Trabecular Bone
Mostrando 25-36 de 223 artigos, teses e dissertações.
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25. Clinical, biomechanical and histological study on oophorectomy induced menopause
Objective: To investigate the clinical implications as well as biomechanical and histological changes and in bone tissue induced by ovariectomy in 64 rats. Methods: The rats were divided into two groups: bilateral oophorectomy or placebo, and subdivided into four subgroups, according to time postoperatively: three, six, nine and 12 months. The weight o
Acta ortop. bras.. Publicado em: 2014-10
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26. Biomechanical evaluation of subcrestal dental implants with different bone anchorages
This study evaluated the biomechanical influence of apical bone anchorage on a single subcrestal dental implant using three-dimensional finite element analysis (FEA). Four different bone anchorage designs were simulated on a posterior maxillary segment using one implant with platform switching and internal Morse taper connection as follows: 2 mm subcrestal p
Braz. oral res.. Publicado em: 04/08/2014
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27. Escore de osso trabecular: perspectivas de um método de imagem em aprimoramento
TBS (do inglês, “trabecular bone score”) é um novo método que estima a microarquitetura óssea a partir de uma imagem de densitometria óssea (DXA) da coluna lombar. Apesar de o TBS não ser uma medida física direta da microarquitetura trabecular, ele correlaciona-se com o volume ósseo, densidade da conectividade trabecular, número de trabéculas e
Arq Bras Endocrinol Metab. Publicado em: 2014-07
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28. Two and three-dimensional morphometric analysis of trabecular bone using X-ray microtomography (µCT)
INTRODUCTION: Trabecular bones have a porous microstructure and can be modeled as linear elastic solids, heterogeneous and anisotropic. In the literature, few investigations have compared the two- dimensional (2D) and three-dimensional (3D) morphometric analyses of cancellous bone. METHODS: In this investigation eighteen cylindrical samples of cancellous bon
Rev. Bras. Eng. Bioméd.. Publicado em: 2014-06
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29. The effect of Ginkgo biloba extract treatment in the Bcl-2 expression by osteoblasts in the femoral trabecular bone of Wistar rats with glucocorticoid-induced osteoporosis
Evaluate the effect of the extract of Ginkgo biloba L., Ginkgoaceae (EGb) in the Bcl-2 expression by osteoblasts in the femoral trabecular bone of Wistar rats with glucocorticoid-induced osteoporosis. Rats were divided into five groups: osteoporosis; EGb1 (28 mg/kg); EGb2 (56 mg/kg); alendronate (0.2 mg/animal) and control. The treatments were conducted for
Rev. bras. farmacogn.. Publicado em: 2014-06
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30. Ultrasound method applied to characterize healthy femoral diaphysis of Wistar rats in vivo
A simple experimental protocol applying a quantitative ultrasound (QUS) pulse-echo technique was used to measure the acoustic parameters of healthy femoral diaphyses of Wistar rats in vivo. Five quantitative parameters [apparent integrated backscatter (AIB), frequency slope of apparent backscatter (FSAB), time slope of apparent backscatter (TSAB), integrated
Braz J Med Biol Res. Publicado em: 04/04/2014
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31. Direct-write assembly of 3D scaffolds using colloidal calcium phosphates inks
Additive manufacture techniques using concentrated colloidal inks are a promising approach for creating three-dimensional (3D) calcium phosphates scaffolds for bone repair and regeneration. Among those, the direct-write assembly allows building scaffolds with precise size and geometry. In the present work, commercial β-TCP and HA were used to produce two t
Matéria (Rio J.). Publicado em: 2014-03
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32. Glucosamine and chondroitin sulfate association increases tibial epiphyseal growth plate proliferation and bone formation in ovariectomized rats
OBJECTIVE: The growth plate consists of organized hyaline cartilage and serves as a scaffold for endochondral ossification, a process that mediates longitudinal bone growth. Based on evidence showing that the oral administration of glucosamine sul
Clinics. Publicado em: 2014
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33. Tocotrienol supplementation in postmenopausal osteoporosis: evidence from a laboratory study
OBJECTIVE: Accelerated bone loss that occurs in postmenopausal women has been linked to oxidative stress and increased free radicals. We propose the use of antioxidants to prevent and reverse postmenopausal osteoporosis. This study aimed to examine the effects of tocotrienol, a vitamin E analog, on bone loss due to estrogen deficiency. Our previous study sh
Clinics. Publicado em: 2013-10
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34. Effects of masticatory hypofunction on mandibular morphology, mineral density and basal bone area
AIM: This experimental study investigated the association between masticatory hypofunction and mandibular morphological dimensions and internal bone characteristics. METHODS: Twentyfour 21-day-old male Wistar rats were randomly divided into two groups, according to the diet consistency. The control group (CG) was fed a solid diet (pellets) and the experiment
Braz. J. Oral Sci.. Publicado em: 2013-09
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35. Effect of autologous stem cells on regenerated bone during distraction osteogenesis by Ilizarov technique in the radius of dogs: histomorphometric analysis
PURPOSE:To investigate by histomorphometry the distraction osteogenesis by Ilizarov technique in dog radius with the use of autologous stem cells in regenerated bone. METHODS:Ten dogs (20 radiuses) underwent the osteotomy of 20% of extension of their radiuses, and osteogenic distraction using the Ilizarov technique after this procedure at rate of 1mm per day
Acta Cir. Bras.. Publicado em: 2013-08
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36. Caracterização da displasia fibrosa em imagens de tomografia computadorizada helicoidal empregando a análise da lacunaridade / Characterization of fibrous dysplasia in helical computed tomography images employing the analysis of lacunarity
Fibrous dysplasia is an alteration of development characterized by replacing normal bone for dense connective tissue and immature trabecular bones, typically found in teenagers and young adults. Genetic modification which involves alpha-Gs protein appears to be the basis of the process. The exact incidence and prevalence are difficult to be established, but
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/05/2012