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Mechanical stability of custom-made implants: Numerical study of anatomical device and low elastic Young's modulus alloy

Article dans une revue avec comité de lecture
Auteur
DIDIER, Paul
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
PIOTROWSKI, Boris
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
FISCHER, Marie
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
LAHEURTE, Pascal
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]

URI
http://hdl.handle.net/10985/16042
DOI
10.1016/j.msec.2016.12.031
Date
2017
Journal
Materials Science and Engineering: C

Résumé

The advent of new manufacturing technologies such as additive manufacturing deeply impacts the approach for the design of medical devices. It is now possible to design custom-made implants based on medical imaging, with complex anatomic shape, and to manufacture them. In this study, two geometrical configurations of implant devices are studied, standard and anatomical. The comparison highlights the drawbacks of the standard configuration, which requires a specific forming by plastic strain in order to be adapted to the patient’s morphology and induces stress field in bones without mechanical load in the implant. The influence of low elastic modulus of the materials on stress distribution is investigated. Two biocompatible alloys having the ability to be used with SLM additive manufacturing are considered, commercial Ti-6Al-4V and Ti-26Nb. It is shown that beyond the geometrical aspect, mechanical compatibility between implants and bones can be significantly improved with the modulus of Ti-26Nb implants compared with the Ti-6Al-4V.

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LEM3_MSEC_2017_PIOTROWSKI.pdf
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Documents liés

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  • Post-processing of additive manufactured parts: a numerical strategy applied in maxillary implantology 
    Article dans une revue avec comité de lecture
    DIDIER, Paul; LE COZ, Gael; ccPIOTROWSKI, Boris; BRAVETTI, Pierre; LAHEURTE, Pascal; MOUFKI, Abdelhadi (EDP Sciences, 2022-06)
    To obtain a functional part from additive manufacturing (AM) technologies, some surfaces require post-processing by machining. An approach is developed using additive manufacturing supports as a clamping device for the ...
  • A preliminary approach in the prediction of orthodontic bone remodeling by coupling experiments, theory and numerical models 
    Article dans une revue avec comité de lecture
    GEORGE, Daniel; WAGNER, Delphine; BOLENDER, Yves; LAHEURTE, Pascal; PIOTROWSKI, Boris; DIDIER, Paul; BENSIDHOUM, Morad; HERBERT, Valentin; SPINGARN, Camille; RÉMOND, Yves (Informa UK Limited, 2020)
    Orthodontic treatments are based on a prolonged application of mechanical forces on the teeth through orthodontic appliances, leading to tooth movement due to the remodeling of the surrounding bone. Bone response is dependent ...
  • A continuous crystallographic approach to generate cubic lattices and its effect on relative stiffness of architectured materials 
    Article dans une revue avec comité de lecture
    FAVRE, Julien; LOHMULLER, Paul; PIOTROWSKI, Boris; KENZARI, Samuel; LAHEURTE, Pascal; ccMERAGHNI, Fodil (Elsevier, 2018)
    This original work proposes to investigate the transposition of crystallography rules to cubic lattice architectured materials to generate new 3D porous structures. The application of symmetry operations provides a complete ...
  • Stress Concentration and Mechanical Strength of Cubic Lattice Architectures 
    Article dans une revue avec comité de lecture
    LOHMULLER, Paul; FAVRE, Julien; PIOTROWSKI, Boris; KENZARI, Samuel; LAHEURTE, Pascal (MDPI, 2018)
    The continuous design of cubic lattice architecture materials provides a wide range of mechanical properties. It makes possible to control the stress magnitude and the local maxima in the structure. This study reveals some ...
  • Architectural effect on 3D elastic properties and anisotropy of cubic lattice structures 
    Article dans une revue avec comité de lecture
    LOHMULLER, Paul; FAVRE, Julien; KENZARI, Samuel; PIOTROWSKI, Boris; PELTIER, Laurent; LAHEURTE, Pascal (Elsevier, 2019)
    This article investigates the elastic properties of a large panel of lattice architectures using a continuous description of geometry. The elastic constants of the orthotropic material are determined, and discussed in terms ...

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