas. O programa “Statistical Package for Social Sciences” (SPSS), versão 23.0 (IBM Corporation, Armonk, NY, EUA) foi utilizado nas análises (p<0,05). Resultado Encontrou-se uma prevalência de TD de 33/73 (45,2%) entre os PD. A fratura predominante foi a do tipo coronária, com uma frequência de 26/33 (78,8%). A maioria dos pacientes tinha acima de 20 anos, com uma frequência de 63/73 (86,3%), significativamente maior do que as frequências das outras categorias (p < 0,008). Os pacientes da amostra apresentavam doenças variadas, sendo as mais prevalentes as das categorias mental, com frequência de 22/73 (30,1%), múltipla com 19/73 (26%), e sistêmica com 14/73 (19,2%). Conclusão Foi encontrada uma alta prevalência de TD em PD, sendo a maioria dos casos relacionados a doenças mentais e múltiplas. Futuras pesquisas são necessárias para avaliar a prevalência de TD nesse grupo de pacientes em todo o Distrito Federal.

Abstract Introduction In Brazil, dental trauma (DT) is considered a public health problem. However, few studies in the literature report the prevalence of DT in disabled persons (DP). Objective The aim of this study was to assess the prevalence of DT among DP seen at the Dental Clinic for Special-Needs Patients (COPE) of the Catholic University of Brasília. Material and method A retrospective, descriptive study analyzing 73 medical charts of DP seen at the COPE between 2014 and 2016 was conducted. Clinical and sociodemographic data were collected. The t-test was used to check for significant differences between the categories of the variables analyzed. The Statistical Package for Social Sciences (SPSS), version 23.0 (IBM Corporation, Armonk, NY, USA) was used for all statistical analyses (p < 0.05). Result A DT prevalence of 33/73 (45.2%) was found among DP. The predominant type of fracture was crown fracture (26/33-78.8%). The majority of patients were over 20 years old (63/73 - 86.3%), at a proportion significantly higher than those for the other age categories (p < 0.008). The patients in the sample had a variety of diseases, predominantly in the following categories: mental (22/73- 30.1%), multiple (19/73-26%), and systemic (14/73-19.2%). Conclusion A high prevalence of DT was found in DP, with the majority of cases being related to mental and multiple diseases. Further research is needed to assess the prevalence of DT in this patient group throughout the Federal District.

A adolescência é um período em que comportamentos potencialmente lesivos ao estado de saúde podem ser iniciados. A avaliação da qualidade de vida nesse contingente torna-se útil para a identificação de grupos em maior risco para comprometimento do bem estar geral. O presente estudo objetivou avaliar a qualidade de vida e fatores associados em uma amostra de 754 adolescentes, com faixa etária de 15 a 19 anos. Para a mensuração da qualidade de vida foi utilizada a versão na língua portuguesa do questionário 12-Item Short-Form Health Survey (SF 12). Os resultados apontaram níveis satisfatórios de qualidade de vida, sendo estes maiores com a prática frequente de atividade física e a ausência de condições como atividades trabalhistas e consumo de tabaco e bebida alcóolica. O sexo feminino foi correlacionado a menores escores em aspectos mentais da qualidade de vida.

Adolescence is a stage of life when potentially harmful behaviors to health can be initiated. For this reason, the assessment of quality of life at this age is useful to identify higher risk groups that may prejudice general well-being. This study aimed to evaluate the quality of life and associated factors in a sample of 754 adolescents between the ages of 15 and 19. For the measurement of quality of life a Portuguese language version of the 12-item short-form (SF-12) Health Survey questionnaire was used. The results revealed that satisfactory levels of quality of life are higher with the frequent practice of physical activities and the absence of conditions such as work activities and the consumption of tobacco and alcohol. The female sex was correlated with lower scores in mental aspects of quality of life.

