OBJECTIVES: The aim of this study was to assess the survival of composite restorations after selective (SCR) or total caries removal (TCR) and determine predictors of failures after 36 months. METHODS: 120 teeth with deep occlusal or occlusal-proximal carious lesions were randomly divided into control (TCR; n = 54; 69% Class II) and test (SCR; n = 66; 63% Class II) groups. Clinical evaluation was applied using the USPHS criteria, and the presence of Charlie or Delta scores at the marginal integrity were considered as a failure. RESULTS: The overall survival rate of restorations was 68% after 36 months, 81% for TCR and 57% for SCR (p = 0.004). The multivariable Cox Regression model demonstrated that restorations performed after SCR had 3.44 times greater probability of failure compared to TCR (p = 0.006). The other two predictors for failure of restorations were teeth with Class II cavities (hazard ratio = 3.3) and children with gingival bleeding over 20% (hazard ratio = 2.5). CONCLUSIONS: Performing composite restorations after SCR in primary teeth had success rate significantly lower than restorations performed after TCR. Complex cavities and worst patient s oral hygiene were found to be predictors of failure of restorations. CLINICAL SIGNIFICANCE: Although SCR has been demonstrating high rates of pulp preservation, clinicians should consider that composite restorations fail in a higher frequency compared to TCR in primary teeth and, in some circumstances, may be preferable in terms of restoration longevity.

In this paper, a reinterpretation of the older 14C ages of the Pleistocene substrate of the Holocene barrier-lagoon system of three coastal localities in southern Brazil is presented (Hermenegildo, Cassino, and Curumim). Sedimentological, geochronological, palynological, and diatom analyses of a sedimentary deposit formed in an estuarine/shallow marine environment are examined. This sedimentary deposit is presently found between 22 and 25 m depth below sea level in the Pinheira coastal plain. Results from all studied sites indicate that the deposit was formed under a former sea level of Marine Isotopic Stage 3 (MIS 3) that may have oscillated in the study region between 5 and 23 m depth below present sea level, from 36.2 to 47.7 ka. These results are reinforced by studies of nearby sites, including southeast Brazil. The Pleistocene substrate of the Holocene lagoonal-barrier system, at depths lower than 5 m below sea level, seems to correspond to sedimentary deposits of the Pleistocene barrier formed during MIS 5, while at depths greater than 5 m below sea level, they might correspond to sedimentary deposits that were formed during the relative high sea levels of MIS 3.

Neste capítulo, apresento e sustento uma articulação da noção de habilidade corporal ou sensoriomotora a partir da psicologia ecológica e mostro como ela é relevante para o debate entre Dreyfus e McDowell sobre a lida habilidosa e também para o debate sobre se saber-fazer se reduz ou não a conhecimento proposicional. A metáfora correta para compreender habilidades corporais não é a do computador, mas a do rádio. Essas habilidades resultam de um processo de sintonização do organismo com o seu ambiente.

Resumo: Este trabalho apresenta o desenvolvimento de um Sistema de Informação Geográfica (SIG) das instituições de ensino básico, fundamental e médio, tanto públicas como particulares da região do litoral norte do Rio Grande do Sul, Brasil. O texto relata as seguintes etapas: aquisição dos dados, construção do banco de dados georreferenciado, análise de algumas características das escolas (número de alunos, situação rural/urbana, escola indígena) e infraestrutura disponível (biblioteca, internet, quadra, pátio) e, finalmente, a representação visual da distribuição espacial das escolas e seus indicadores. A base espacial georreferenciada, contendo a localização das escolas, foi construída a partir das coordenadas geográficas fornecidas pela Secretaria Estadual de Educação e pela geocodificação através do ArcGis. A base de dados estatísticos foi coletada através do processamento dos microdados do Censo Escolar de 2018, do Instituto Nacional de Estudos e Pesquisas Educacionais Anísio Teixeira (INEP).

ABSTRACT:

This work presents the development of a Geographic Information System (GIS) for the analysis of basic and high school institutions, both public and private in the northern coast of Rio Grande do Sul, Brazil. The text reports the following steps: data acquisition, construction of the georeferenced database, analysis of some schools characteristics (number of students, rural / urban situation, indigenous school) and available infrastructure (library, internet, court, patio) and, finally, the visual representation of the spatial distribution of schools and their indicators. The georeferenced spatial base, containing the location of the schools, was built from the geographical coordinates provided by the State Department of Education and by geocoding through ArcGis. The statistical database was collected through the processing of microdata from the 2018 School Census, from National Institute for Educational Studies and Research "Anísio Teixeira" (INEP).

A short entry on Social Affordances. Social affordances are possibilities for social interaction or possibilities for action that are shaped by social practices and norms.

Institutional change and diversity have been two major topics of debate in contemporary social sciences. At the core of this debate are actors’ skills to manage the institutional frame that defines limits and possibilities for their strategies. This article analyses how social movements produce institutional change and diversity in the organic food market. It contrasts the experiences of Participatory Guarantee Systems created by Nature & Progrès (France) and Ecovida Agroecology Network (Brazil) to reframe the institutional order of the organic market. Results demonstrate that, while the conventional third-party certification remains the dominant institutional frame, there is space for competing schemes. However, the relevance of the alternatives depends both on the characteristics of the institutional order historically shaped in each context, and on the skills social movements possess to face the interests of the dominant actors. In this way, the article demonstrates that, in comparison to Nature & Progrès, Ecovida has been a more skillful movement because of its closer connection with other social movements and state actors, compelling Brazil to produce an institutional frame more open to diversity than that found in France.

The aim of this study was to assess the occurrence of selfreported dentin hypersensitivity (DH) and its risk indicators in adolescents from a southern Brazilian city. 736 students (1519 years old) were randomly selected from 20 public and private schools in the city of Passo Fundo, Brazil. DH was assessed through the answers on a Likert scale to the question: "Do you have tooth sensitivity?".Participants underwent a clinical examination in which present teeth were counted, and answered an interview based on a structured questionnaire on sociode mographic information, history of dental bleaching, orthodontic treatment and oral health habits. The dependent variable (DH) was dichotomized at the point where hypersen sitivity occurs fairly often or always. Data were analyzed by multivariable logistic regression, including demographic, health history, socioeconomic and behavioral variables. Results: 556 (75.5%) subjects reported having sensitive teeth never, rarely or sometimes, while 180 (24.5%) reported having sensitive teeth fairly often or always. In the final model, number of present teeth, age, skin color, flossing, smoking, bleaching and orthodontic history were not associated with selfreported DH. Females showed significantly greater chance of having DH than males [odds ratio (OR)=1.91; 95% confidence interval (95%CI) 1.342.72]. The likelihood of DH in students at public schools was 63% higher than in those at private schools (OR=1.63 95%, CI 1.012.75). DH is a common perception among adolescents and is associated with female gender and studying at public schools.