Identificando práticas musicais e processos de aprendizagem musical no contexto urbano de Montes Claros-MG

MENDES,Jean Joubert Freitas; BRITO,Leila de Jesus Ferreira de;CARMO, Raiana Alves Maciel Leal do. Identificando práticas musicais e processos de aprendizagem musical no contexto urbano de Montes Claros-MG. In: ENCONTRO DA ASSOCIAÇAO NACIONAL DE PESQUISA E POS-GRADUAÇAO EM MUSICA (ANPPOM), 17.,2007, Sao Paulo. Anais... Sao Paulo: ANPPOM, 2007.

Identificando práticas musicais e processos de aprendizagem musical no contexto urbano de Montes Claros-MG

MENDES,Jean Joubert Freitas; BRITO,Leila de Jesus Ferreira de;CARMO, Raiana Alves Maciel Leal do. Identificando práticas musicais e processos de aprendizagem musical no contexto urbano de Montes Claros-MG. In: ENCONTRO DA ASSOCIAÇAO NACIONAL DE PESQUISA E POS-GRADUAÇAO EM MUSICA (ANPPOM), 17.,2007, Sao Paulo. Anais... Sao Paulo: ANPPOM, 2007.

Efetividade do clareamento dentário com peróxido de carbamida a 10% e avaliação dos efeitos adversos sobre o esmalte dentário

The aim of the present study was to assess the effectiveness and adverse effects on dental enamel caused by nightguard vital bleaching with 10% carbamide peroxide. This was accomplished through the interaction of researchers from different areas such as dentistry, materials engineering and physics. Fifty volunteers took part in the doubleblind randomized controlled clinical trial. They were allocated to an experimental group that used Opalescence PF 10% (OPA) and a control group that used a placebo gel (PLA). Fragments of human dental enamel from the vestibular surface of healthy premolars, extracted for orthodontic reasons, were fixed to the vestibular surface of the first upper molars of the volunteers for in situ observation. Bleaching was performed at night for 21 days. The observation periods included Baseline (BL), T0 (21 days), T30 (30 days after treatment) and T180 (180 days after treatment, only for the OPA group). Tooth color was assessed by comparing it with the Vita® scale and by the degree of satisfaction expressed by the volunteer. We also assessed adverse clinical effects, dental sensitivity and gingival bleeding. The study of adverse effects on enamel was conducted in vivo and in situ, using the DIAGNOdent® laser fluorescence device to detect mineral loss. Scanning electron microscopy (SEM) was used to check for superficial morphological alterations, energy dispersive spectrophotometry (EDS) to semiquantitatively assess chemical composition using the Ca/P ratio, and the x-ray diffraction (XRD) technique to observe alterations in enamel microstructure. The results showed that nightguard vital bleaching with 10% carbamide peroxide was effective in 96% of the cases, versus 8% for the PLA group. Dental sensitivity was present in 36% (9/25) of the cases. There was no significant association between gingival bleeding and the type of gel used (p = 1.00). In vivo laser fluorescence analysis showed no difference in values for the control group, whereas in the OPA group there was a statistically significant difference between baseline values in relation to the subsequent periods (p<0.01), with lower mean values for post-bleaching times. There was a significant difference between the groups for times T0 and T30. Micrographic analysis showed no enamel surface alterations related to the treatment performed. No significant alteration in Ca/P ratio was observed in the OPA group (p = 0.624) or in the PLA group (p = 0.462) for each of the observation periods, nor between the groups studied (p=0.102). The XRD pattern for both groups showed the presence of three-phase Hydroxyapatite according to JCPDS files (9-0432[Ca5(PO4)3(OH)], 18-0303[Ca3(PO4)2.xH2O] and 25-0166[Ca5(PO4)3(OH, Cl, F)]). No other peak associated to other phases was found, independent of the group analyzed, which reveals there was no disappearance, nucleation or phase transformation. Neither was there any alteration in peak pattern location. With the methodology and protocol used in this study, nightguard vital bleaching with 10% carbamide peroxide proved to be an effective and safe procedure for dental enamel

Efetividade do flúor e da escovação e eficácia dos materiais de colagem ionômero de vidro e resina composta na reversão das microporosidades criadas pelo condicionamento ácido no esmalte dentário

