Effect of laterotrusive occlusal scheme on chewing duration, external intercostal muscular activity, heart rate, and oxygen saturation

Rodolfo Miralles*, Saúl Valenzuela, Camila Marambio, Natalia Andrea Gamboa, Aler Daniel Fuentes, Hugo Santander, Mario Felipe Gutiérrez, Claudia Zúñiga, Ricardo Bull

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To evaluate the effect of the laterotrusive occlusal scheme on chewing duration, external intercostal (EIC) electromyographic (EMG) activity, heart rate (HR), and oxygen saturation (OS) during different tasks in the upright seated position. Methods: Fifty young participants, 25 with canine guidance and 25 with group function, were included. Chewing duration, bilateral EIC EMG activity, HR, and OS were recorded during the following tasks: 1) chewing until swallowing threshold; 2) laterotrusive teeth grinding. Results: Chewing duration, bilateral EIC EMG activity, HR, and OS showed no significant differences between the two laterotrusive occlusal schemes during the tasks studied. Conclusion: These results suggest that chewing duration, EIC muscle activity, HR, and OS were not significantly influenced by the laterotrusive occlusal scheme. Therefore, when a modification of the laterotrusive occlusal scheme is needed during oral rehabilitation or orthodontic treatment, canine guidance or group function should not significantly change EMG activity of EIC muscles.

Original languageEnglish
JournalCranio - Journal of Craniomandibular Practice
DOIs
StateAccepted/In press - 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2020, © 2020 Taylor & Francis Group, LLC.

Keywords

  • Canine guidance
  • chewing
  • electromyography
  • group function
  • heart rate
  • oxygen
  • saturation
  • teeth grinding

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