O objetivo deste estudo é avaliar as propriedades psicométricas do 12-ITEM HEALTH SURVEY (SF-12). Foram utilizados dados de um inquérito epidemiológico de saúde bucal realizado em 2008/2009 no município de Montes Claros (MG), constituído de 2157 indivíduos de ambos os sexos. A estrutura relacional do SF-12 foi avaliada pela Análise Fatorial Exploratória (AFE), a confiabilidade foi avaliada através do coeficiente Alfa de Cronbach, o coeficiente de correlação de Pearson foi adotado para avaliar as correlações entre cada item do questionário e seus escores finais. A validade de constructo foi investigada através da comparação dos níveis dos escores dos componentes físico (PCS) e mental (MCS) do SF-12 entre subgrupos populacionais, utilizando-se os testes Mann-Whitney e Kruskal-Wallis. Os domínios PCS e MCS apresentaram médias, respectivamente, iguais a 49,6(9,0) e 51,9(8,6). O coeficiente Alfa de Cronbach (α = 0.836) apresentou alto grau de confiabilidade. A estrutura relacional foi explicada por dois fatores latentes, responsáveis por 58,36% da variância total. As propriedades psicométricas do SF-12 sugerem que esse é um instrumento sensível para a avaliação de diferentes níveis de QV, é confiável, tem uma consistência interna satisfatória e possui uma rápida e fácil aplicação.

This article aims to assess the psychometric properties of the 12-Item Health Survey (SF-12). Data from an epidemiological oral health survey conducted in 2008/2009 in the municipality of Montes Claros, MG were used, consisting of 2157 individuals of both sexes. The relational structure of the SF-12 was assessed by Factor Exploratory Analysis (FEA), the reliability was assessed using Cronbach's alpha coefficient and Pearson's correlation coefficient was adopted in order to assess the correlations between each questionnaire item and the final scores. The validity of the construct was investigated by comparing the physical (PCS) and mental (MCS) component scores of the SF-12 among population subgroups, using the Mann-Whitney and Kruskal-Wallis tests. The PCS and MCS domains presented averages (standard deviation), respectively, equal to 49.6 (9.0) and 51.9 (8.6). Cronbach's alpha coefficient (α= 0.836) presented a high degree of reliability. The relational structure was explained by two latent factors, which explained the 58.36% of the total variance. The psychometric properties of the SF-12 suggest that this is a sensitive tool to assess the different QL levels, is reliable, has satisfactory internal consistence and is fast and easy to use.

O objetivo deste estudo é avaliar as propriedades psicométricas do 12-ITEM HEALTH SURVEY (SF-12). Foram utilizados dados de um inquérito epidemiológico de saúde bucal realizado em 2008/2009 no município de Montes Claros (MG), constituído de 2157 indivíduos de ambos os sexos. A estrutura relacional do SF-12 foi avaliada pela Análise Fatorial Exploratória (AFE), a confiabilidade foi avaliada através do coeficiente Alfa de Cronbach, o coeficiente de correlação de Pearson foi adotado para avaliar as correlações entre cada item do questionário e seus escores finais. A validade de constructo foi investigada através da comparação dos níveis dos escores dos componentes físico (PCS) e mental (MCS) do SF-12 entre subgrupos populacionais, utilizando-se os testes Mann-Whitney e Kruskal-Wallis. Os domínios PCS e MCS apresentaram médias, respectivamente, iguais a 49,6(9,0) e 51,9(8,6). O coeficiente Alfa de Cronbach (α = 0.836) apresentou alto grau de confiabilidade. A estrutura relacional foi explicada por dois fatores latentes, responsáveis por 58,36% da variância total. As propriedades psicométricas do SF-12 sugerem que esse é um instrumento sensível para a avaliação de diferentes níveis de QV, é confiável, tem uma consistência interna satisfatória e possui uma rápida e fácil aplicação.

This article aims to assess the psychometric properties of the 12-Item Health Survey (SF-12). Data from an epidemiological oral health survey conducted in 2008/2009 in the municipality of Montes Claros, MG were used, consisting of 2157 individuals of both sexes. The relational structure of the SF-12 was assessed by Factor Exploratory Analysis (FEA), the reliability was assessed using Cronbach's alpha coefficient and Pearson's correlation coefficient was adopted in order to assess the correlations between each questionnaire item and the final scores. The validity of the construct was investigated by comparing the physical (PCS) and mental (MCS) component scores of the SF-12 among population subgroups, using the Mann-Whitney and Kruskal-Wallis tests. The PCS and MCS domains presented averages (standard deviation), respectively, equal to 49.6 (9.0) and 51.9 (8.6). Cronbach's alpha coefficient (α= 0.836) presented a high degree of reliability. The relational structure was explained by two latent factors, which explained the 58.36% of the total variance. The psychometric properties of the SF-12 suggest that this is a sensitive tool to assess the different QL levels, is reliable, has satisfactory internal consistence and is fast and easy to use.

