O controle de preensão em pinça em adultos jovens: efeito da posição do punho

The human hand is the focus of inumerous research studies. Human individuals are capable of performing manual tasks beyond the ability of any other animal. Such large motor ability is due in part to contact surface of the pulp thumb in opposition to the other fingers. Evidences in the literature show that the position of the upper limb influences the ability of hand strength and control. Specifically, the position of the wrist has great influence on the production of pinch strength. The main objective of this study was to investigate the influence of wrist position on the pinch grip with the thumb in opposition to the index finger. Participants of the present study were 21 undergraduate students, 10 men and 11 women. Participants performed a pinch grip task in three wrist positions - maximum flexion, maximum extension and neutral - on two force conditions - 20% and 40% of maximum voluntary contraction (MVC). MVC was measured in two attempts in each of the three positions of the wrist for a period of three seconds, and the trial of the best result was used as the parameter for task performance. In each trial participants maintained the force production at position for 10 seconds. All participants performed each test condition four times, and the first was used as a familiarization trial and discarded from further analysis. In all trials visual feedback online was provided. Results of both group gender showed variability was similar for force production. Men were stronger than women, but this difference was not significant and both produced on the average more strength in the neutral wrist position than in flexion or extension. In the extended position participants were significantly less variable than in the flexion and neutral positions. We obtained a significant positive correlation between weight and pinch force...(Complete abstracts click electronic access below)

A posição do sujeito nos anúncios da revista A Cigarra

La pertinence de ce travail réside dans le fait qu'il y a aussi une étude sur la position du sujet dans la période especifié, entre les années 1914 à 1924. Il faut se rappeler que ces études visent à trouver des explications pour les changements qui se produisent réellement dans la langue. A cet effet, l'analyse de la variation est essentiel, car un changement survient dans une situation de changement. Les recherches dans le Variação e Mudança Linguística exigent que le chercheur soit conscient des changements brusques qui peuvent survenir tout au long de votre projet. Cela signifie que de traiter directement avec un phénomène variable, tout incident qui se produit les causes ne changera pas le résultat final de la recherche. Après l'analyse des résultats a permis de conclure que la position de l'objet varie avec le verbe utilisé dans la phrase. Par ailleurs, il est intéressant de noter que peu de données ont été analysés, ce qui signifie pour confirmer un changement de la langue aurait besoin d'un plus grand nombre de données et de comparer nos résultats avec les études de phases antérieures de la langue

Análise das fricativas em posição de coda nas Cantigas de Santa Maria

The present study has as main objectives the mapping and the analysis of fricatives in coda position in Galician-Portuguese religious songs of Alfonso X, the Wise King. The consonant system of BP, specifically with respect to fricatives, will be considered as object of study. The initial approach of the data, to establish whether there is opposition between the sounds represented by the focused graphemes, will be taken from the structuralism model (CAGLIARI, 2002). Thus, the elucidation of some characteristics of Portuguese linguistic background may contribute to clarify facts of its current structure

A Bienal do Vazio: análise comparativa das estratégias de tomada de posição dos jornais O Estado de S. Paulo e Jornal Semanal da 28ª Bienal de São Paulo

This paper proposes a comparative analysis of cultural critical, articles and reports related to the 28th International Biennial of Art of São Paulo published in the newspapers O Estado de S. Paulo and Jornal Semanal da 28ª Bienal de São Paulo, from October to December 2008. Specific aims of analysis are how an institution devoted, like Biennial, creates mechanisms to defend their choices and hegemonic position within the arts field and also to examine how this dedication can be demystified by critics from diffusion field not linked to the institution. For the study will be used the concepts of field, hierarchy of legitimacy and position of an agent developed by Pierre Bourdieu, as well as historical notions of Cultural Journalism and journalistic criticism

A posição do sujeito em diferentes gêneros textuais do jornal O Araraquarense: um estudo variacionista

Este trabalho objetiva estudar o fenômeno da posposição do sujeito com relação ao verbo em distintos tipos e gêneros do jornal: O Araraquarense do início do século XX, e verificar se há alguma diferença entre eles, quanto à posição do sujeito na frase. A escolha de um corpus jornalístico é devida ao fato de seu texto ser muito propício para analisar os processos de implementação de uma possível mudança no português brasileiro; por se tratar de um texto público, o qual atua sobre os elementos da situação sócio-histórica em que está inserido e por sofrer influências dessa situação. Foram analisados dados coletados de artigos de opinião e notas sociais, levando em conta os tipos textuais: descrição, dissertação, injunção e narração (TRAVAGLIA, 2003, p.103). Constatou-se que os tipos (dissertativo e narrativo) foram predominantes nos artigos de opinião, e que somente o tipo narrativo esteve presente nas notas sociais. A posição do sujeito foi analisada em função dos seguintes grupos de fatores: tipo sintático do verbo, tipo morfológico do sujeito, padrão de construção e tipo textual. Como principais resultados, constatou-se: (i) um índice de posposição de 47% em notas sociais e de 19,2% em artigos de opinião; (ii) tipo do verbo (transitivo direto) 21,7% em artigos de opinião e 44,7% em notas sociais; neste mesmo gênero os verbos (inacusativo, bitransitivo, intransitivo e verbo de ligação) apresentaram, respectivamente, 71%, 45%, 37% e 37,9%; (iii) tipo morfológico do sujeito (sintagma nominal) em artigo de opinião 16,5% e 41,4% em notas sociais, 28,2% de (pronome pessoal) em artigo de opinião e 68,3% de (nome próprio) em notas sociais; (iiii) tipo textual (narrativo) 47,6% em notas sociais e em artigo de opinião 18,8% (dissertativo) e 27,8% (injuntivo)

