TY - GEN A1 - Kober, Cornelia A1 - Erdmann, Bodo A1 - Hellmich, Christian A1 - Sader, Robert A1 - Zeilhofer, Hans-Florian T1 - Anisotropic Simulation of the Human Mandible N2 - We focus on the role of anisotropic elasticity in the simulation of the load distribution in a human mandible due to a lateral bite on the leftmost premolar. Based on experimental evidence, we adopt ``local''" orthotropy of the elastic properties of the bone tissue. Since the trajectories of anisotropic elasticity are not accessible from Computer Tomographic (CT) data, they will be reconstructed from (i) the organ's geometry and (ii) from coherent structures which can be recognized from the spatial distribution of the CT values. A sensitivity analysis comprising various 3D FE simulations reveals the relevance of elastic anisotropy for the load carrying behavior of a human mandible: Comparison of the load distributions in isotropic and anisotropic simulations indicates that anisotropy seems to ``spare''" the mandible from loading. Moreover, a maximum degree of anisotropy leads to kind of an load minimization of the mandible, expressed by a minimum of different norms of local strain, evaluated throughout the organ. Thus, we may suggest that anisotropy is not only relevant, but also in some sense ``optimal''. T3 - ZIB-Report - 04-12 KW - anisotropy KW - elasticity KW - bony organ simulation KW - human mandible KW - visualization of tissue quality KW - finite element analysis Y1 - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0297-zib-7873 ER - TY - JOUR A1 - Hellmich, Christian A1 - Kober, Cornelia A1 - Erdmann, Bodo T1 - Micromechanics-based conversion of CT data into anisotropic elasticity tensors, applied to FE simulations of a mandible JF - Annals of Biomedical Engineering Y1 - 2008 U6 - https://doi.org/10.1007/s10439-007-9393-8 VL - 36 IS - 1 SP - 108 EP - 122 ER - TY - CHAP A1 - Kober, C. A1 - Erdmann, Bodo A1 - Hellmich, Christian A1 - Geiger, M. A1 - Sader, Robert A1 - Zeilhofer, Hans-Florian ED - Davidovitch, Z. ED - Mah, J. ED - Suthanarak, S. T1 - How does the periodontal ligament influence overall stress/strain profiles of a partially edentulous mandible? T2 - Proc. of 8th Int. Conference on Biological Mechanisms of Tooth Eruption, Resorption and Movement, Phuket, Thailand Y1 - 2005 CY - Harvard Society of the Advancement of Orthodontics, Boston, Massachusetts, USA ER - TY - CHAP A1 - Kober, C. A1 - Erdmann, Bodo A1 - Hellmich, Christian A1 - Sader, Robert A1 - Zeilhofer, Hans-Florian T1 - Anisotropic Simulation of the Human Mandible T2 - Proc. of 17th ASCE Engineering Mechanics Conference Y1 - 2004 PB - Univ. of Delaware ER - TY - CHAP A1 - Kober, C. A1 - Erdmann, Bodo A1 - Hellmich, Christian A1 - Sader, Robert A1 - Zeilhofer, Hans-Florian ED - Boenick, U. ED - Bolz, A. T1 - Consideration of Bone Inhomogeneity and Anisotropy in Deformation Analysis of a Human Mandible T2 - Proc. of BMT2005, 39th Annual Congress of the German Society of Biomedical Engineering, Nuremberg, Germany Y1 - 2005 VL - 1 SP - 814 EP - 815 PB - VDE CY - Nuremberg, Germany ER - TY - JOUR A1 - Kober, C. A1 - Stübinger, S. A1 - Erdmann, Bodo A1 - Hellmich, Christian A1 - Radtke, Thomas A1 - Sader, Robert A1 - Zeilhofer, Hans-Florian T1 - Finite element simulation of the human mandible JF - Int. Poster J. Dent. Oral Med. Y1 - 2006 ER - TY - JOUR A1 - Kober, C. A1 - Stübinger, S. A1 - Erdmann, Bodo A1 - Hellmich, Christian A1 - Radtke, Thomas A1 - Sader, Robert A1 - Zeilhofer, Hans-Florian T1 - Finite element simulation of the human mandible JF - Int. Poster J. Dent. Oral Med. Y1 - 2006 ER - TY - CHAP A1 - Kober, C. A1 - Erdmann, Bodo A1 - Hellmich, Christian A1 - Sader, Robert A1 - Zeilhofer, Hans-Florian ED - CADFEM GmbH, Grafing T1 - The Influence of the Periodontal Ligament on Overall Stress/Strain Profiles of a Human Mandible T2 - Proc. of 23rd CADFEM Users’ Meeting, Int. Congress on FEM Technology, Biomechanics Y1 - 2005 SP - 1 EP - 10 CY - Bonn, Germany ER - TY - JOUR A1 - Kober, C. A1 - Erdmann, Bodo A1 - Hellmich, Christian A1 - Sader, Robert A1 - Zeilhofer, Hans-Florian T1 - Consideration of anisotropic elasticity minimizes volumetric rather than shear deformation in human mandible JF - Comp. Meth. Biomech. Biomed. Eng. Y1 - 2006 VL - 9(2) SP - 91 EP - 101 ER - TY - JOUR A1 - Kober, C. A1 - Erdmann, Bodo A1 - Hellmich, Christian A1 - Sader, Robert A1 - Zeilhofer, Hans-Florian T1 - Validation of interdependency between inner structure visualization and structural mechanics simulation JF - Int. Poster J. Dent. Oral Med. Y1 - 2006 ER - TY - JOUR A1 - Kober, C. A1 - Erdmann, Bodo A1 - Hellmich, Christian A1 - Sader, Robert A1 - Zeilhofer, Hans-Florian T1 - Validation of interdependency between inner structure visualization and structural mechanics simulation JF - Int. Poster J. Dent. Oral Med. Y1 - 2006 ER -