Physically Based Finite Element Model of the Face
The proposed 3D finite element model of the face aims at a faithful representation of the anatomy, the mechanical interactions between different tissues, and the non linear force deformation characteristics of tissues. Bones and soft tissues were reconstructed from magnetic resonance images. Non linear constitutive equations are implemented in the numerical model. The corresponding model parameters were selected according to previous work with mechanical measurements on soft facial tissue. Model assumptions concerning tissues geometry, mechanical properties and boundary conditions were validated through comparison with measurements of the facial tissue response to gravity loads and to the application of a pressure inside the oral cavity. In particular, parametric studies were carried out in order to quantify the influence of constitutive model parameters of muscles. The model described in this paper might be used for simulation of plastic and reconstructive surgery and for investigation of the physiology and pathology of face deformation.
KeywordsFace numerical modeling validation constitutive equations muscles
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- 9.Zachow, S., Gladilin, E., Hege, H.C., Deuflhard, P.: Towards patient specific, anatomy based simulation of facial mimics for surgical nerve rehabilitation. In: CARS 2002: Computer assisted radiology and surgery, Paris, France, pp. 3–6 (2002)Google Scholar
- 12.Barbarino G., Jabareen M., Trzewik J., Stamatas G., Mazza E., Development and validation of a 3D finite element model of the face. J Biomech. Eng. (submitted) Google Scholar
- 14.Duck, F.A.: Physical properties of tissue, a comprehensive reference book. Academic Press, London (1990)Google Scholar
- 15.Malinauskas, M., Krouskop, T.A., Barry, P.A.: Noninvasive measurement of the stiffness of tissue in the above knee amputation limb. J. Rehab Res. Dev. 26(3), 45–52 (1989)Google Scholar
- 17.Papazoglou, S., Rump, J.R., Braun, J., Sack, I.: Shear Wave group velocity inversion in MR elastography of human skeletal muscle. J. Magn. Res. Imag. 56, 489–497 (2006)Google Scholar
- 20.Hirsch, S., Frey, S., Thelen, A., Ladriere, N., Hering, P.: Facial topometry using pulsed holography. In: Proc. 7th Int. Symp. Display Holography, St. Asaph, Wales (2006)Google Scholar