Title
Effect of contingent electrical stimulation on jaw muscle activity during sleep: A pilot study with a randomized controlled trial design
Date Issued
01 September 2013
Access level
metadata only access
Resource Type
journal article
Author(s)
Aarhus University
Abstract
Objective. To determine the effect of contingent electrical stimulation (CES) on jaw muscle activity during sleep in a double-blinded randomized controlled trial (RCT). Materials and methods. Eleven patients with myofascial TMD (mean age 37 years) and with a clinical diagnosis of bruxism were included. EMG activity (Grindcare®) was recorded from the anterior temporalis muscle during sleep and analyzed online. Jaw muscle activity related to clenching or grinding triggered an electrical square-wave pulse train (450 ms) adjusted to a clear, but non-painful intensity. TMD patients were randomized into two groups: active treatment with CES or no CES (placebo). Number of EMG episodes/hour sleep was the primary outcome parameter. The following variables were assessed as secondary outcome parameters; number of painful muscles, maximum pain-free jaw opening, characteristic pain intensity, depression scores and Oral Health Impact Profile scores. Numerical Rating Scale scores for self-reported pain and muscle tension were registered for at least 4 nights per week during the experiment. Results. The number of EMG episodes/hour sleep was significantly reduced (52 ± 12%) in the CES group during the sessions with CES (ANOVA: p = 0.021) compared to baseline. There were no significant differences in the secondary outcome parameters (ANOVA: p > 0.513) or pain or muscle tension scores between groups (p = 0.645). The average duration of sleep hours during the nights with and without CES was not significantly different (p = 0.646). Conclusions. These results demonstrate a significant inhibitory effect of CES on jaw muscle EMG activity during sleep in a RCT, but with no effects on self-reported pain. © 2013 Informa Healthcare.
Start page
1050
End page
1062
Volume
71
Issue
5
Language
English
OCDE Knowledge area
Odontología, Cirugía oral, Medicina oral
Subjects
Scopus EID
2-s2.0-84883571610
PubMed ID
Source
Acta Odontologica Scandinavica
ISSN of the container
00016357
Sources of information:
Directorio de Producción Científica
Scopus