Engineering Mechanics

International Conference

Proceedings Vol. 22 (2016)


ENGINEERING MECHANICS 2016

22nd INTERNATIONAL CONFERENCE
May 9 – 12, 2016, Svratka, Czech Republic
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Editors: Igor Zolotarev and Vojtěch Radolf

Copyright © 2016 Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague

ISBN 978-80-87012-59-8 (printed)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

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ESTIMATION OF ORTHOTROPIC MECHANICAL PROPERTIES OF HUMAN ALVEOLAR BONE
Marcián P., Lošák P., Kaiser J., Borák L.
pages 399 - 402, full text

In computational simulations of biomechanical problems, cancellous bone has often been modeled as a homogeneous, linear isotropic or orthotropic continuum. However, a need for higher modeling level is topical when it comes to simulations related to the dental implantology. The purpose of this study is to analyze cancellous bone specimens from alveolar bone, to estimate their apparent mechanical properties (assuming linear orthotropy) and to discuss their applicability in computational simulations of dental implantology problems. For this purpose, four cancellous bone segments from the first premolar region of human mandible were scanned on μCT device and subsequently analyzed using methods of biomechanical finite element simulations. In combination with the standard equations of mechanics of materials for calculating beam stiffness, nine independent elastic constants of linear orthotropic material model were determined for all analyzed segments. The results confirmed that the elastic constants are strongly dependent on the quality of the analyzed segment and its topology. It was concluded that this type of material model should be used only in cases where the stresses and strains in the bone itself are not of main concern. Otherwise, the information about the histomorphometry data should be inseparable part of each such model.


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