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MeSH Review

Pterygoid Muscles

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High impact information on Pterygoid Muscles

  • Electromyographic (EMG) activities of the superior (SUP) and inferior heads (INF) of the lateral pterygoid muscle (LPT) were recorded in humans during voluntary stepwise changes in biting force and jaw position that were adopted to exclude the effects of acceleration and velocity of jaw movements on the muscle activity [1].
  • Subjects with large masseter and medial pterygoid muscle volumes had flat mandibular and occlusal planes, and small gonial angles [2].
  • OBJECTIVE: The minimal tonic firing rates (the lowest firing rates at which motor units fire regularly; MTFR) of single motor units (SMUs) within the lateral pterygoid muscle have not been widely investigated [3].
  • RESULTS: Functional 3-D reconstructions of the paratubal structures reveal that the medial pterygoid muscle is acting as a movable hypomochlion of the tensor veli palatini muscle [4].
  • A distinct slip of the medial pterygoid muscle was found to attach to the FTC which caused the lingual nerve to be sandwiched between this slip and the main bulk of the medial pterygoid as it inserts into the mandible [5].

Biological context of Pterygoid Muscles


Associations of Pterygoid Muscles with chemical compounds


Gene context of Pterygoid Muscles

  • An open approach, involving masseter, temporalis, and the medial pterygoid muscles, was utilized, followed by the use of scissors mouth props, Erich arch bars, and postoperative elastic traction [10].

Analytical, diagnostic and therapeutic context of Pterygoid Muscles


  1. EMG activities of two heads of the human lateral pterygoid muscle in relation to mandibular condyle movement and biting force. Hiraba, K., Hibino, K., Hiranuma, K., Negoro, T. J. Neurophysiol. (2000) [Pubmed]
  2. Relationship between jaw muscle volume and craniofacial form. Gionhaku, N., Lowe, A.A. J. Dent. Res. (1989) [Pubmed]
  3. Minimal tonic firing rates of human lateral pterygoid single motor units. Phanachet, I., Whittle, T., Wanigaratne, K., Murray, G.M. Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology. (2004) [Pubmed]
  4. The muscular compliance of the auditory tube: a model-based survey. Leuwer, R., Schubert, R., Kucinski, T., Liebig, T., Maier, H. Laryngoscope (2002) [Pubmed]
  5. Further evaluation of the superficial and deep tendons of the human temporalis muscle. Harn, S.D., Shackelford, L.S. Anat. Rec. (1982) [Pubmed]
  6. Diagnostic tests used in determining the role of the occlusion in temporomandibular joint disorders. Long, J.H. The Journal of prosthetic dentistry. (1991) [Pubmed]
  7. Comparison of phosphocreatine concentration in the human masseter and medial pterygoid muscles by 31P-CSI. Kanayama, T., Minowa, K., Inoue, N., Yamaguchi, T., Tamura, T., Yoshida, S., Kawasaki, T. Journal of oral rehabilitation. (2001) [Pubmed]
  8. Muscle-fibre architecture of the rat medial pterygoid muscle. Matsumoto, H., Katsura, S. Arch. Oral Biol. (1987) [Pubmed]
  9. Treatment of inferior lateral pterygoid muscle dystonia with zolpidem tartrate, botulinum toxin injections, and physical self-regulation procedures: a case report. Vazquez-Delgado, E., Okeson, J.P. Cranio : the journal of craniomandibular practice. (2004) [Pubmed]
  10. Traumatic chronic TMJ dislocation: report of an unusual case and discussion of management. Hoard, M.A., Tadje, J.P., Gampper, T.J., Edlich, R.F. The Journal of cranio-maxillofacial trauma. (1998) [Pubmed]
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