Adhesive bonding of resin composite to various titanium surfaces using diferente metal conditioners and a surface modification system

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Wizard CD Plus and ProTaper Universal: analysis of apical transportation using new software

Objective: This study has two aims: 1) to evaluate the apical transportation of the Wizard CD Plus and ProTaper Universal after preparation of simulated root canals; 2) to compare, with Adobe Photoshop, the ability of a new software (Regeemy) in superposing and subtracting images. Material and Methods: Twenty five simulated root canals in acrylic-resin blocks (with 20 degrees curvature) underwent cone beam computed tomography before and after preparation with the rotary systems (70 kVp, 4 mA, 10 s and with the 8x8 cm FoV selection). Canals were prepared up to F2 (ProTaper) and 24.04 (Wizard CD Plus) instruments and the working length was established to 15 mm. The tomographic images were imported into iCAT Vision software and CorelDraw for standardization. The superposition of pre- and post-instrumentation images from both systems was performed using Regeemy and Adobe Photoshop. The apical transportation was measured in millimetres using Image J. Five acrylic resin blocks were used to validate the superposition achieved by the software. Student's t-test for independent samples was used to evaluate the apical transportation achieved by the rotary systems using each software individually. Student's t-test for paired samples was used to compare the ability of each software in superposing and subtracting images from one rotary system per time. Results: The values obtained with Regeemy and Adobe Photoshop were similar to rotary systems (P>0.05). ProTaper Universal and Wizard CD Plus promoted similar apical transportation regardless of the software used for image's superposition and subtraction (P>0.05). Conclusion: Wizard CD Plus and ProTaper Universal promoted little apical transportation. Regeemy consists in a feasible software to superpose and subtract images and appears to be an alternative to Adobe Photoshop.

The impact of the addition of iodoform on the physicochemical properties of an epoxy-based endodontic sealer

Due to the low radiopacity of Sealer 26, iodoform is frequently empirically added to this sealer. Thus, the interference of this procedure with the physicochemical properties of Sealer 26 must be evaluated. Objective: This study evaluated the influence of the addition of iodoform on setting time, flow, solubility, pH, and calcium release of an epoxy-based sealer. Material and Methods: The control group was pure Sealer 26, and the experimental groups were Sealer 26 added with 1.1 g, 0.55 g or 0.275 g of iodoform. Setting time evaluation was performed in accordance with the ASTM C266-03 speciflcation. The analysis of flow and solubility was in accordance with the ISO 6876-2001 speciflcation. For the evaluation of pH and calcium ion release, polyethylene tubes were filled with the materials and immersed in flasks with 10 ml of deionized water. After 24 h, 7, 14, 21, 28, and 45 days pH was measured. In 45 days, the calcium released was evaluated with an atomic absorption spectrophotometer. Results: The addition of iodoform increased setting time in comparison with pure sealer (P < 0.05). As for flow, solubility, and calcium release, the mixtures presented results similar to pure sealer (p > 0.05). In the 24 h period, the mixture with 1.1 g and 0.55 g of iodoform showed lower pH than pure sealer and than sealer added with 0.275 g of iodoform (P < 0.05). Conclusions: The iodoform added to Sealer 26 interferes with its setting time and solubility properties. Further studies are needed to address the clinical signiflcance of this interference.

Effects of calcium hydroxide addition on the physical and chemical properties of a calcium silicate-based sealer

Recently, various calcium silicate-based sealers have been introduced for use in root canal filling. The MTA Fillapex is one of these sealers, but some of its physicochemical properties are not in accordance with the ISO requirements. Objective: The aim of this study was to evaluate the flowability, pH level and calcium release of pure MTA Fillapex (MTAF) or containing 5% (MTAF5) or 10% (MTAF10) calcium hydroxide (CH), in weight, in comparison with AH Plus sealer. Material and Methods: The flowability test was performed according to the ISO 6876: 2001 requirements. For the pH level and calcium ion release analyses, the sealers were placed individually (n=10) in plastic tubes and immersed in deionized water. After 24 hours, 7 and 14 days, the water in which each specimen had been immersed was evaluated to determine the pH level changes and calcium released. Flowability, pH level and calcium release data were analyzed statistically by the ANOVA test (alpha=5%). Results: In relation to flowability: MTAF>AH Plus>MTAF5>MTAF10. In relation to the pH level, for 24 h: MTAF5=MTAF10=MTAF>AH Plus; for 7 and 14 days: MTAF5=MTAF10>MTAF>AH Plus. For the calcium release, for all periods: MTAF>MTAF5=MTAF10>AH Plus. Conclusions: The addition of 5% CH to the MTA Fillapex (in weight) is an alternative to reduce the high flowability presented by the sealer, without interfering in its alkalization potential.