The objectives of this clinical study was to evaluate the use of the toothpaste with fluoride and without fluoride and the daily tooth brushing are effective in the reversion of the dental enamel conditioned by acid. Another objective of this clinical study was to evaluate if the positioning of orthodontic accessories with glass ionomer cement helps in the reversion of the dental enamel conditioned by acid, when compared to composed resin. One hundred and twenty teeth were selected with indication of extraction by orthodontic reasons. The 30 volunteers were divided, randomly, in two groups. A group used toothpaste without fluoride and the other with it. The teeth of the sample were shuffled, in each volunteer. The teeth were conditioned by the 37% orthophosphoric acid. One of the conditioned teeth stayed in the mouth and suffered action of the abrasion for the tooth brushing, in another teeth a stainless steel mesh protection was positioned with glass ionomer cement, in another tooth the screen was glued with composed resin, in a fourth tooth (the control) was only conditioned after the extractions, 60 days later. All the teeth were appraised through DIAGNOdent, MEVA and EDS. In the obtained data it was possible to observe that there were not statistic significant differences in any comparison, even in the group that did not have access to the fluoride in the toothpaste as in the other that had. According with the used methodology, it was possible to observe too that there was not statistic significant differences in any comparison, even in the group that had the stainless steel mesh positioned with glass ionomer cement as in the group that the stainless steel mesh was positioned with composed resin. However, it was observed that there was an improvement in the topography of the enamel in all the teeth. The accomplishment of this study was facilitated due to the participation of the researchers' of the health area (dentistry), materials engineer, physics and chemistry. The researchers were originating from the Federal University of Rio Grande do Norte and of the University of Queensland, in Australia. This interdisciplinary group was decisive in the accomplishment of the study. It can be concluded that the enamel tends to return to its initial aspect, even if the patient does not have access to fluoride. That is probably due the action of the abrasion for the tooth brushing and mastication. In spite of it not being significant, it is suggested that the conditioned enamel was more resistant to the abrasion in the group that had access to fluoride. It was also possible to conclude that the fluoride liberated by the glass ionomer was not enough to provide a significant difference in the enamel conditioned by the acid, when compared with the composed resin, even in the group that did not use fluoride in the toothpaste as in the group that used

Utilização do Linux como ferramanenta antivírus em redes corporativas

Apresentamos um sistema implementado em Linux® com o intuito de proteger redes contendo estações de trabalho Windows® contra agentes maliciosos. O sistema, denominado LIV - Linux® Integrated Viruswall, agrega características existentes em outras soluções e acrescenta novas funcionalidades. Uma das funcionalidades implementadas é a capacidade de detecção de estações de trabalho contaminadas tendo como base a análise do tráfego de rede. Outra é o uso de uma técnica denominada compartilhamento armadilha para identificar agentes maliciosos em propagação na rede local. Uma vez detectado um foco de contaminação, o LIV é capaz de isolá-lo da rede, contendo a difusão do agente malicioso. Resultados obtidos pelo LIV na proteção de uma rede corporativa demonstram a eficácia da análise do tráfego de rede como instrumento de detecção de agentes maliciosos, especialmente quando comparada a mecanismos tradicionais de detecção, baseados exclusivamente em assinaturas digitais de códigos maliciosos

Efeito in vitro da terapia fotodinâmica sobre bactérias orais em suspensão e na formação de biofilme : ensaio com azul de metileno e toluidina ativados por luz halógena

Photodynamic therapy (PDT) has been proposed as an alternative method for the treatment of biofilm-dependent oral diseases like dental caries. This therapy consists of simultaneous action of a visible light (L) and a photosensitizer (FS) in the presence of oxygen, which leads to production of different reactive oxygen species that can interact with the bacterial cell components, and promote cell death. This study aims to evaluate the antimicrobial action of PDT on oral bacteria in suspension, as well as the formation of mono and multi-species biofilms, in vitro, from a standard strain of Streptococcus mutans (ATCC 25175) and saliva samples, respectively. The dye methylene blue (MB) and toluidine blue (TB) were used at a concentration of 100 mg/ L and activated by halogen light (600 to 750 nm) from a modified hand held photopolymerizer (Ultralux ®, Dabi Atlante, Ribeirão Preto , São Paulo, Brazil.). Planktonic cultures were prepared and submitted to different experimental conditions: 1. PDT using TB 2. PDT using MB, 3. L+ FS- , 4. TB + L - ; 5. MB+ L-; 6. L- FS- (negative control) and 7. administration of 0.12% chlorhexidine digluconate (positive control) (Periogard ®, Colgate-Palmolive Company, New York, USA). The immediate and mediated action of PDT on bacterial suspensions, as well as its effect on biofilm formation were observed from the number of colony-forming units per milliliter (CFU/mL) and measures optical density (OD). The data were statistically analyzed using the Kruskal-Wallis and Mann-Whitney test for the significance level of 5%. According to the results, the PDT showed no antibacterial action on suspensions of S. mutans, regardless of the dye used. PDT with MB activated by halogen light was able to reduce 86.6% CFU/mL multi-species planktonic cultures, however, this reduction was not significant (p > 0.05). PDT showed antibacterial effect, mediate on multi-species planktonic cultures with TB (p < 0.001) and MB (p < 0.001), activated by halogen light. PDT was able to prevent the formation of multispecies biofilm, through the activation of TB by halogen light (p = 0.01). We conclude that activation of the dye toluidine blue and methylene blue, by halogen light (PDT) showed antimicrobial activity, compared to multi-species planktonic cultures prepared from saliva samples

