Osseointegration
Mostrando 25-36 de 100 artigos, teses e dissertações.
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25. Early osseointegration driven by the surface chemistry and wettability of dental implants
Objective The objective of this study was to investigate the impact of two different commercially available dental implants on osseointegration. The surfaces were sandblasting and acid etching (Group 1) and sandblasting and acid etching, then maintained in an isotonic solution of 0.9% sodium chloride (Group 2). Material and Methods X-ray photoelectron spect
J. Appl. Oral Sci.. Publicado em: 2015-06
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26. Bone tissue response to plasma-nitrided titanium implant surfaces
A current goal of dental implant research is the development of titanium (Ti) surfaces to improve osseointegration. Plasma nitriding treatments generate surfaces that favor osteoblast differentiation, a key event to the process of osteogenesis. Based on this, it is possible to hypothesize that plasma-nitrided Ti implants may positively impact osseointegratio
J. Appl. Oral Sci.. Publicado em: 2015-02
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27. Paired evaluation of calvarial reconstruction with prototyped titanium implants with and without ceramic coating
PURPOSE:To investigate the osseointegration properties of prototyped implants with tridimensionally interconnected pores made of the Ti6Al4V alloy and the influence of a thin calcium phosphate coating.METHODS: Bilateral critical size calvarial defects were created in thirty Wistar rats and filled with coated and uncoated implants in a randomized fashion. The
Acta Cir. Bras.. Publicado em: 2014-09
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28. In-vivo bone response to titanium screw implants anodized in sodium sulfate
PURPOSE: To evaluate the early bone response to a nanotextured dental implant treated with sodium sulfate (Na2SO4), using a rabbit model. METHODS: Twelve animals were randomly divided into group 1 (Control) - machined implants and group 2 (Test) - nanotextured implants. Extra-oral incision was performed to provide access to intended surgical site where the
Acta Cir. Bras.. Publicado em: 2014-06
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29. Dynamics of the interaction between body fluid and Ti cp: the influence of surface functionalization in the first stages of osseointegration
INTRODUCTION: Regenerative therapies using biomaterials require accurate information on interactions between the implanted material and the human body. To improve the process of bone regeneration it is necessary to obtain a better understanding of the influence of the surfaces on the early stages of osseointegration. This work aims to investigate the dynamic
Rev. Bras. Eng. Bioméd.. Publicado em: 2014-03
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30. Comparison of total hip arthroplasty in osteoarthritis of mechanical and rheumatologic causes
Objective: To compare the use of uncemented implants in total hip arthroplasty in patients with rheumathologic diseases and mechanical osteoarthrosis. Methods: We retrospectively evaluated 196 patients who were operated by the Hip and Arthroplasty Surgery Group of the IOT-HCFMUSP between 2005 and 2009. Patients were divided into two groups: mechanical
Acta ortop. bras.. Publicado em: 2014
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31. Experimental study on penetration of dental implants into the maxillary sinus in different depths
The exposing of dental implant into the maxillary sinus combined with membrane perforation might increase risks of implant failure and sinus complications. Objective: The purpose of this study was to investigate the effects of the dental implant penetration into the maxillary sinus cavity in different depths on osseointegration and sinus health in a dog mo
J. Appl. Oral Sci.. Publicado em: 2013-12
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32. Proliferation of human periodontal ligament mesenchymal cells on polished and plasma nitriding titanium surfaces
AIM: To evaluate the proliferative capacity of mesenchymal cells derived from human periodontal ligament on polished and plasma-treated titanium surfaces. METHODS: Eighteen titanium disks were polished and half of them (n=9) were submitted to plasma nitriding using the cathodic cage technique. Mesenchymal cells were isolated from periodontal ligament of impa
Braz. J. Oral Sci.. Publicado em: 2013-06
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33. In vitro biomineralization of a novel hydroxyapatite/superhydrophilic multiwalled carbon nanotube nanocomposite using simulated body fluids
Nanobiomaterials based on superhydrophilic vertically-aligned multi-walled carbon nanotubes (VAMWCNT-O2) are promising for their properties and bone tissue biocompatibility. VAMWCNT-O2 films with nanohydroxyapatite (nHAp) aim to improve mechanical properties and biocompatibility of this new nanocomposite due to its resemblance to bone matrix structure. This
Mat. Res.. Publicado em: 08/03/2013
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34. Microtopografia de implantes de titânio com diferentes tratamentos de superfícies à microscopia eletrônica de varredura e de força atômica / Microtopography of titanium implants with different surface treatments scanning in electronic microscopy and atomic force microscopy
Introduction: Bone-implant interface quality may be influenced by surface roughness and determines how cells interact, cling to and fix to, therefore can enhance and shorten the time for osseointegration. This study aims to analyze qualitatively the topography and architecture of different dental implants surfaces, to compare and describe them. MATERIALS AND
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2012
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35. Produção e caracterização de implantes nanotexturizados de titânio associado a liberação gradual de fármacos
The aim of this study was to assess, in vivo, the effect of two different surface treatments of titanium implants - plasma-spray (PSA) and nano-textured plasma-spray (PSA-nano) - at the bone-to-implant interface (osseointegration), associated or not to the recombinant human growth hormone (rhGH). Twenty-four prototypes of pure titanium implants, 6-mm long an
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2012
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36. Estudo in vitro e in vivo da osseointegração de implantes de titânio com superfícies biomimetizadas / In Vitro and in vivo study of the osseointegration of titanium with biomimetics surfaces
As pesquisas realizadas com implantes procuram melhorar a qualidade dos produtos com o objetivo de reduzir o tempo de espera após a cirurgia para submeter os implantes às cargas mastigatórias com segurança. Para atender esta expectativa deve-se considerar que o organismo tem um tempo mínimo para realizar as reações que levam à osseointegração. O pr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012