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- Title
Relationship between masseter muscle activity during wakefulness and temporomandibular disorder‐related symptoms.
- Authors
Maeda‐Iino, Aya; Osako, Yuki; Nakagawa, Shoko; Takahashi, Kotaro; Oga, Yasuhiko; Furukawa‐Sainoki, Minami; Harada, Marina; Fukushima, Mika; Miyawaki, Shouichi
- Abstract
Background: Masseter muscle activity during wakefulness may be associated with temporomandibular disorder (TMD)‐related symptoms, psychosocial status and pain‐related disability; however, this relationship is unclear. Objectives: This study aimed to determine the relationship between masseter muscle electromyography (EMG) burst/duration during wakefulness and TMD‐related symptoms, psychosocial status and pain‐related disability. Methods: Sixty participants were assessed masseter muscle activity during wakefulness using a data‐logger‐type ultraminiature EMG system and TMD‐related symptoms, psychosocial status and pain‐related disability through Axis I and II of the diagnostic criteria for TMD (DC/TMD). EMG bursts lasting longer than 0.25 s but less than 2.0 s and those lasting longer than 2.0 s were classified as phasic and tonic bursts, respectively. Results: Participants with palpation‐related pain in the temporalis and masseter muscles, as assessed through the DC/TMD examination form in Axis I, had more bursts (number/h) (p =.035 and p =.009, respectively) and longer duration (time/h) (p =.013 and p =.004, respectively) of tonic bursts of the masseter muscle during wakefulness. Participants with palpation‐related pain in the masseter muscles had higher oral behaviour scores during wakefulness using Axis II (p =.001), which affected the number and duration of tonic bursts of the masseter muscle activity during wakefulness (p =.011 and p =.007, respectively). Conclusion: As tonic bursts mainly reflect clenching, individuals with pain in the masseter muscles by palpation may have a high frequency and longer duration of clenching, as well as a high frequency of oral behaviours during wakefulness.
- Subjects
CHRONIC pain; FUNCTIONAL status; MASSETER muscle; DISABILITY evaluation; DESCRIPTIVE statistics; RESEARCH funding; WAKEFULNESS; TEMPOROMANDIBULAR disorders; ELECTROMYOGRAPHY; DATA analysis software; BRUXISM; SYMPTOMS; DISEASE complications
- Publication
Journal of Oral Rehabilitation, 2024, Vol 51, Issue 3, p455
- ISSN
0305-182X
- Publication type
Article
- DOI
10.1111/joor.13617