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Clinical Oral Investigations
Published in: Clinical Oral Investigations 9/2019

01-09-2019 | Bruxism | Original Article

Smartphone-assisted monitoring of masticatory muscle activity in freely moving individuals

Authors: Sabarinath Prasad, Michael Paulin, Richard D. Cannon, Sandro Palla, Mauro Farella

Published in: Clinical Oral Investigations | Issue 9/2019

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Abstract

Objectives

To test a smartphone-assisted wireless device for assessing electromyographic (EMG) activity of the masseter muscle in freely moving individuals undertaking routine activities.

Materials and Methods

EMG activity was detected unilaterally from the masseter muscle in 12 volunteers using surface electrodes connected to both a smartphone-assisted wireless EMG device and a fixed-wired EMG equipment (reference standard). After performing a series of standardized tasks in the laboratory, participants wore the wireless device for 8 h while performing their normal routine.

Results

The wireless device reliably detected masseter muscle contraction episodes under both laboratory and natural environment conditions. The intraclass correlation coefficients for the muscle contraction episode amplitude and duration detected by the wireless and the wired equipment ranged from 0.94–1.00 to 0.82–1.00, respectively. Most masseter contraction episodes during normal routine were of low amplitude (< 10% MVC) and short duration (< 10 s), with no significant differences between sexes or facial side.

Conclusions

Within the limitations of the study, smartphone-assisted monitoring of the jaw muscles represents a promising tool to investigate oral behavior patterns in free moving individuals.

Clinical relevance

Smartphone-assisted monitoring of masticatory muscle activity may enable possible associations between excessive muscle activity, bruxism, dysfunction, and pain to be investigated, and managed via biofeedback.
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Metadata
Title
Smartphone-assisted monitoring of masticatory muscle activity in freely moving individuals
Authors
Sabarinath Prasad
Michael Paulin
Richard D. Cannon
Sandro Palla
Mauro Farella
Publication date
01-09-2019
Publisher
Springer Berlin Heidelberg
Published in
Clinical Oral Investigations / Issue 9/2019
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-018-2785-3

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