RESUMO
Brazil is the largest producer, consumer, and exporter of forage seeds in the world. However, the high incidence of pathogens threatens the seed production system, resulting in decreases in production and quality. Currently, the emphasis has been placed on the use of alternative products as a way of maintaining productivity and environmental sustainability. Thus, the objective of this study was to evaluate the mycoflora associated with the commercial seeds of Brachiaria brizantha and Panicum maximum treated with chemical and alternative fungicide. To test with chemical and alternative treatments, seeds were subjected to fluazinam + thiophanate-methyl, fludioxonil + metalaxyl-M, noni essential oil, rosemary pepper essential oil, sulfuric acid. There was also an untreated control. The most efficient products in the control of incident fungi were, in decreasing order, fluazinam + thiophanate-methyl, fludioxonil + metalaxyl-M, noni essential oil, rosemary pepper essential oil, and sulfuric acid. Fungicides mainly controlled the genera Alternaria, Aspergillus, Bipolaris, Chaetomium, Cladosporium, Colletotrichum, Curvularia, Fusarium, Penicillium, Phoma and Rhizopus. Essential oils showed positive effects in controlling Bipolaris, Curvularia, and Fusarium. Sulfuric acid reduced the incidence of Bipolaris, Colletotrichum, Curvularia, Fusarium, Phoma, and Rhizopus. Seed treatment is one of the promising strategies for obtaining seeds of a healthy quality. As a result, the fungicides and botanical components listed above were promising in reducing fungi associated with forage seeds and can be used for seed treatments and in the development of new products with a natural base through essential oils.
Assuntos
Brachiaria/efeitos dos fármacos , Fungicidas Industriais/farmacologia , Óleos Voláteis/farmacologia , Panicum/efeitos dos fármacos , Óleos de Plantas/farmacologia , Sementes/efeitos dos fármacos , Sementes/microbiologia , Brasil , Fungicidas Industriais/classificaçãoRESUMO
INTRODUCTION: To assess the esthetic subjective effect of malocclusions in the anterior segment on children in the mixed dentition. METHODS: A cross-sectional study was carried out with a population-based sample of 787 children aged 8-10 years in the late mixed dentition (n = 787). Orthodontic Aesthetic Subjective Impact Score determined the esthetic subjective effect. For assessing the malocclusions in the anterior segment (anterior crowding, anterior spacing, diastema, anterior open bite, and anterior maxillary overjet), the following Dental Aesthetic Index criteria were used. Sex, family income, and education level were used as control variables. The variables were analyzed using a simple logistic regression model, estimating crude odds ratios. The variables with P <0.20 in the simple analyses were tested in multiple regression models, estimating adjusted odds ratios with the respective 95% confidence intervals. RESULTS: Increased overjet was 1.54 (95% CI: 1.08-2.17) times more likely to cause greater esthetic concern (P <0.05), especially in girls (P <0.05). CONCLUSIONS: Increased overjet negatively affected children's esthetic self-perception in the mixed dentition.
Assuntos
Má Oclusão , Mordida Aberta , Criança , Estudos Transversais , Dentição Mista , Estética Dentária , Feminino , HumanosRESUMO
OBJECTIVES: To evaluate the impact of anterior occlusal conditions in the mixed dentition on item-level analysis of oral health-related quality of life (OHRQoL). MATERIALS AND METHODS: A population-based cross-sectional study of 787 children aged 8 to 10 years was conducted. The Child Perceptions Questionnaire (CPQ8-10) was used to evaluate OHRQoL, and the analysis of item levels was performed on CPQ8-10 domains. Anterior occlusal characteristics were diagnosed according to the Dental Aesthetic Index criteria. Individual analyses were performed relating the outcome as independent variables. The variables with P < .20 in the individual analyses were tested in multiple logistic regression models, and those with P < .10 remained in the model. The adjusted odds ratio (OR) was estimated with a 95% confidence interval (CI). RESULTS: No associations were found with regard to anterior occlusal characteristics (P < .001) after the variables of the previous determinants were adjusted for multivariate analysis. However, the following variables were significantly associated with negative impact on OHRQoL item levels: sex, in oral symptoms (OR = 1.42; CI, 1.07-1.89) and emotional well-being (OR = 1.34; CI, 1.00-1.79); race, in oral symptoms (OR = 1.48; CI, 1.10-1.98), emotional well-being (OR = 1.54; CI, 1.14-2.06), and social well-being (OR = 1.34; CI, 1.00-1.80); and family income in functional limitation (OR = 1.46; CI, 1.06-2.02), emotional well-being (OR = 1.71; CI, 1.21-2.42), and social well-being (OR = 1.59; CI, 1.14-2.21). CONCLUSIONS: Anterior occlusal conditions did not affect the levels of OHRQoL items.
Assuntos
Cárie Dentária , Má Oclusão , Brasil , Criança , Estudos Transversais , Dentição Mista , Humanos , Saúde Bucal , Qualidade de Vida , Inquéritos e QuestionáriosRESUMO
INTRODUCTION: In this study, we aimed to assess the relationship between normative and perceived orthodontic treatment need associated with quality of life, self-esteem, and self-perception. METHODS: The sample included 248 schoolchildren aged 12 years. The normative aspect of orthodontic treatment was assessed by the Dental Health Component and the Aesthetic Component of the Index of Orthodontic Treatment Need. The subjects were further evaluated for their oral health-related quality of life, self-esteem, and self-perception of oral esthetics. The Aesthetic Component of the Index of Orthodontic Treatment Need was considered as the response variable, and generalized linear models estimated by the GENMOD procedure (release 9.3, 2010; SAS Institute, Cary, NC). Model 1 was estimated with only the intercept, providing the basis for evaluating the reduction in variance in the other models studied; then the variables were tested sequentially, considering P ≤0.05 as the criterion for remaining in the model. RESULTS: In the model, self-perception and self-esteem were statistically significant in relation to the perceived need for treatment. The normative need was significantly associated with the outcome variable and was not influenced by independent variables. CONCLUSIONS: The normative need for orthodontics treatment was not overestimated by the perceived need, and the perceived need was not influenced by sex and the impact on quality of life.