Otimização de portfólio utilizando como métricas de retorno medidas de posição central

This paper consists in applying the Modern Theory of Portfolio (MPT) using central position measurements for modeling the return on investment fund of a renowned financial institution and compare with the Medium- CVaR model. The measurement of risks and returns becomes increasingly important for investors to minimize their losses to maximize thus their possibilities of earnings, taking into account sudden change scenarios. We present concepts of investment funds used as data and research on central position measurements to determine which measure was more suitable. To assemble the Efficient Frontier of assets considering the method proposed measure of central position-CVaR position is used MatLab. Then, after getting the Frontier, it was possible to compare it with the Medium-CVaR model, already proven effective. Finally, we analyze the viability of the proposed model in portfolio management

Avaliação anteroposterior da posição da mandíbula em crianças dolicofaciais com má oclusão Classe II, divisão 1 de Angle

In this study, it is proposed to evaluate the anteroposterior position of mandible in children with Angle Class II, division 1 malocclusions, to compare two different methods of evaluating the jaw position and verifying the correlation between these two methods. We selected 26 Brazilian children with vertical growth pattern and Angle Class II, division 1 malocclusions, aged between 7 years and 8 months to 9 years and 6 months. The evaluation of the anteroposterior position of the mandible was performed with the use of lateral cephalograms by cephalometric angular SNB and linear Pog-Nperp. Based on the results obtained, it was concluded that the SNB identified more children with mandibular retrusion than Pog-Nperp; the increased tip of the SN plane may have decreased values of SNB; Pog-Nperp minimizes the possibility of error in the anteroposterior position of the mandible, since it eliminates the variable tip of the anterior skull base (SN plane); none of the cephalometric measurements used are able to eliminate the influence of the nasion point in the anterior-posterior and vertical position; correlation between SNB and Pog-Nperp is very low.

Reaproveitamento imediato da ação expansora em um caso de expansão rápida da maxila assistida cirurgicamente

Immediate reutilization of the expanding action in a case of rapid maxillary expansion surgically assisted. The orthopedic rapid maxillary expansion (RME) and rapid maxillary expansion surgically assisted (RMESA) are conducted with the aim of giving an appropriate jaw, capable of providing a normal occlusion. In extreme cases, where there is a severe atresia, it is necessary to perform an expansion beyond that allowed by the expander, followed by another conventional device or a butterfly expander, when the atresia is in the anterior maxillary region. In this situation, there are two options: wait about 90 days to allow intermaxillary suture restructuring and perform a new RME / RMESA or proceed immediately to the expansion process. Considering the biological cost, financial and clinical time, the procedure of reusing the immediate expander action becomes the technique of choice in these cases, been the operational procedure performed simplified and in just four steps. This work will show a case report where, after accomplishing the RMESA was observed that even after changing the shape of the maxillary arch, the severity of atresia could not be corrected, especially in the anterior region, and more expansion was needed. Aiming to correct the atresia in the anterior maxilla, the technique used was to reuse the immediate expander action through the change of an intraoral screw expander for a conventional butterfly type screw expander.

Alterações dimensionais em pacientes submetidos à expansão rápida da maxila com aparelho do tipo Haas

The maxillary atresia is a alteration in the transverse dimension that can result in a unilateral or bilateral crossbite. For correction of atresia of the upper dental arch appliances with the intent to expand the arch of orthopedic or orthodontic manner are used, obtaining across-compatibility between the dental arches. The purpose of this study was to evaluate the dimensional changes of the maxillary in patients in the mixed dentition with atresia in the upper dental arch, using occlusal radiographs taken before, after rapid maxillary expansion and after removal of the appliance. Methods: the sample consisted of 35 patients who used the appliance type conventional Haas, in the mixed dentition, according to the standard protocol for installation, activation, containment and removal of the appliances rapid maxillary expansion. Results: the results confirm that the suture opening occurs in greater quantities in the anterior (4.3 mm) than posterior to (3.74 mm), representing a triangular opening of 7 degrees on average with the posterior opening 87% of the quantity of anterior opening. The molars region expanded about 5 mm, and the base bone 3.7 mm, representing a 74% bone expansion of the expansion teeth.