Effect of root canal preparation, type of endodontic post and mechanical cycling on root fracture strength

Objective: To evaluate the impact of the type of root canal preparation, intraradicular post and mechanical cycling on the fracture strength of roots. Material and Methods: Eighty human single rooted teeth were divided into 8 groups according to the instruments used for root canal preparation (manual or rotary instruments), the type of intraradicular post (fiber posts-FRC and cast post and core-CPC) and the use of mechanical cycling (MC) as follows: Manual and FRC; Manual, FRC and MC; Manual and CPC; Manual, CPC and MC; Rotary and FRC; Rotary, FRC and MC; Rotary and CPC; Rotary, CPC and MC. The filling was performed by lateral compactation. All root canals were prepared for a post with a 10 mm length, using the custom # 2 bur of the glass fiber post system. For mechanical cycling, the protocol was applied as follows: an angle of incidence of 45 degrees, 37 degrees C, 88 N, 4 Hz, 2 million pulses. All groups were submitted to fracture strength test in a 45 degrees device with 1 mm/min cross-head speed until failure occurred. Results: The 3-way ANOVA showed that the root canal preparation strategy (p<0.03) and post type (p<0.0001) affected the fracture strength results, while mechanical cycling (p=0.29) did not. Conclusion: The root canal preparation strategy only influenced the root fracture strength when restoring with a fiber post and mechanical cycling, so it does not seem to be an important factor in this scenario.

Além-muros: repensando a cidade através do desenho urbano

O trabalho do arquiteto urbanista está diretamente ligado às transformações da cidade, atualmente a insegurança urbana é um dos principais fatores de deslocamento dos segmentos médios pela cidade, fazendo com que uma parcela considerável dessa população deixe os loteamentos tradicionais para habitar condomínios verticais e loteamentos horizontais fechados. Normalmente localizados em áreas afastadas do centro da cidade os loteamentos horizontais fechados não ocupam os vazios urbanos, áreas já estruturadas, necessitando de nova infraestrutura e consequentemente investimento não só de seus empreendedores, mas também do poder público. Esse novo modo de vida contemporâneo vem diminuindo a relação de pertencimento das pessoas com a cidade o que acaba sendo um importante índice de contribuição para o aumento da insegurança. Pensando nisso o projeto toma partido do desenho urbano e de seus dispositivos para proporcionar aos moradores e usuários maior sensação de segurança. E assim, através de lotes com proporções adequadas ao segmento, vias propícias e com direcionamento de fluxo, calçadas que incentivem o deslocamento dos pedestres, diversidade de usos e espaços públicos de qualidade proporcionem melhor qualidade de vida. Como futura arquiteta e urbanista busco por meio desse trabalho final de graduação discutir um pouco sobre a cidade contemporânea e proponho um estudo de possíveis alternativas para incentivar a relação das pessoas com o espaço em que vivem

Aluga-se meu apego: a história de vida dos anunciantes de classificados

A lógica instantânea da sociedade informacional não permite que a maioria dos meios de comunicação abra espaço para a história de vida das fontes jornalísticas, muito menos das anônimas. A instantaneidade com que os fatos têm de chegar ao receptor não é compatível com o exercício jornalístico que busca a densidade, o aprofundamento das relações sociais. “Aluga-se meu apego: a história de vida dos anunciantes de Classificados” busca apontar uma alternativa para o jornalismo oficial e superficial. Trata-se de um livro-reportagem de perfil que tenta mapear traços e mudanças da identidade dos anônimos, apontando-os como agentes sociais de suas próprias vidas e das vidas alheias. A partir dos preceitos da psicologia social e da antropologia, busca-se definir a identidade como um processo socialmente construído e sujeito a constantes mutações. Embuído dessa premissa, o Jornalismo Literário aparece como opção que permite o aprofundamento na cobertura dos fatos e a contextualização dos fenômenos decorrentes dele. O conteúdo do livro-reportagem possui dez perfis que contam fragmentos da vida, dos anseios e das angústias de anunciantes dos Classificados do Jornal da Cidade de Bauru (SP) que coabitam o município com as fontes oficiais utilizadas pelos jornais mas que, porém, não têm a mesma visibilidade nem são encarados como fundamentais para nossa realidade

