Commercially Pure Titanium
Mostrando 13-24 de 71 artigos, teses e dissertações.
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13. Estudo dos fatores interferentes na adaptação marginal de próteses confeccionadas em titânio comercialmente puro e ligas alternativas / Study of determining factors for the marginal fit of prosthesis made of commercially pure titanium and alternative alloys
O desajuste de copings obtidos por fundição por cera perdida está sujeita à vários fatores tais como: contração de fundição do metal, expansão do revestimento, uso de espaçadores, entre outros. O objetivo do estudo foi avaliar o desajuste marginal pré e pós cimentação de copings obtidos com três ligas de metais básicos - Ni-Cr-Be (VB), Ni-Cr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/04/2011
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14. Effect of titanium surface on secretion of IL1β and TGFβ1 by mononuclear cells
Mononuclear cells play an important role in the modulation of healing. The characteristics of implant surface topography may alter the production of signaling molecules such as cytokines. The aim of this in vitro study was to evaluate the effects of commercially available titanium surface treatments on both cell viability and the secretion of the antagonist
Brazilian Oral Research. Publicado em: 2011-12
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15. Effect of laser welding on the titanium ceramic tensile bond strength
Titanium reacts strongly with elements, mainly oxygen at high temperature. The high temperature of titanium laser welding modifies the surface, and may interfere on the metal-ceramic tensile bond strength. OBJECTIVE: The influence of laser welding on the titanium-ceramic bonding has not yet been established. The purpose of this in vitro study was to analyze
J. Appl. Oral Sci.. Publicado em: 27/05/2011
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16. Comparative study of two commercially pure titanium casting methods
The interest in using titanium to fabricate removable partial denture (RPD) frameworks has increased, but there are few studies evaluating the effects of casting methods on clasp behavior. OBJECTIVE: This study compared the occurrence of porosities and the retentive force of commercially pure titanium (CP Ti) and cobalt-chromium (Co-Cr) removable partial den
Journal of Applied Oral Science. Publicado em: 2010-10
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17. Characterization of titanium welded joints by the orbital gas tungsten arc welding process for aerospace application
Abstract: In this work, three welding programs for orbital gas tungsten arc welding (GTAW), previously developed, were used, using pulsed current and increasing speed (#A), constant current (#B) and pulsed current and decreasing current (#C). One of these should be used for the propulsion system of the Satellite CBERS (China - Brazil Earth Resources Satellit
J. Aerosp. Technol. Manag.. Publicado em: 2010-08
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18. Advances of orbital gas tungsten arc welding for Brazilian space applications - experimental setup
Abstract: The present work describes details of the several steps of the technology involved for the orbital Gas Tungsten Arc Welding (GTAW) process of pure commercially titanium tubes. These pieces will be used to connect the several components of the propulsion system of the China-Brazilian Satellite CBERS, and is part of the Brazilian aerospace industry d
J. Aerosp. Technol. Manag.. Publicado em: 2010-08
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19. Titanium dental implant surfaces
Osseointegration has been defined as "a direct structural and functional connection between ordered, living bone and the surface of a load-carrying implant". However, titanium and its alloys cannot directly bond to living bone after being implanted into the body. The osseointegration of titanium dental implants is critically dependent on the implant surface
Matéria (Rio de Janeiro). Publicado em: 2010
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20. Cell adhesion on different titanium-coated surfaces
Titanium (Ti) is a biocompatible material, and calcium phosphate coating on titanium is commonly applied in order to obtain faster osseointegration around metallic implant. Osteoblast adhesion on three different Ti surfaces was evaluated. The investigated surfaces were commercially pure Ti (cp Ti), Ti coated with sodium titanate (Na-Ti), and Na-Ti followed b
Matéria (Rio de Janeiro). Publicado em: 2010
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21. Surface modification of titanium by plasma nitriding
A systematic investigation was undertaken on commercially pure titanium submitted to plasma nitriding. Thirteen different sets of operational parameters (nitriding time, sample temperature and plasma atmosphere) were used. Surface analyses were performed using X-ray diffraction, nuclear reaction and scanning electron microscopy. Wear tests were done with sta
Publicado em: 2010
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22. A general study of commercially pure Ti subjected to severe plastic deformation: microstructure, strength and corrosion resistance
Bars of Titanium Grade 2 were subjected to deformation by Equal Channel Angular Pressing, both at room temperature and at 300°C. Additionally, some specimens were cold rolled up to 70% reduction. From tensile tests, data such as yield, maximum strength, elongation and area reduction were obtained. Results show that the best strength - ductility combination
Matéria (Rio de Janeiro). Publicado em: 2010
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23. Effect of surface treatments on the bond strength of a resin cement to commercially pure titanium
A investigação da eficácia de tratamentos de superfície que promovem uma forte resistência de união de cimentos resinosos aos metais pode contribuir significantemente para a longevidade das restaurações metalocerâmicas. Este estudo avaliou o efeito de tratamentos de superfície na resistência ao cisalhamento da união de um cimento resinoso ao tit�
Brazilian Dental Journal. Publicado em: 2010
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24. Histological evaluation of the influence of magnetic field application in autogenous bone grafts in rats
Background: Bone grafts are widely used in oral and maxillofacial reconstruction. The influence of electromagnetic fields and magnets on the endogenous stimulation of target tissues has been investigated. This work aimed to assess the quality of bone healing in surgical cavities filled with autogenous bone grafts, under the influence of a permanent magnetic
Publicado em: 2010