193 resultados para classe trabalhadora
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Class III malocclusion is less common occlusal relationship, covering less than 5% of the population. There are various forms of treatment in Class III malocclusion. Depending on how the form is expressed Class III and age of the patient, the therapy may be orthopedic and orthodontic surgical orthodontics. The objective was to review the literature of the last 10 years about ways to compensatory treatment of Class III malocclusion. Several articles were published between 04/2003 and 04/2013 in the Pubmed database from the keyword "Class III malocclusion". However, only 19 articles that addressed the compensatory treatment of Class III were selected. Based on the selected items it was concluded that the treatment of Class III malocclusions in children before the peak of pubertal growth has better prognosis with greater effects orthopedic and orthodontic minor effects. The ideal treatment option for this condition is the Rapid maxillary expansion associated with maxillary protraction of the same. The treatment of Class III malocclusion in young people after the peak of pubertal growth is doubtful prognosis. You can opt to treat rapid maxillary expansion and maxillary protraction of the same or fixed appliance, however, orthopedic effects can be the same or smaller than the orthodontic effects, depending on the age of the patient. Depending on the degree of Class III malocclusion in adults, the treatment will consist of dental compensations or orthognathic surgery.
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A má oclusão de Classe II divisão 2 é caracterizada pela verticalização dos incisivos superiores. Nesse tipo de má oclusão, é comum a presença de sobremordida profunda e curva de Spee inferior acentuada. O presente artigo ilustra que o tratamento dessa má oclusão pode ser facilitado com o emprego dos arcos seccionados, como por exemplo, o arco utilidade, segundo a técnica Bioprogressiva de Ricketts.
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Drug addiction is one of the biggest public health problems worldwide, not only by the dimensions of the problem, but also by the severity of the damage, creating favorable conditions for opportunistic microorganisms such as class Mollicutes. This study aims to evaluate the presence of the main species and genera of this group in the subgingival biofilm of drug addiction patients, comparing them with non-dependent subjects. For this purpose, data on systemic health conditions, socioeconomic characteristics, drug addiction from 72 patients with drug addiction kept in rehab clinics and 100 non-dependent patients who formed the control group were obtained. Intra and extraoral clinical examinations were performed and samples of subgingival plaque were collected through sterile absorbent paper cones. The presence of different genera and species of the class Mollicutes was evaluated by PCR using the specific primers and conditions for each microorganism. The statistical analysis was performed using the Chi-square test for comparisons of three or more variables and the Mann-Whitney test, with significance level of 5%. Out of species and genera evaluated, Mycoplasma salivarium showed correlation with gingival inflammation in both patient groups and was more frequently detected among drug addiction patients
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Because it still brings polemic among the professionals, it was mention once more, in this literature review, the theme that aims to define the appropriate timing to approach the bad occlusions of Class II, and also when it would the right opportunity to treat them, in way that would convey to the patient consistent, stable results in a long term. These are important aspects to be taken into consideration by orthodontists, either by those who defend the early treatment or by those who defend the late treatment. Therefore, the present study aims to aid the clarification of daily doubts regarding this aspect.
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This work deals with the historical survey of the class for the Devonian layers, general characteristics of the group and taphonomic preservation standards associated with the group. It was analyzed specimens of scientific collections from brazilian museums and universities. The taxonomic group is represented by four genera in the basins of Parana, Parnaiba and Amazon: Tentaculites, Homoctenus, Styliolina and Volynites. The tentaculitids occur from Ordovician to the Devonian, having its peak in the Middle Devonian. The class has three known orders: Tentaculitida, animals of benthic habit, Homoctenida and Dacryoconarida, animals of habit planktonic. It was also noticed the presence of two patterns of taphonomic conservation: isolated and grouped specimens.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em História - FCLAS
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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The machining process is so much important in the economic world. Many machining parameters have been studied to maximize results, in terms of cost and lifetime. (decrease of cutting tool wear, improved surface finish, among others). The objective of this study is to evaluate the wear of a ceramic tool in the machining of the aluminum alloy 6005 A. The analysis of the wear of the cutting tools is very important due to its big impact on the final finishing of the piece as a whole. The evaluation took place in two stages, first it was done a detailed study of the literature of the whole machining process, where the study of the formation and swarf classification were among the most important steps in this phase. The second step consisted in the machining of the piece of aluminum 6005 A with a ceramic cutting tool constituded of aluminum oxide and magnesium oxide with silicon carbide impregnation. The swarf generated in this process was then photographed with a Zeiss optical microscope and analyzed for its size and shape. Through this comparison it was concluded that the swarf are generated shear swarfs, shaped like a tangled, fragmented and arcs connected, thus classifying the material as medium difficulty machining. Through the image analysis tool it was concluded that the parameter of lower wear was the: Vc = 500m / min, f = 0.10mm / rev and ap = 0.5mm
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Machining processes are one of the most important manufacturing processes in the modern world. In these processes, there are many elements which will influence in the final result of the machined part. Among them, the tools are the principal factor of the rising cost, because its global influence on the process. In aeronautical industries, this can be more evidenced due the need to machining several alloys, between them, aluminum alloys. These alloys have to demonstrate a specific surface finishing to be used in aircraft's fuselage. This kind of industry is one of the segments which is still rising in Brazil, and they are looking viable alternatives in the manufacturing processes of materials, due the need to produce more and more parts and equipment, with costs increasingly reduced. The purpose of this project is the development of a ceramic with differentiated properties. The ceramics were developed using a pre-sintering at 1200 °C, with posterior sintering at 1600°C, and subjected to dry turning process on aluminum alloy 6005. The characterizations showed that ceramics presented with toughness on the center of 1700 MPa and on the surface of 1950 MPa, density 98,5 ±0,14. g/cm³. Ceramics were grinded and faceted, according to ISO standard 1832, and subjected to turning tests in a ROMI lathe brand, model GL240M, using cutting speeds of 500, 800 and 1000 m/min with different feed rates. The machining results showed low occurrence of flank wear to all cutting speeds, and better surface finishing average values of Ra = 0,4935 μm and Rt = 8,112 μm. In general, it could be seen that the tool presents important potential to machining 6005 alloy, and that the use of correct parameters can decrease and/or eliminate subsequent processes, providing important reductions in costs related to the machining processes
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Pós-graduação em Odontologia Restauradora - ICT