Fabrication of porous titanium implants with biomechanical compatibility

Chen, Y.J.; Feng, Bo; Zhu, Yunpeng; Weng, Jie; Wang, J.X.; Li, Xiong

doi:10.1016/j.matlet.2009.09.029

Cited by 88 publications

(46 citation statements)

References 15 publications

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“…Therefore, porous Ti seemed to be a viable candidate for use in dental and biomedical applications, such as implants and tissue-engineering scaffolds [3][4][5][6][7] . Methods used to produce porous bulk Ti included loose powder sintering, gelcasting, and slurry foaming 6,8,9) . However, these traditional fabrication methods exhibit limitations in the production of complex three-dimensional (3D) structures.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of porous titanium implants by three-dimensional printing and sintering at different temperatures

2012

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This study evaluated the feasibility of using three-dimensional printing (3DP) to fabricate porous titanium implants. Titanium powder was blended with a water-soluble binder material. Green, porous, titanium implants fabricated by 3DP were sintered under protective argon atmosphere at 1,200, 1,300, or 1,400°C. Sintered implant prototypes had uniform shrinkage and no obvious shape distortion after sintering. Evaluation of their mechanical properties revealed that titanium prototypes sintered at different temperatures had elastic modulus of 5.9-34.8 GPa, porosity of 41.06-65.01%, hardness of 115.2-182.8 VHN, and compressive strength of 81.3-218.6 MPa. There were significant differences in each type of these data among the different sintering temperatures (p<0.01). Results of this study confirmed the feasibility of fabricating porous titanium implants by 3DP: pore size and pore interconnectivity were conducive to bone cell ingrowth for implant stabilization, and the mechanical properties matched well with those of the human bone.

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Section: Introductionmentioning

confidence: 99%

Fabrication of porous titanium implants by three-dimensional printing and sintering at different temperatures

2012

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“…Sabemos que un implante demasiado rígido puede producir un estrés local secundario, que contribuya a medio-largo plazo a una osteopenia, al contrarrestarse los estímulos necesarios para un correcto remodelado óseo 24,25 . No obstante, cuando ese implante se va a utilizar como medio de transferencia de información para posicionar un fragmento osteotomizado, este debería ser rígido, o con una capacidad de recuperación elástica a la deformación elevada, para no introducir errores durante la cirugía.…”

Section: Discussionunclassified

Guías y miniplacas personalizadas: un protocolo guiado para cirugía ortognática

Prol

Franco

Carlos

et al. 2017

Revista Española de Cirugía Oral y Maxilofacial

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“…• A pore size greater than 100 µm to facilitate bone colonization (Shiomi et al, 2004;Xue et al, 2007 ;Chen et al, 2009) .…”

Section: Criteria For Elementary Pattern Definitionmentioning

confidence: 99%

“…Xue et al (2007) demonstrated that the bone colonization is impossible for a pore size under 100 µm . 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 .…”

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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Fabrication of porous titanium implants with biomechanical compatibility

Cited by 88 publications

References 15 publications

Fabrication of porous titanium implants by three-dimensional printing and sintering at different temperatures

Fabrication of porous titanium implants by three-dimensional printing and sintering at different temperatures

Guías y miniplacas personalizadas: un protocolo guiado para cirugía ortognática

Development and mechanical characterization of porous titanium bone substitutes

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