Biomechanical Properties
Mostrando 25-36 de 81 artigos, teses e dissertações.
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25. Laser de baixa intensidade e scaffold de Biosilicato: efeitos isolados e da associação das duas modalidades terapêuticas no reparo ósseo
This study aimed to evaluate the effects of low intensity laser therapy (LLLT) (830nm, 120J/cm2, 100mW) and implantation of Biosilicate scaffolds, associated or not, in histological aspects, biomechanical properties of the bone callus and immunoexpression of proteins, growth and transcription factors related to different stages of bone repair, at 15, 30 and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2011
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26. Biomechanical corneal changes induced by different flap thickness created by femtosecond laser
OBJECTIVE: To evaluate the impact of the creation of corneal flaps at different thicknesses on the biomechanical properties of swine corneas. METHOD: Twelve swine eyes were obtained to form two groups: 100 μm flap thickness and 300 μm flap thickness. Each eye was submitted to the following examinations: raster topography to investigate corneal curvature al
Clinics. Publicado em: 2011
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27. Influência de substâncias químicas auxiliares de uso endodôntico e agentes redutores nas propriedades biomecânicas da dentina radicular / Effects of reducing agents and endodontics auxiliary chemical solutions on biomechanical properties of root dentin
Dentre os protocolos de irrigação mais utilizados mundialmente, a associação do hipoclorito de sódio (NaOCl) e o EDTA merece destaque. Entretanto, estes agentes químicos podem causar efeitos deletérios nas propriedades químicas e físicas da dentina, além da ação oxidativa do NaOCl interferir no comportamento de materiais restauradores. O uso de a
Publicado em: 2011
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28. Left-right judgment of haptic stimuli representing the human hand
The handedness recognition of visually perceived body parts engages motor representations that are constrained by the same biomechanical factors that limit the execution of real movements. In the present study, we used small plastic cutouts that represented the human hand to investigate the properties of mental images generated during their haptic exploratio
Psychology & Neuroscience. Publicado em: 2010-12
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29. Ação do paratormônio humano (1-34) no tecido ósseo de ratas osteopênicas. / Action of parathyroid hormone (1-34) on bone tissue in osteopenic rats.
Introduction: Bone remodeling depends upon a variety of systemic and local factors. Systemic factors that have a direct effect include the parathyroid hormone which together with other factors maintains bone homeostasis. Biosynthetic human parathyroid hormone (1-34) [hPTH(1-34)] has been used to stimulate bone formation in patients with osteoporosis. However
Publicado em: 2010
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30. Análise mecânica de retentores intra-radiculares / Mechanical analysis of endodontic post
The fiber-reinforcement composite (FRC) posts introduced the new concept of restorative system, in which the various components of the reconstruction: post, cement, filling material and dentin have now become a complex mechanically homogeneous. The knowledge of the structure, composition and physical properties of these fiber posts systems is important in or
Publicado em: 2010
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31. Efeitos do chumbo sobre o desenvolvimento do tecido ósseo de ratas
O objetivo deste trabalho foi investigar os efeitos do chumbo sobre fêmures e vértebras de ratas durante seu desenvolvimento e maturidade esquelética. Para este propósito, ratas com um mês de idade foram intoxicadas com acetato de chumbo 100mg/Kg de massa corporal, e os grupos controles tratados com salina 0,9% 0,1 ml/100g de massa corporal. O tratament
Publicado em: 2010
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32. Desenvolvimento e validação de conteúdo de um instrumento de avaliação clínica da subida e descida de escada em indivíduos com hemiparesia / Development and content validation of a clinical assessment instrument of stair ascentand and descent in individuals with hemiparesis
Functional limitations resulting from stroke affects performance of daily life activities, such as managing stairs. The existing instruments for the assessment of stair ambulation evaluated distinct and isolated characteristics and there were not found any specific instruments which evaluate, in a comprehensive way, the quality of the movement and the strate
Publicado em: 2010
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33. Biomechanical analysis of the stresses generated by different disocclusion patterns in an implant-supported mandibular complete denture
OBJECTIVES: This study evaluated by three-dimensional finite element analysis the tensions generated by different disocclusion patterns (canine guide and bilateral balanced occlusion) in an implant-supported mandibular complete denture. MATERIAL AND METHODS: A three-dimensional model of implant-supported mandibular complete denture was fabricated according t
Journal of Applied Oral Science. Publicado em: 2009-10
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34. Evaluation of titanium implants with surface modification by laser beam: biomechanical study in rabbit tibias
The purpose of the present study was to evaluate, using a biomechanical test, the force needed to remove implants with surface modification by laser (Nd:YAG) in comparison with implants with machined surfaces. Twenty-four rabbits received one implant with each surface treatment in the tibia, machined surface (MS) and laser-modified surface (LMS). After 4, 8
Brazilian Oral Research. Publicado em: 2009-06
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35. Efeitos do acetato de chumbo em tecido ósseo de ratos
Lead is a ubiquitous pollutant in the environmental ecosystem which distribution is mainly anthropogenic, come from burning fossil fuels, mining and various industrial products. There is little knowledge of the involvement of this element on the bone metabolism. This study aimed to determine possible changes in adult rat bone, contaminated with lead acetate
Publicado em: 2009
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36. Morphological, biomechanical and biochemical analysis of tendon of obese Zucker (fa/fa) rats / Analise morfologica, biomecanica e bioquimica de tendão de ratos Zucker (fa/fa) obesos
Obesity is considered a worldwide epidemic, one of the biggest public health problems in many parts of the planet, which grows in alarming rates. In Brazil, the decline in rates of malnutrition has been accompanied by rising rates of overweight and obesity, which can be defined as the accumulation of abnormal or excessive fat which presents a risk to health.
Publicado em: 2009