Validação de um método auxiliar de diagnóstico como preditivo da presença de cárie de dentina em dentes decíduos

Esse estudo se propôs a avaliar um método auxiliar de diagnóstico (DIAGNOdent®) na predição de cárie de dentina em dentes decíduos, através de validação histológica e de microdureza. Verificando possíveis diferenças entre os valores obtidos através do método auxiliar, além de determinar um ponto de corte para parada de remoção de tecido cariado. A amostra do estudo foi de 15 crianças que apresentaram 21 cavidades de cárie, tratadas e analisadas desde antes da realização da restauração até quando da exodontia do elemento dentário. Os espécimes foram analisados através do DIAGNOdent® antes da abertura das cavidades, após a remoção do tecido cariado e depois da reabertura das cavidades que se deu após a exodontia dos elementos dentários. Posteriormente, receberam preparo metalográfico para realização de testes de microdureza e microscopia óptica que serviram como forma de validação para as mensurações obtidas pela fluorescência a laser. Houve diferença significativa entre os valores DIAGNOdent® encontrados antes da abertura da cavidade e os demais (p < 0,0001). Havendo correlação significativa (r = 0,432 ; p = 0,019) apenas para as aferições obtidas antes da abertura das cavidades e quando do término da remoção do tecido cariado. Para a microdureza, as médias axiais foram significativamente maiores que as pulpares, existindo correlação entre a microdureza pulpar e os valores do DIAGNOdent® após a reabertura (r = - 0,472 ; p = 0,002). Valores de 15,38% para a sensibilidade, 100% para a especificidade, 100% para o valor preditivo positivo e 71,79% para o valor preditivo negativo, foram obtidos quando se utilizou um ponto de corte de 30 para fluorescência a laser, tendo como padrão-ouro a microdureza pulpar. Partindo da média dos valores de fluorescência a laser obtidos após a remoção do tecido cariado e acrescentando-se um desvio-padrão a esta, o método indicou o valor de 19 como ponto de corte para cessar a remoção de dentina. Concluiu-se que, nas condições analisadas, o método auxiliar de diagnóstico (DIAGNOdent®) é um método acurado na predição de cárie de dentina em dentes decíduos. Além disso, o método comprovou que o padrão usual de remoção de dentina garante a remoção do tecido cariado

Eficácia do cimento de ionômero de vidro como selante oclusal sobre a paralisação de lesões cariosas em dentina

Dental caries consists in a multifactorial and dynamic process. The knowledge of the ionic interactions among dental tissues and dental biofilm make possible its understanding as a process that can be stopped. Recently, the use of sealants have lost its function as preventive agent and passed to be argued as a possible therapeutical agent. This happens by hindering the substratum flow to the lesion inner and, therefore, controls the advance of the process. This study aimed to evaluate glass ionomer cement as a not invasive technique of treatment in occlusal caries without clinical cavitation, but with dentinal involvement. The research was accomplished using a controlled clinical trial with two groups (experimental and control) in 38 subjects (8-18 years) with 51 molars. The teeth of the experimental group were sealed with glass ionomer cement (Vidrion-R, S.S.White, Juiz de Fora, Brazil) and the molars control did not suffer intervention. The experimental group was followed by a year and the control by 8 months due the progression of the carious injury. Both groups were reevaluated to each 4 months with the use of clinical, radiographic and laser fluorescence (DIAGNOdent®) examination. The analysis of the clinical evaluation did not observe a significant difference between experimental and control groups. However, analysis with radiographic and laser fluorescence (DIAGNOdent®) examination observed a significant difference (p> 0,05) between groups, demonstrating a wors condition to the group without intervention. The results suggest that glass ionomer cement as sealant can be efficient to paralyze dentinal caries without clinical cavitation

Inserção e atuação profissional do psicólogo no campo das políticas sociais no Rio Grande do Norte

