Strain Gauge
Mostrando 25-36 de 73 artigos, teses e dissertações.
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25. Preload and torque removal evaluation of three different abutment screws for single standing implant restorations
Several authors still consider the mechanical problems of fracture and component loosening as the main causes of failure of implant-supported restorations. The purpose of this in vitro study was to compare the preload of three types of screw for transmucosal abutment attachment used in single implant-supported prosthesis through strain gauge and removal torq
Journal of Applied Oral Science. Publicado em: 2008-02
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26. Effect of light-curing units and activation mode on polymerization shrinkage and shrinkage stress of composite resins
The aim of this study was to evaluate the polymerization shrinkage and shrinkage stress of composites polymerized with a LED and a quartz tungsten halogen (QTH) light sources. The LED was used in a conventional mode (CM) and the QTH was used in both conventional and pulse-delay modes (PD). The composite resins used were Z100, A110, SureFil and Bisfil 2B (che
Journal of Applied Oral Science. Publicado em: 2008-02
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27. Analise do complexo tensão-deformação e mecanismo de falha de pre-molares superiores com diferentes morfologias radiculares e redução sequencial de estrutura dental / Analysis of stress-strain complex and failure mecanism for maxilary premolars with different root morphology and sequential loss of dental structure
The aim of this work was to evaluate the biomechanical behavior of restored maxillary human premolar throughout stress-strain, stress distribtion analysis and fracture resistance with different root morphologies and the cavity preparation design. Forty maxillary premolars with similar coronary dimensions were selected and divided into 4 morphology categories
Publicado em: 2008
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28. Efeito da simulação de perda óssea e contenção inter-dental na deformação do tecido de suporte: análise por extensometria
Existem controvérsias em relação à influência da perda óssea e da contenção na deformação do tecido de suporte dental. O objetivo deste estudo foi analisar a influência da perda óssea e da contenção dental na deformação do tecido de suporte na região anterior da mandíbula em suas diferentes áreas. Oitenta dentes humanos (20 incisivos centr
Publicado em: 2008
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29. In vitro evaluation of the precision of working casts for implant-supported restoration with multiple abutments
OBJECTIVE: The purpose of this study was to compare the accuracy of two working cast fabrication techniques using strain-gauge analysis. METHODS: Two working cast fabrication methods were evaluated. Based on a master model, 20 working casts were fabricated by means of an indirect impression technique using polyether after splinting the square transfer coping
Journal of Applied Oral Science. Publicado em: 2007-06
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30. Food mechanics: a new device for testing fruits and vegetables
The new mechanical device developed is capable of performing compression tests but also bending, torsion and tensile tests. Its measurement system has the following components: a load cell (0 to 9800 N), a strain gauge signal conditioning board, a plug-in general purpose data acquisition board, and a displacement sensor (0 to 29.7 mm). These components are c
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-03
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31. APLICAÇÃO DE MATERIAIS COM MAGNETOSTRICÇÃO GIGANTE EM SENSORES DE DESLOCAMENTO SEM CONTACTO / GIANT MAGNETOSTRICTIVE MATERIALS APPLIED TO CONTACTLESS DISPLACEMENT SENSORS
Magnetostriction is a property of ferromagnetic materials to deform in the presence of a magnetic field. Magnetostriction is an inherent property of magnetic materials, which is unchangeable with time. Materials exhibiting strains in the order of 10-3 are known as giant magnetostrictive materials (GMM).In this dissertation we study the application of these m
Publicado em: 2007
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32. Influência da extensão e tipo de retentor intra-radicular na deformacão e resistência à fratura de dentes tratados endodonticamente
Studies concerning the effects of different post systems insertion depth on the strain and fracture resistance of endodontically treated teeth remain controversial. The purpose of this study was to investigate in vitro the effects of different post systems and depth of post insertion on the strain and fracture resistance of endodontically treated bovine inci
Publicado em: 2007
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33. Shoulder effort in paraplegic locomotion: kinetics and EMG assessment / Esforço do ombro na locomoção de pacientes paraplégicos: avaliação cinética e eletromiográfica
Spinal Cord Injured subjects often refer pain in their shoulders, due to the increased demand of the upper limbs. These subjects usually go through different rehabilitation strategies. Therefore, it becomes rather important to assess those methods in order to avoid further injuries to the patients. The goal of this work was to evaluate the shoulder effort an
Publicado em: 2007
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34. InfluÃncia da extensÃo e tipo de retentor intra-radicular na deformacÃo e resistÃncia à fratura de dentes tratados endodonticamente
Verifica-se grande controvÃrsia sobre os efeitos da extensÃo de diferentes retentores intra-radiculares na resistÃncia de dentes tratados endodonticamente. O objetivo deste trabalho foi avaliar a influÃncia de diferentes extensÃes e tipos de retentores intra-radiculares na deformaÃÃo e resistÃncia à fratura de dentes tratados endodonticamente. Cento
Publicado em: 2007
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35. Resistência à fratura, padrão de fratura e deformação de raízes com canais excessivamente alargados restaurados com diferentes pinos e técnicas - avaliação mecânica e por extensometria
O alargamento do canal aumenta o risco de fratura dentária e ainda não está clara a influência dos materiais e técnicas empregados para restaurar dentes com estas características. Assim, o objetivo deste estudo foi avaliar o efeito de diferentes pinos e técnicas restauradoras na resistência à fratura, padrão de fratura e deformação de raízes com
Publicado em: 2007
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36. ResistÃncia à fratura, padrÃo de fratura e deformaÃÃo de raÃzes com canais excessivamente alargados restaurados com diferentes pinos e tÃcnicas - avaliaÃÃo mecÃnica e por extensometria
O alargamento do canal aumenta o risco de fratura dentÃria e ainda nÃo està clara a influÃncia dos materiais e tÃcnicas empregados para restaurar dentes com estas caracterÃsticas. Assim, o objetivo deste estudo foi avaliar o efeito de diferentes pinos e tÃcnicas restauradoras na resistÃncia à fratura, padrÃo de fratura e deformaÃÃo de raÃzes com
Publicado em: 2007