Modificação de forma e dimensões dos arcos superior e inferior obtidas em modelos de estudo após expansão rápida da maxila com o aparelho hyrax

The aim of an orthodontic treatment is the achievement of a balanced, esthetic and, most of all, stable, intra and inter arches relationship. A common problem observed in occlusion is posterior crossbite and atresic maxilla. This problem may be treated by slow expansion, rapid expansion or surgically assisted expansion. For the present study cast models of 14 children between 7 and 11 years old were evaluated. There were 7 male and 7 female subjects that presented posterior crossbite and needed rapid maxillary expansion. The Hyrax appliance performed the therapy for correction of this transversal alteration, which is a common possibility in the treatment of this malocclusion. It was observed that the distance between the upper first molars and upper cuspids increased significantly; the length of the upper arch decreased and its perimeter increased significantly. At the lower arch there were no dimensional changes.

Tratamento cirúrgico de canino incluso em mento: relato de caso

The mandibular and maxillary canines when well positioned in the arch, are important functionally and aesthetically. Although these teeth are frequently malpositioned in the dental arch, their absence of eruption are not common, occuring more frequently with the maxillary canine than the mandibular canine. The canine transmigration is a well-known pre eruptive phenomenon in which the tooth goes thru the facial midline, occurring more frequently in the mandible than in maxila. Females are more susceptible than males and the right side more than the left one. Normally the patients do not show any symptoms, and this condition is observed during radiographic exams to diagnose the late exfoliation of the deciduous canine or for any other purpose. Due to the relationship between impacted canines and pathologic lesions, infection, trauma to the adjacent teeth, pain, ectopic eruption and interference with prosthesis, it´s indicated the surgical extraction of these teeth. The goal of this article is to describe and discuss the surgical treatment of an impacted canine (43) in the chin.

Reabilitação total da maxila com enxerto intraoral: relato de caso

The early tooth loss and periodontal disease often leave inadequate bone volume for installation of osseointegrated implants. The autogenous bone graft is considered the gold standard for reconstruction of residual bone defects. Some surgical techniques can be performed, including extra or intraoral donor sites depending on the degree of bone loss, depending on surgical-prosthetic planning and general condition of the patient. The intraoral bone grafts offer a safe option to rebuilt bone volume in smaller rehabilitations, with low morbidity and minimal postoperative discomfort. Among the possible donor sites, the mandibular ramus and body, which offer predominantly cortical bone, and the chin area, which offers corticomedullary bone tissue, can be harvested. The graft will be suitable both in quantity and quality, preserving the capacity of osteogenesis, osteoinduction and osteoconduction, which differentiate autogenous grafts from other biomaterials. The aim of this study was to report a clinical case in which the mandibular ramus graft was used for total reconstruction of an edentulous maxilla, showing that even large areas can be reconstructed with grafts from intraoral origin. All the steps that allowed the complete reconstruction of the maxilla done by an intraoral donor area are listed in the text, culminating in an extremely satisfactory clinical result.

Uso de um distrator ósseo dentoimplantossuportado, feito a partir de tornos expansores convencionais, na reabilitação oral

Osteodistraction is a clinical reality, available in the last decades for the resolution of large bone deficiencies, in cases that there are pre-existing, but misplaced implants and teeth. The aims of thearticle is to present a case report in which a new possibility for bone distraction, based on tooth-implant bone distractors, made from standard orthodontic expansion-screws, was used in an area where there was an extensive need of alveolar bone and aesthetical recovery, allied to teeth and dental implant misplacement. This technique presented good clinical results, associated to effective simplicity and low cost, becoming viable clinical solution for bone tissue augmentation and aesthetical optimization. In resume, it is possible to say that the suggested technique achieved its objectives, improving the hard and soft tissue profile, whilst allowing completion of oral rehabilitation.

Estudo anatomico da posição do forame mandibular e da língula em mandíbulas secas

Purpose: The authors tried to verify the anatomic location of the mandibular foramen and língula in dry jaws regarding the anterior and posterior border of the mandible and the incisure, alveolar border and mandibular base, in order to correlate the data with the sagittal split ramus osteotomy. Methods: There were evaluated 44 mandibles (88 sides) from the Morphology Department of the Araraquara Dental School of the São Paulo University (UNESP). The distances measured were previously deter - mined according to the figures presented in this article and were done by the use of a sliding caliper (Brow & Sharpe Digit-Cal Plus), with the mandibles positioned over a Erickson table, and the distan - ces were always measured in millimeters. Results: The pre-determined points and distances founded were X=17,67; Y=14,35; W=20,96 and Z=21,89 for the mandibular foramen, and the relationship between this anatomical structure and the língula shows that the mandibular foramen is in average 5,82 mm below the língula. Conclusions: The authors conclude that the mandibular foramen is lightly posterior in comparison with the ramus mandibular center and that the língula is a very important anatomic landmark for the ramus surgeries as well the knowledge of the distance between it and the mandibular foramen entrance.