Comunicação pública e acesso à cultura: um estudo de caso da Oficina Cultural Glauco Pinto de Moraes sob a ótica das Relações Públicas

This study examined how public relations can work through the implementation of tools for public communication, to seek to ensure a citizen of their rights: access to culture. We chose as case study Oficina Cultural Glauco Pintio de Moraes, located in Bauru (SP), an instrument of policy implementation for the Sao Paulo area, to discuss how the actions are carried out to the community as a whole. We analyzed data pertaining to the activities offered by the workshop and suggested actions for communication and relationship with its public workshop to happen more efficiently

Sensações Arquitetônicas: além do que a visão alcança

O presente trabalho trata de uma Avaliação Pós Ocupação (APO) e uma avaliação da percepção ambiental dos usuários do Lar Escola Santa Luzia para Cegos, localizado na cidade de Bauru-SP. De maneira geral, a percepção humana tende a valorizar e utilizar mais o sentido da visão, porém é de extrema importância que os demais sentidos sejam também explorados. Por não ter o sentido da visão o deficiente visual desenvolve mais os outros sentidos, aguçando-os, o que lhe permite vivenciar experiências únicas de diferentes sensações. A arquitetura, como forma de arte, deve buscar não apenas ser “vista”, mas sim experimentada, pelo tato, olfato, audição, sensações térmicas, entre outros fatores cognitivos. A pesquisa se constituiu do levantamento de dados sobre o funcionamento da entidade, dos aspectos técnicos, funcionais e da percepção que os usuários têm do ambiente, e a maneira que se relacionam e se comportam nele. A APO, através de visitas exploratórias, dados coletados e entrevistas com usuários, nos permite conhecer as necessidades e opiniões das pessoas que vivenciam o espaço diariamente. As avaliações de percepção nos levam ao conhecimento do mundo sensitivo dos deficientes visuais, de que maneira seus sentidos atuam para que se localizem e se movimentem em edifícios, ruas e na cidade em geral. Como resultado final uma proposta projetual foi desenvolvida a fim de criar um espaço onde os deficientes visuais possam realizar atividades de convivência, culturais e didáticas de maneira adequada

Efeitos e tendências dos processos de convergência nos modelos de produção jornalística: ecossistema, audiência, instituições e agentes locais em análise

The research aims to analyze the main changes in the concepts of the processes of production and consumption of news content information. The theoretical framework used will be the new consequent social, economic and technological paradigms of the current scenario of convergence of platforms, content and languages. The research aims to investigate the changes in the macro environment of journalistic production and, therefore, examine whether the local flow of news content meets the requirements of a new public consumption target set by the new Brazilian generations, composed of young people influenced by the cultures of computing, audiovisual communication and also by economic and cultural globalization. As expansion of the analyzes sought to verify the impact of these changes in the current models of traditional media, as well as the interference caused and trends in models of existing production. Also a case study is performed on this production flow in comparison with current market research of Jornal da Cidade (JC) of the city of Bauru (SP), the main media of the Grupo Comunicação. The intent of the approach will be to establish some preambles to assist in bringing the theory with the practical impacts on journalistic production, its agents, institutions and the workplace