Since the first years of the regulation of Psychology as a profession in Brazil, it has been carried out studies on the academic graduation, practice, workplace and the social commitment of the category. Despite the diversity of goals and propositions, these studies show that psychologists have been significantly inserted into the social policies field, implying changes in the profession. Since the 1980s, researches in Rio Grande do Norte corroborate the results of national studies. The aim of this paper is to study the insertion and professional career of psychologists in the social policies field in Rio Grande do Norte. In order to accomplish the final results of this paper, it was developed an exploratory research, with the use of a questionnaire, comprised of four parts: general data, academic graduation, complementary graduation and professional experience. The results show three groups of information: characterization, insertion and professional performance. It has been verified expressive insertion of psychologists into the social policies field (41%). The socio-demographic and graduation characteristics are not different from those shown by literature: women, young, from families with an average of 7 to 15 minimum wages. Most of them graduated from public institutions and with post-graduation studies in clinical area. The professionals studied seem to be in worse working conditions compared to the rest of the category, which are also in unfavorable conditions, especially the psychologists who work in social assistance institutions, which present greater problems in its structure. The activities developed do not show anything new, reserving conservative practices instead of effective innovations, emphasizing the discussion on the profession for not considering demands presented to the psychologists in the social policies field. With unique scenario, the eproduction of liberal values corroborates classic performance standards; an unpolitical and uncritical practice is diffused. It is then reconsidered the importance of critical studies that organize goals to the category, with the aim of political transformation concerning the current scenario.

A Psicologia do trabalho e das organizações na formação do psicólogo no Brasil

This research has aimed to analyze the presence of the Work and Organizational Psychology (WOP) at the psychologist s undergraduate education after 2004 s National Curricular Guidelines in Brazil. It has investigated in 43 Brazilian undergraduate courses of Psychology how their Course Pedagogical Projects (CPPs) approach the WOP issues. For that investigation, the CPPs, the subjects programmes related to the WOP and the curriculum grid have been accurately read and analyzed. Categories created by similar studies have also been used. The studied knowledge field has been cited by 41 courses, mainly on the definition of the egress s professional profile, on the expected competences and on the psychologist s formation process lines. Moreover, 28 courses have disposed curricular emphasis on the WOP and 12 have provided professional practices on that Psychology s field. All the courses have displayed, at least, one subject related to the WOP and in 29 cases there have been found between two and six subjects concerned to that field of Psychology, occupying nearby 10% of the whole courses credit hours. It has been verified that the Work and Organizational Psychology is allied to discussions about Quality of Life and Health of the Worker, bonded to work prescriptions at the Personnel Management departments and in other places such as syndicates. Additionally, 37% (147) of the WOP s subjects concerns to the contents of the Work Psychology, 21% (81) relates to the Organizational Psychology, 18% (71) are about Industrial Psychology s topics and 14% (55) debates the field generically. The most often issues are: Recruitment and Selection (25 courses); Training, Development, Learning and Education (24); and Work and Mental Health (24). Those topics have assumed three functions: providing principles for the acting at the WOP field; tutoring psychologists to analyze their own workplaces; and offering a comprehension of the human being mediated by the Work. It has been concluded that the WOP is incorporated on the psychologist s undergraduate education by considering the increasing of its presence and the occurrence of its traditional and emergent topics

Influência do pré-aquecimento na adaptação marginal de dois materiais seladores de fóssulas e fissuras, analisada através de tomografia de coerência ótica

Among the non-invasive techniques employed in the prevention of caries highlights the sealing pits and fissures which is a conservative maneuver, in order to obliterate them to protect them from attack acid bacteria. Influenced by the studies of pre-heating composite resin, which has experienced great improvement in some of their physical properties, this study aimed to evaluate in vitro the superficial and internal marginal adaptation of different materials and sealants in pre-heating or not. A total of 40 extracted human third molars (n=10) that had their occlusal surfaces prepared to receive sealant. We tested two types of sealing materials: resin sealant (Fluoroshield) and low-viscosity resin (Permaflo), where 50% of previously received heated material and the other half received sealant material at room temperature. All samples were subjected to thermal cycling and pH, simulating a cariogenic oral environment, and later were analyzed appliance OCT (optical coherence tomography). The images obtained alterations were recorded and analyzed statistically. Change was considered as the emergence of bubbles, gaps and cracks in the sealant. Comparisons of the same material, assessing the fact that it is not sealed or preheated material, as well as comparisons between different materials subjected to the same temperature were carried out. The nonparametric Tukey test was used (p < 0,05). The results showed that there was statistically significant difference between both the materials analyzed, as between the situations in which the sealant material was submitted (preheated or not). On the issue of marginal adaptation and internal surface, seen through Optical coherence tomography, may suggest that there is a difference between the use of one type or another of the sealing material analyzed, with superiority attributed to resin Permaflo compared to sealant Fluroshield, telling is the same for the different techniques used