A dynamic model of jaw and hyoid biomechanics during chewing

Hannam, A.G.; Stavness, Ian; Lloyd, John E.; Fels, Sidney

doi:10.1016/j.jbiomech.2007.12.001

Cited by 94 publications

(74 citation statements)

References 47 publications

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“…We focused specifically on the lip gestures as a prototypical case. Toward this aim, we used a sophisticated realistic 3D biomechanical model of the whole orofacial motor plant including the jaw, the tongue and the face (Hannam et al, 2008;Buchaillard et al, 2009;Nazari et al, 2010;Stavness et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

“…The model had been previously adapted to the speaker's CT data using a segmentation of the interior bone surface and the exterior skin surface (Bucki et al, 2010). The reference jawtongue-hyoid bone model (Stavness et al, 2011) combined and registered two reference models to the same CT dataset: a 3D rigid-body jaw-hyoid bone model (Hannam et al, 2008) and a 3D FE tongue model (Gerard et al, 2006;Buchaillard et al, 2009). …”

Section: Modelmentioning

confidence: 99%

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A Biomechanical Modeling Study of the Effects of the Orbicularis Oris Muscle and Jaw Posture on Lip Shape

Stavness

Nazari

Perrier

et al. 2013

J Speech Lang Hear Res

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Method: Our methodology is based on computer simulations with a sophisticated biomechanical model coupling the jaw, tongue and face. First, the influence of Orbicularis Oris (OO) muscle geometry is analyzed. We assessed how changes to the OO anatomical implementation, in terms of depth (from epidermis to the skull) and peripheralness (proximity to the lip horn center), affected lip protrusion, lip spreading and lip area. Second, we evaluated the capability of the lip/jaw system to generate protrusion and rounding, or labial closure for different jaw heights.Results: (1) A highly peripheral and moderately deep OO implementation is most appropriate for achieving protrusion and rounding; (2) a superficial implementation facilitates closure; (3) protrusion and rounding requires a high jaw position; (4) labial closure is achievable for various jaw heights.Conclusions: Our results provide a quantitative assessment of how physical characteristics of the speech motor plant can determine regularities and variability in speech articulations across humans and over time.

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Section: Discussionmentioning

confidence: 99%

Section: Modelmentioning

confidence: 99%

A Biomechanical Modeling Study of the Effects of the Orbicularis Oris Muscle and Jaw Posture on Lip Shape

Stavness

Nazari

Perrier

et al. 2013

J Speech Lang Hear Res

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“…Por tanto, algunas de las divergencias evidenciadas entre las mandíbulas de las dos muestras examinadas, podrían ser el resultado del tipo, incidencia y magnitud de las fuerzas masticatorias ejercidas y de las consecuentes y sucesivas adaptaciones o compensaciones biológicas del propio sistema (MacDonald & Hannam, 1984;Kaifu;Jiménez et al;Röhrle & Pullan;Hannam et al, 2008;Scott et al, 2009;Grine et al, 2010;Zaffaroni Piaggio & Fiorestti).…”

Section: Discussionunclassified

Comparación Antropométrica entre Mandíbulas de las Poblaciones Uruguaya y Brasileña

et al. 2012

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RESUMEN:Las mandíbulas humanas pertenecientes a la población uruguaya presentan ciertas diferencias anatómicas con las de la brasileña. Tal hecho parecería deberse a las particularidades raciales y étnicas de cada país. Este estudio examinó las características morfológicas de 100 mandíbulas de uruguayos y las cotejó con las correspondientes a idéntico número de piezas óseas de brasileños, por medio de trece mediciones estipuladas por Humphrey et al. (1999). Las variaciones significativas entre los valores promedios fueron determinadas mediante el test de Mann-Whitney (alfa=5%). Se constataron expresivas discrepancias entre algunas de las dimensiones analizadas, producto de las modificaciones de forma y estructura de las mandíbulas de ambos grupos. Las uruguayas exhibieron guarismos clara o ligeramente superiores en prácticamente todas las medidas realizadas, salvo en lo que respecta a la altura de la sínfisis (sutilmente mayores en sus homólogas brasileñas). Las divergencias más evidentes correspondieron a la altura de la incisura, altura de la rama y longitud mandibular, y las menos notorias al ancho mandibular, altura de la sínfisis y ancho bicoronoideo. Los factores que pueden haber inducido a las mismas resultan realmente profusos, incluyendo tanto a las adaptaciones funcionales del sistema estomatognático como a las biomecánicas, estimuladas por la diferente consistencia de la dieta, o la propia miscegenación.

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“…Building on our experience with the 3D jaw-hyoid [18] and the 3D tongue [9] models, we introduce here the first 3D jaw-tongue-hyoid dynamical model taking into account full coupling between the FEM tongue model and the jaw-hyoid bony structures. As described in Section 3, we depend on the various components of Artisynth to provide dynamic simulations of interactions due to muscle forces of the jaw-tongue-hyoid complex and contact phenomena such as tongue-palate collisions.…”

Section: Application To Jaw-tongue Dynamicsmentioning

confidence: 99%

“…As in the original model, each muscle's force capacity was a function of its cross-sectional area (see Table I in [9]), with force capacity distributed across fibers weighed by the volume of their surrounding elements. For the jaw-hyoid model, we started from a previously published model developed in ArtiSynth that has been used to simulate free jaw movements [52] and chewing [18]. The model included rigid-bodies for the skull, jaw, and hyoid bone, point-to-point Hill-type actuators for the jaw muscles, constraint surfaces for the temporomandibular joints, and planar unilateral constraints for teeth contact.…”

Section: Jaw-tongue-hyoid Modelmentioning

confidence: 99%

Coupled hard–soft tissue simulation with contact and constraints applied to jaw–tongue–hyoid dynamics

Stavness

Lloyd

Payan

et al. 2010

Numer Methods Biomed Eng

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International audienceWe present an open-source physical simulation system suitable for efficient modeling of anatomical structures composed of both hard and soft tissue components, interconnected by point-wise attachments, contact, and other constraints. Specific attention is paid to the computational formulation needed for the coupled simulation of rigid and deformable structures, and a constraint-based mechanism is described for attaching these together. As an application of this system, we then present a novel 3D dynamic model of the jaw-tongue-hyoid complex, consisting of an FEM model of the tongue, rigid jaw, and hyoid structures, point-to-point muscle actuators, and constraints for bite contact and the temporomandibular joints. Several simulations are presented showing combined jaw-tongue actions and demonstrating the effects of coupled jaw-tongue-hyoid dynamics

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A dynamic model of jaw and hyoid biomechanics during chewing

Cited by 94 publications

References 47 publications

A Biomechanical Modeling Study of the Effects of the Orbicularis Oris Muscle and Jaw Posture on Lip Shape

A Biomechanical Modeling Study of the Effects of the Orbicularis Oris Muscle and Jaw Posture on Lip Shape

Comparación Antropométrica entre Mandíbulas de las Poblaciones Uruguaya y Brasileña

Coupled hard–soft tissue simulation with contact and constraints applied to jaw–tongue–hyoid dynamics

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