Oralidade em sala de aula: uma perspectiva de ensino da língua materna

By showing the absence of concern from schools in developing with students any kind of orality work, and the major importance they give only to reading and writing, this research shows an investigation on how the oral communication is established as learning content and how such education is conceived in the early years of elementary school, verifying if there is balance between the time devoted to written and spoken language activities, and how the oral language is treated in the classroom, this research also identifies which and how the oral genres are used, moreover, see if the teacher explores the emerging students‘ speech during class. This research was held in a government school in Bauru (SP), using three instruments to collect data: direct observation, videotaping observed classes, and a questionnaire. The observation and filming were done in only one classroom, a 3rd year of elementary school, in Portuguese classes; however, the questionnaire was applied to all school teachers, in order to have wider analytical conditions. The research´s approach is qualitative and ground on the bibliography study and field research. The analysis results indicate that school still emphasizes reading and writing method of teaching and does not work as bibliography authors propose in their researches about the studied topic; the reason is that this content has been applied to the curriculum recently, the teachers lack of clarity in some important concepts about speech and don´t have a bibliography basis

A perspectiva construtivista nos anos iniciais do ensino fundamental: estudo de caso de uma escola do interior paulista

This research was aimed to discuss the prospect constructivist education. This study was based on a survey literature and an investigation of teaching practices performed the daily routine of a classroom in the first years of elementary school a bilingual private school in Bauru - SP. For development of empirical research was adopted as a tool for collecting observation data. Then the results were analyzed the light of constructivist theory. Through this work we could confirm that observed in the classroom teaching practice-based perspective constructivist happens successfully. Many important elements of constructivist perspective, such as planning lessons, adoption collaborative teaching strategies and investment relations Interpersonal are satisfactorily achieved by teachers who, overall, considering the students' prior knowledge, establish strategies that foster learning, value the interpersonal relationships with group work and guided by the collaboration in the mediation of teacher education process. Therefore, the practice teaching does not happen spontaneously or empirical, critical often attributed to constructivism nowadays.

Um estudo sobre a resolução de problemas e suas relações com a afetividade

This research aims at examining the relationship between the performance of elementary school students Cycle I in problem solving and attitudes toward mathematics. For this, a research was conducted at a state school in the city of Bauru which was selected for convenience. Participants were randomly selected consisting of 75 students, of whom 21 were third years and 57 were of three classes of fifth year. The instruments used for data collection were: a informative questionnaire to characterize the students in age, grade, favorite subjects and the least liked, among others, an attitude scale, Likert type, to examine the attitudes toward mathematics; a interviews with 11 selected students according to scores on the attitudes and mathematical problems to be solved through the method of thinking aloud. The results showed that the major difficulties encountered by students in solving problems were: to understand the problems, formalizing the reasoning, recognize in the problem the algorithms needed for its resolution, make calculations with decimal numbers, do combinatorics, using the sum of equal portions instead of multiplying, self-confidence and autonomy in what he was doing, and others; participants with positive attitudes towards mathematics showed greater confidence to solve problems as well as a greater understanding on what was required by them, but were not detected significant relation between the attitudes and performance, since it was unfavorable

Paulo Freire para crianças

The experiences lived in the Read and Write Program (Programa Ler e Escrever), through the scholarship project Public School and University at literacy (Escola Pública e Universidade na alfabetização), were the starting point for the preparation of this research. From this observations obtained in the classroom, it was noticed gaps present in the process of teaching-learning in the system imposed by the state government of Sao Paulo, preponderant factors to understand how and when children learn. This way, was noted that only one literacy proposal to be adopted by all schools revealed not being efective to meet different contexts, also disregards the individuality of each student. Thus, we applied the Paulo Freire's Method with children from Second year (Former First series) adapted in a playful way, during reinforcement classes at state shcool “Torquato Minhoto”, located in Bauru/SP. Sought to promote, properly, the comprehension of the language code and the development of learning in reading and writing. This manner, some barriers prevented a more thorough job covering a wider range of studantes over an extended period, however, the results were generally positives about the startup of literacy

As relações sociais de trabalho: um campo fértil para a atuação das Relações Públicas

This paper aims at emphasizing the performance of a Public Relations professional, among other activities related to him, as a conflict intermediary in social relations of labor. Therein, a case study is made with administrative employees from the Regional Management Board of Post Office, in Bauru city, São Paulo state, during Collective Labor Agreement period. For comprehension of this specific case, concepts about labor relations and the union movement, as well as about Public Relations activity and its techniques, are used as theoretical substantiation