Effect of tongue position on masseter and temporalis electromyographic activity during swallowing and maximal voluntary clenching: A cross-sectional study

C. Valdés, F. Astaburuaga, D. Falace, Valeria Ramírez, Arturo Ernesto Manns Freese

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The purpose of this study was to measure and compare the tonic electromyographic (EMG) activity of the temporalis and masseter muscles following placement of the tongue either on the palate or in the floor of the mouth during swallowing and maximal voluntary clenching (MVC). Thirty healthy dental students with natural dentition and bilateral molar support, between the ages of 18 and 22, with no prior history of oro-facial injury, or current or past pain in the jaw, mouth or tongue participated in the study. Tonic masseter and temporalis EMG activities were recorded using surface electrodes. Subjects were instructed to passively place the tongue either on the anterior hard palate or in the floor of the mouth during swallowing and MVC. At each tongue position, the resulting EMG was recorded. During swallowing, no significant difference in EMG activity was found either for the masseter (P-value = 0·1592) or the temporalis (P-value = 0·0546) muscles, regardless of the tongue position. During MVC, there was a statistically significant difference for both the masseter (P-value = 0·0016) and the temporalis (P-value = 0·0277) muscles with lower levels recorded with the tongue in the floor of the mouth. This study found that in normal, pain-free subjects, placing the tongue in the floor of the mouth significantly reduces masticatory muscle activity during MVC. Thus, it may be considered as a possible therapeutic option to decrease masticatory muscle activity; however, further research is needed in patients with oro-facial pain.

Original languageEnglish
Pages (from-to)881-889
Number of pages9
JournalJournal of Oral Rehabilitation
Volume41
Issue number12
DOIs
StatePublished - 1 Dec 2014

Bibliographical note

Publisher Copyright:
© 2014 John Wiley & Sons Ltd.

Keywords

  • Biofeedback
  • Bruxism
  • Deglutition
  • Electromyography
  • Psychology
  • Temporomandibular joint disorder

Fingerprint Dive into the research topics of 'Effect of tongue position on masseter and temporalis electromyographic activity during swallowing and maximal voluntary clenching: A cross-sectional study'. Together they form a unique fingerprint.

Cite this