Resumo O objetivo do estudo foi testar um modelo de predição para as crenças de autoeficácia de jovens face aos papéis de adulto, identificando seus recursos e de seus contextos. Participaram 434 jovens de ambos os sexos (idade entre 18 e 29 anos), provenientes majoritariamente do estado do Rio de Janeiro. Os instrumentos utilizados foram: Escala de Autoeficácia face aos Papéis de Adulto; Inventário de Habilidades Sociais; Índice de Solidariedade Intergeracional; Inventário de Dimensões da Adultez Emergente; Critério de Classificação Econômica Brasil. Resultados indicaram que as variáveis sexo, foco em si, instabilidade, valores familiarese habilidades sociais de expressão de sentimentos positivospredisseram as crenças de autoeficácia dos jovens.São discutidas as implicações desses resultados para pesquisas de avaliação e intervenção.

Abstract In this study, we tested a predictive model for young people's self-efficacy beliefs regarding adult roles to identify their resources and resources of their contexts in the transition to adulthood. Participants were 434 young men and women (aged between 18 and 29 years) from the State of Rio de Janeiro. The instruments used were: Self-efficacy Scale regarding Adult Roles; Social Skills Inventory; Intergenerational Solidarity Index; Inventory of Emerging Adulthood Dimensions; Brazilian Economic Classification Criteria. Results indicated that the variables as gender, self-focus, instability, family values, and expressing positive feelings predicted young people’s self-efficacy beliefs. We discuss the implications of these results for research on evaluation and intervention.

RESUMO Objetivo: derivar dados normativos preliminares de uma amostra da região Nordeste do Brasil para as habilidades iniciais de leitura e escrita em crianças de 5 anos. Também investigar o efeito do tipo de escola (publica x particular), do momento da avaliação (início x final do ano letivo) e se existem diferenças de desempenho significantes em relação às crianças do Sudeste. Métodos: avaliou-se 389 crianças de 5 anos de idade de 17 escolas privadas e 12 públicas no início e no final do ano letivo utilizando o Teste de Leitura e Escrita. Cada criança foi avaliada individualmente em dois momentos. Foram aplicados os testes estatísticos pertinentes adotando-se o nível de significância menor que 0,05. Resultados: o progresso no desempenho das crianças das escolas particulares foi mais pronunciado que o de seus pares das escolas públicas, acentuando a diferença de aprendizagem existente. A comparação com dados normativos da amostra do Sudeste mostrou que as escolas públicas do Nordeste obtiveram melhores resultados em todas as comparações. As escolas particulares do Sudeste tiveram maior desempenho que as do Nordeste na comparação com desempenho no início de ano, mas não na comparação com desempenho no final do ano. Conclusão: as diferenças de desempenho identificadas nas amostras sugerem a necessidade de se dispor de referenciais específicos por região geográfica e por tipo de escola (pública ou privada). Os dados aqui disponibilizados são preliminares e poderão ser ampliados em estudos futuros.

ABSTRACT Purpose: the study aims to obtain preliminary normative data for early reading and writing skills of 5-year-old children in a sample from the Northeast of Brazil. It also aims to investigate the effects of the type of school (public vs. private) and the time of assessment (beginning vs. end of the school year), and whether there were significant differences in performance, as compared to those of children from the Southeast of Brazil. Methods: 389 5-year-old children from 17 private and 12 public schools were assessed in the beginning and at the end of the school year, by using the Reading and Writing Test. Each student was individually assessed in the two times of the year. Appropriate statistical tests were applied, adopting a significance level lower than 0.05. Results: the progress in the performance of private school children was stronger than that of their peers from public schools, accentuating the existing learning gap. The comparison with normative data from the Southeast revealed that the public schools in the Northeast outperformed those in all topics of comparison. Private schools in the Southeast had a better performance at the beginning of the year, but were outperformed by those of the Northeast at the end of the year. Conclusion: the differences in performance identified in the samples suggest the need for specific norms by geographical regions of Brazil, and by type of school (public or private). The data presented in this study are preliminary and can be enlarged in future studies.

Abstract Calcium fluoride-like materials (“CaF2”) formed on dental surfaces after professional fluoride application are unstable in the oral environment but can be retained longer with a daily NaF mouthrinse. We tested the effect of twice daily 0.05% NaF rinses on the retention of “CaF2” formed on enamel and dentine after applying acidulated phosphate fluoride (APF). “CaF2” formed on enamel/dentine by APF application significantly decreased after exposure to artificial saliva and the 0.05% NaF rinse was ineffective to avoid this reduction. These findings suggest that the combination of APF and 0.05% NaF is not clinically relevant, either for caries or dental hypersensitivity.

Abstract The aim of this study was to analyze the antimicrobial activity and substantivity of Uncaria tomentosa Willd DC (cat’s claw, CC) in root dentin contaminated with Enterococcus faecalis. Forty-eight human premolars were contaminated with E. faecalis (ATCC 29212) and randomly divided into four groups according to the irrigant used during chemomechanical preparation (CMP): CC group: 2% CC gel; CHX group: 2% chlorhexidine digluconate gel (CHX); NaOCl group: 5.25% sodium hypochlorite (NaOCl); and SS group: sterile saline (SS). Microbiological samples were collected before (S1) and after (S2) CMP and after 7 days (S3). Colony-forming units (CFU/mL) at the different sampling times and comparisons among the groups were statistically analyzed by Wilcoxon and Kruskal-Wallis tests (p < 0.05). Significant bacterial reduction was achieved in all groups after CMP (p < 0.05). Results show no significant difference between S3 and S2 (p > 0.05) in the CC and CHX groups. Bacterial load was higher in S3 than in S2 samples (p < 0.05) in the NaOCl and SS groups. Our results suggest antibacterial effect of 2% CC gel against E. faecalis in infected dentin, in addition to antibacterial substantivity of 2% CC and 2% CHX up to 7 days.