Tongue and jaw muscle activity in response to mandibular rotations in a sample of normal and anterior open-bite subjects

Lowe, Alan A.; Johnston, Wilbur D.

doi:10.1016/0002-9416(79)90260-4

Cited by 49 publications

(27 citation statements)

References 18 publications

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“…The most important functional factors are deleterious oral habits, (Popovich and Thompson 1973;Mahalski and Stanton 1992;Johnson and Larson 1993) and oral breathing (Proffit and Mason 1975;Lowe and Johnston 1979;Harvold et al 1981;Linder-Aronson et al 1986;Nagahara et al 1996;Yashiro and Takada 1999). Some other factors may contribute in the environmental etiology such as traumatisms and pathologies (Prosterman et al 1995).…”

Section: Environmental Factorsmentioning

confidence: 99%

Etiology of Open‐Bite Malocclusion

Freitas¹,

Cançado²

2013

Open‐Bite Malocclusion

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Section: Environmental Factorsmentioning

confidence: 99%

Etiology of Open‐Bite Malocclusion

Freitas¹,

Cançado²

2013

Open‐Bite Malocclusion

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“…Jaw openings in human adults in the range of 4-6 mm elicit reproducible GG muscle activity which lasts as long as the jaw is held open [35], The amount of GG activity varies in proportion to the angular rotation of the mandible. Mean threshold levels for the GG muscle in re sponse to mandibular rotations in a sam ple of subjects with normal occlusions and anterior open-bite malocclusions have been quantified [31]. A significantly lower threshold was observed in the open-bite subjects and an observed tongue protru sion in response to jaw opening was docu mented.…”

Section: Clinical Postulatesmentioning

confidence: 95%

Tongue Movements – Brainstem Mechanisms and Clinical Postulates

Lowe¹

1984

Brain Behav Evol

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Specific excitatory and inhibitory influences on protrusive (P) and retrusive motoneurons in the hypoglossal nucleus of cat have been documented. Stimuli delivered to peripheral branches of the auriculotemporal nerve which innervate the temporomandibular joint activate both genioglossus (GG) single units and synaptically-evoked responses in P motoneurons. Similarly, stimuli delivered to the glossopharyngeal (IX) and superior laryngeal nerves activate P motoneurons. Any one of these three stimuli may contribute to the various responses in which the GG muscle is known to participate. In contrast, stimuli applied to the tongue itself (lingual and IX nerves) result in a retrusive tongue movement. These brainstem mechanisms suggest specific therapy regimens for the treatment of skeletal open-bite malocclusions where resting tongue posture appears to be a primary etiological factor.

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“…We expect reduced opening with jaw-tongue-hyoid model due to passive compression at floor-of-mouth. We also expect the tongue to passively protrude from the mouth during jaw opening [55], and require contact handling (see Section 3.6) between the tongue tip and the lower teeth.…”

Section: Jaw Movement Tasksmentioning

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

show abstract

Tongue and jaw muscle activity in response to mandibular rotations in a sample of normal and anterior open-bite subjects

Cited by 49 publications

References 18 publications

Etiology of Open‐Bite Malocclusion

Etiology of Open‐Bite Malocclusion

Tongue Movements – Brainstem Mechanisms and Clinical Postulates

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

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