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Braz J Otorhinolaryngol. 2014 Apr;80(2):138-45.

Amplitude and speed of masticatory movements in total laryngectomy patients.

[Article in English, Portuguese]

Author information

  • 1Departamento de Patologia, Universidade Federal de Pernambuco, Recife, PE, Brasil.
  • 2Departamento de Neuropsiquiatria, Universidade Federal de Pernambuco, Recife, PE, Brasil.
  • 3Departamento de Fonoaudiologia, Universidade Federal de Pernambuco, Recife, PE, Brasil.



Laryngectomy is a surgical procedure that aims to remove the hyoid bone and the larynx and its muscles; it is inferred that a destabilization of the hyoid-mandibular axis will occur, consequently changing chewing.


To characterize the amplitude and speed of chewing in laryngectomies and to compare them with two groups of non-laryngectomized individuals differentiated by age.


72 volunteers were divided into three groups: (A) 32 volunteers, mean age 22.3 years, 17 females; (B) 20 volunteers, mean age 53.2 years, 10 females, and (C) 20 volunteers who underwent total laryngectomy, mean age 61.5 years, one female. Electrognathography, a method that tracks and measures millimeter jaw movements, was used for evaluation.


Significant differences were observed between groups A and C in masticatory amplitude and speed.


Age, and adaptive and compensatory changes appear to explain chewing better than factors related to total laryngectomy.

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