Coupled Biomechanical Modeling of the Face, Jaw, Skull, Tongue, and Hyoid Bone
The tissue scale is an important spatial scale for modeling the human body. Tissue-scale biomechanical simulations can be used to estimate the internal muscle stresses and bone strains during human movement, as well as the distribution of force in muscles with complex internal architecture and broad insertion areas. Tissue-scale simulations are of particular interest for muscle structures where the changes in the shape of the structure are functionally important, such as the face, tongue, and vocal tract. Biomechanical modeling of these structures has potential to improve our understanding of orofacial physiology in respiration, mastication, deglutition, and speech production. Biomechanical simulations of the face and vocal tract pose a challenging engineering problem due to the tight coupling of tissue dynamics between numerous structures: the face, lips, jaw, skull, tongue, hyoid bone, soft palate, pharynx, and larynx. In this chapter, we describe our efforts to develop novel tissue-scale modeling and simulation techniques targeted to orofacial anatomy. We will also review our efforts to apply such simulations to reveal the biomechanics underlying orofacial movements.
KeywordsFinite-element method Musculoskeletal modeling Speech production Orofacial modeling Lips Orbicularis oris
We gratefully thank Pierre Badin at Gipsa-Lab Grenoble for providing the CT data used for subject specific morphology. We also thank Poul Nielson and collaborators at the Auckland Bioengineering Institute for their assistance with the subject-specific material properties experiments. We also thank ANSYS for making licenses available. Funding for this work has been provided by the Natural Science and Engineering Research Council of Canada and the Michael Smith Foundation for Health Research.
- 4.Sifakis, E., Neverov, I., & Fedkiw, R. (2005). Automatic determination of facial muscle activations from sparse motion capture marker data. In ACM Transactions on Graphics (TOG), ACM (Vol. 24, pp. 417–425).Google Scholar
- 5.Hung, A. P. L., Wu, T., Hunter, P., & Mithraratne, K. (2011). Simulating facial expressions using anatomically accurate biomechanical model. In SIGGRAPH Asia 2011 Posters, ACM, p. 29.Google Scholar
- 6.Gerard, J. M., Perrier, P., & Payan, Y. (2006). 3d biomechanical tongue modeling to study speech production. In Speech production: Models, phonetic processes, and techniques (pp. 85–102). New York: Psychology Press.Google Scholar
- 9.Nazari, M. A., Perrier, P., Chabanas, M., & Payan, Y. (2011). Shaping by stiffening: A modeling study for lips. Motor Control, 15(1), 141–168.Google Scholar
- 11.Flynn, C., Stavness, I., Lloyd, J. E., & Fels, S. (2013a). A finite element model of the face including an orthotropic skin model under in vivo tension. Computer Methods in Biomechanics and Biomedical Engineering (in press).Google Scholar
- 14.Beeler, T., Hahn, F., Bradley, D., Bickel, B., Beardsley, P., Gotsman, C., Sumner, R. W., & Gross, M. (2011). High-quality passive facial performance capture using anchor frames. In: ACM Transactions on Graphics (TOG), ACM (Vol. 30, p. 75).Google Scholar
- 25.Flynn, C., Taberner, A., Nielsen, P., & Fels, S. (2013). Simulating the three-dimensional deformation of in vivo facial skin. Journal of the Mechanical Behavior of Biomedical Materials, 28, 484–494.Google Scholar
- 26.Schiavone, P., Promayon, E., & Payan, Y. (2010). Lastic: A light aspiration device for in vivo soft tissue characterization. Lecture Notes in Computer Science, 5958, 1–10.Google Scholar
- 31.Rivlin R (1948) Large elastic deformations of isotropic materials. iv. Further developments of the general theory. Philosophical Transactions of the Royal Society of London Series A, Mathematical and Physical Sciences, 241(835), 379–397.Google Scholar
- 34.Lloyd, J. E., Stavness, I., Fels, S. (2012). ArtiSynth: A fast interactive biomechanical modeling toolkit combining multibody and finite element simulation. In Y. Payan (Ed.), Soft tissue biomechanical modeling for computer assisted surgery (Vol. 11, pp. 355–394). New York: Springer.Google Scholar
- 36.Stavness, I., & Kim, S. (2013). Towards a multi-compartment finite-element model of the supraspintus muscle (pp. 115–116). In Computer Methods in Biomechanics and Biomedical Engineering.Google Scholar