A adolescência é um período em que comportamentos potencialmente lesivos ao estado de saúde podem ser iniciados. A avaliação da qualidade de vida nesse contingente torna-se útil para a identificação de grupos em maior risco para comprometimento do bem estar geral. O presente estudo objetivou avaliar a qualidade de vida e fatores associados em uma amostra de 754 adolescentes, com faixa etária de 15 a 19 anos. Para a mensuração da qualidade de vida foi utilizada a versão na língua portuguesa do questionário 12-Item Short-Form Health Survey (SF 12). Os resultados apontaram níveis satisfatórios de qualidade de vida, sendo estes maiores com a prática frequente de atividade física e a ausência de condições como atividades trabalhistas e consumo de tabaco e bebida alcóolica. O sexo feminino foi correlacionado a menores escores em aspectos mentais da qualidade de vida.

Adolescence is a stage of life when potentially harmful behaviors to health can be initiated. For this reason, the assessment of quality of life at this age is useful to identify higher risk groups that may prejudice general well-being. This study aimed to evaluate the quality of life and associated factors in a sample of 754 adolescents between the ages of 15 and 19. For the measurement of quality of life a Portuguese language version of the 12-item short-form (SF-12) Health Survey questionnaire was used. The results revealed that satisfactory levels of quality of life are higher with the frequent practice of physical activities and the absence of conditions such as work activities and the consumption of tobacco and alcohol. The female sex was correlated with lower scores in mental aspects of quality of life.

This study evaluated the influence of solvent evaporation conditions of acid-etching adhesives. The medium dentin of thirty extracted human third molars was exposed and bonded to different types of etch-and-rinse adhesives: 1) Scotchbond Multi-Purpose (SBMP) ; water-based; 2) Adper Single Bond 2 (SB) ; ethanol/water-based, and 3) Prime & Bond 2.1 (PB) ; acetone-based. Solvents were evaporated at air-drying temperatures of 21ºC or 38ºC. Composite buildups were incrementally constructed. After storage in water for 24 h at 37ºC, the specimens were prepared for bond strength testing. Data were analyzed by two-way ANOVA and Tukey's test (5%). SBMP performed better when the solvents were evaporated at a higher temperature (p < 0.05). Higher temperatures did not affect the performance of SB or PB. Bond strength at room temperature was material-dependent, and air-drying temperatures affected bonding of the water-based, acid-etching adhesive.

This study examined the immediate bond strength of etch-and-rinse adhesives to demineralized dentin saturated with either water or absolute ethanol. The research hypothesis was that there would be no difference in bond strength to dentin between water or ethanol wet-bonding techniques. The medium dentin of 20 third molars was exposed (n = 5). The dentin surface was then acid-etched, left moist and randomly assigned to be saturated via either water wet-bonding (WBT) or absolute ethanol wet-bonding (EBT). The specimens were then treated with one of the following etch-and-rinse adhesive systems: a 3-step, water-based system (Adper Scotchbond Multipurpose, or SBMP) or a 2-step, ethanol/water-based system (Adper Single Bond 2, or SB). Resin composite build-ups were then incrementally constructed. After water storage for 24 h at 37°C, the tensile strength of the specimens was tested in a universal testing machine (0.5 mm/min). Data were analyzed by two-way ANOVA and Tukey's test (a = 5%). The failure modes were verified using a stereomicroscope (40'). For both adhesives, no significant difference in bond strength was observed between WBT and EBT (p > 0.05). The highest bond strength was observed for SB, regardless of the bonding technique (p < 0.05). No significant interaction between adhesives and bonding techniques was noticed (p = 0.597). There was a predominance of adhesive failures for all tested groups. The EBT and WBT displayed similar immediate bond strength means for both adhesives. The SB adhesive exhibited higher means for all conditions tested. Further investigations are needed to evaluate long-term bonding to dentin mediated by commercial etch-and-rinse adhesives using the EBT approach.