Structural, mechanical and in vitro characterization of individually structured Ti–6Al–4V produced by direct laser forming

Hollander, Dirk A.; Walter, Matthias; Wirtz, Tobias; Sellei, Richard Martin; Schmidt-Rohlfing, Bernhard; Paar, O; Erli, Hans-Josef

doi:10.1016/j.biomaterials.2005.07.041

Cited by 419 publications

(294 citation statements)

References 9 publications

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“…The proportion of papers presented on medical modelling fell in comparison to those focussed on direct implant production or XCT inspection and metrology, but a large number of studies furthered research during this time, a selection of which can be seen in references [1,[37][38][39][40][41][42][43][44]. This period showed a prevalence of the use of XCT in the design of various implants, summarised in a paper that detailed recent advances in production of tissue-engineering scaffolds [45].…”

Section: History 2005-2010mentioning

confidence: 99%

X-ray computed tomography and additive manufacturing in medicine: a review

Thompson

McNally

Maskery

et al. 2017

Int. J. Metrol. Qual. Eng.

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Abstract. The use of X-ray computed tomography (XCT) with additive manufacture (AM) within a medical context is examined in this review. The seven AM process families and various XCT scanning techniques are explained in brief, and the use of these technologies together is detailed over time. The transition of these technologies from a simple method of medical modelling to a robust method of customised implant manufacture is described, and the state-of-the-art for XCT and AM is examined in detail. XCT and AM are identified as having the potential to improve gold standards in both modelling and implant production, and in the conclusions of this review, primary barriers to the increased adoption of AM and XCT technologies are identified in reference to the main applications of XCT and AM technologies. The primary prohibitive factors generally relate to the cost of production across all of the examined applications, as well as the need for further clinical trials in surgical guidance and applications involving implantation.

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Section: History 2005-2010mentioning

confidence: 99%

X-ray computed tomography and additive manufacturing in medicine: a review

Thompson

McNally

Maskery

et al. 2017

Int. J. Metrol. Qual. Eng.

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“…Moreover, as demonstrated by many authors (Otsuki et al, 2006 ;Heinl et al, 2008 ;Xue et al, 2007 ;Hollander et al, 2006), the existence of porosity is also propitious for the substitute osseointegration, the essential factor of the longterm reliability of the implant . The question arises : do the size, shape, topology and volume fraction of voids have any influence on the substitute colonization?…”

Section: Introductionmentioning

confidence: 95%

“…Chen et al (2009) tested the osteogenesis on structures with pores ranging from 100 to 400 µm but did not speak out against higher pore dimensions . Hollander et al (2006) tested porous structure with pore dimensions of 500, 700 and 1000 µm and concluded that the growth of human osteoblast is possible for all these types of porosities . Those authors did not indicate a maximal pore size either.…”

Section: Introductionmentioning

confidence: 99%

Development and mechanical characterization of porous titanium bone substitutes

Barbas

Bonnet

Lipiński

et al. 2012

Journal of the Mechanical Behavior of Biomedical Materials

156

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Commercially Pure Porous Titanium (CPPTi) can be used for surgical implants to avoid the stress shielding effect due to the mismatch between the mechanica l properties of titanium and bone . Most researchers in this area deal with randomly distributed pores or simple architectures in titanium alloys. The control of porosity, pore size and distribution is necessary to obtain implants with mechanical properties close to those of bone and to ensure their osseointegration . The aim of the present work was therefore to develop and characterize such a specific porous structure. First of all, the properties of titanium made by Selective Laser Melting (SLM) were characterized through experimental testing on bulk specimens. An elementary pattern of the porous structure was then designed to mimic the orthotropic properties of the human bone following several mechanical and geometrical criteria . Finite Element Analysis (FEA) was used to optimize the pattern . A porosity of 53% and pore sizes in the range of 860 to 1500 µm were fi.nally adopted . Tensile tests on porous samples were then carried out to validate the properties obtained numerically and identify the failure modes of the sam_ples. Final!y, FE elasto_plastic ana!yses were yerformed on the porous samples in order to propose a failure criterion for the design of porous substitutes . .

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“…[37][38][39][40] Katmanlı üretim (additive manufacturing) metotları bu durumun üstesinden gelebilmek için önerilmiĢtir. [37][38][39][40][41] Katı serbest Ģekilli fabrikasyonu (solid freeform fabrication), tabakalı üretim (layered manufacturing) veya doğrudan dijital üretim (direct digital manufacturing) olarak da bilinen katmanlı üretim (additive manufacturing), üç boyutlu sanal model verileri doğrultusunda yapısı ve Ģeklinin tanımlanması ile direkt olarak fiziksel objeleri oluĢturmak için kullanılan bir stratejidir. [39][40][41] Özellikle katmanlı üretim, bilgisayar destekli tasarım (CAD) verilerinden veya bilgisayar destekli tıbbi görüntüleme teknolojilerinden sağlanan katmankatman Ģeklindeki verilerden, direkt olarak fiziksel modeli oluĢturabilen teknikleri içerir.…”

Section: öZunclassified

“…[37][38][39][40][41] Katı serbest Ģekilli fabrikasyonu (solid freeform fabrication), tabakalı üretim (layered manufacturing) veya doğrudan dijital üretim (direct digital manufacturing) olarak da bilinen katmanlı üretim (additive manufacturing), üç boyutlu sanal model verileri doğrultusunda yapısı ve Ģeklinin tanımlanması ile direkt olarak fiziksel objeleri oluĢturmak için kullanılan bir stratejidir. [39][40][41] Özellikle katmanlı üretim, bilgisayar destekli tasarım (CAD) verilerinden veya bilgisayar destekli tıbbi görüntüleme teknolojilerinden sağlanan katmankatman Ģeklindeki verilerden, direkt olarak fiziksel modeli oluĢturabilen teknikleri içerir. [39][40][41][42] Atatürk -192 Direkt metal lazer sinterleme (DMLS), toz metaller, radyant ısıtıcılar ve bilgisayar kontrollü lazer ile bir objenin tabaka tabaka oluĢturulmasını sağlayan lazer destekli katmanlı üretim tekniğidir.…”

Section: öZunclassified