4.7 Article

Electromyographic Assessment of Masseter Muscle Activity: A Proposal for a 24 h Recording Device with Preliminary Data

期刊

JOURNAL OF CLINICAL MEDICINE
卷 12, 期 1, 页码 -

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MDPI
DOI: 10.3390/jcm12010247

关键词

awake bruxism; sleep bruxism; bruxism; masseter muscle activity; electromyographic assessment; diagnosis

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The study introduces a novel EMG device for the assessment of awake and sleep bruxism in the home environment over 24 hours. The device accurately measures the duration of different phases of bruxism activity and calculates bruxism indices for awake and sleep periods. This advanced EMG recording device provides valuable insights into the epidemiology of bruxism and offers guidance for tailored management.
Objective: The instrumental measurement of electromyographic (EMG) activity in the natural environment is the best strategy available to collect information on bruxism. The twofold aim of this study was to (1) introduce and discuss a novel EMG device for the assessment of awake (AB) and sleep bruxism (SB) in the home environment over 24 h and (2) present some preliminary data. Methods: Fifteen healthy volunteers (eight males and seven females; mean age: 48.2 +/- 4.1 years) underwent 24 h EMG recording trials of their masseter muscle activity (MMA) with a miniaturized wireless device. This device allowed us to measure the durations of the different phases of the recordings (total duration, awake time, sleep time, and electrode dislodgement time) as well as the bruxism time index (BTI) and bruxism work index (BWI) for both the waking and sleeping hours. Results: For the healthy volunteers, on average, the bruxism work index (BWI) values were 0.4 +/- 0.2 and 0.1 +/- 0.1 for awake and sleep, respectively, while the mean bruxism time index (BTI) values were 0.9 +/- 0.5 for awake and 0.3 +/- 0.1 for sleep. Conclusions: This investigation describes the technical features of a novel EMG recording device that permits the evaluation of masseter muscle activity in the home environment over 24 h. For the first time, a dedicated elaboration of the EMG signal allowed an assessment of muscle work and not just a count of purported SB/EMG events. Clinical significance: Based on the multidisciplinary approach in the study of bruxism, such a methodology, thanks to its peculiar features, will allow researchers and clinicians to monitor the epidemiology of MMA and delve deeper into the awake and sleep bruxism correlates for tailored management in clinical settings.

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