Jaw muscle activity patterns in women with chronic TMD myalgia during standardized clenching and chewing tasks

Valentino, R.; Cioffi, Iacopo; Vollaro, Stefano; Cimino, Roberta; Baiano, Roberta; Michelotti, Ambrosina

doi:10.1080/08869634.2019.1589703

Cited by 16 publications

(44 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the current study, we recruited a group of healthy individuals regardless of their oral behaviors. Our findings are in line with previous investigations showing that mTMD is associated with increased masticatory muscle activity: 9,75,76 during the control no-music block (pink noise), the frequency of awake bruxism episodes and the average muscular effort of the masseter (EMG total ) were greater in women with mTMD compared to controls, and women with mTMD reported higher levels of oral behaviors than controls.…”

Section: Discussionsupporting

confidence: 93%

Music Modulates Awake Bruxism in Chronic Painful Temporomandibular Disorders

et al. 2020

Self Cite

View full text Add to dashboard Cite

Objective In this experimental study, we aimed to determine whether guided music listening (GML) – a music intervention based on models of mood mediation and attention modulation – modulates masticatory muscle activity and awake bruxism in subjects with chronic painful muscular temporomandibular disorders (TMD myalgia, mTMD), a condition causing a significant burden to patients, their families, and healthcare systems. Background Awake bruxism – a stress behavior characterized by clenching of the teeth – is a strong contributor to chronic mTMD. GML modulates psychological stress and motor responses and could thus reduce muscle activity in chronic musculoskeletal conditions, including mTMD. Methods We recorded the electromyographic (EMG) activity in the right masseter of 14 women with chronic (>6 months) mTMD (median [IQR] = 39.5.3 [24.3] years) and 15 pain‐free women (median [IQR] = 30.0 [3.5] years) during a GML session, including 3 music (stressful, relaxing, and participants' favorite music) and a no‐music (pink noise) control blocks, each lasting 15 minutes. We measured the motor effort of the right masseter relative to the participants' maximum voluntary contraction (MVC), the muscular effort to maintain mandibular posture (EMGposture), and to produce spontaneous awake bruxism episodes (EMGbruxism), and the duration and frequency of spontaneous awake bruxism episodes. We tested between‐group and within‐group (between blocks) differences, as well as the effect of the interaction group by experimental block on these outcome measures. Results In both groups, EMGposture was significantly affected by the interaction group by experimental block (P < .001). Compared to pink noise [mean (95% CI); mTMD: 2.2 (1.6‐2.8) %MVC; Controls: 1.1 (0.5‐1.7) %MVC], EMGposture increased during the stressful music block [contrast estimate (95% CI); mTMD: +0.8 (0.7‐0.8) %MVC; Controls: +0.3 (0.3‐0.4) %MVC; both P < .001], and decreased during the relaxing [mTMD: −0.4 (−0.5 to −0.4) %MVC; Controls: −0.3 (−0.4 to −0.3) %MVC; both P < .001] and favorite [mTMD: −0.5 (−0.6 to −0.5) %MVC; Controls: −0.5 (−0.5 to −0.4) %MVC; both P < .001] music blocks. EMGposture was greater in mTMD individuals than controls during the favorite music [contrast estimate (95% CI): +1.1 (0.2‐1.9) %MVC; P = .019] and the pink noise [+1.1 (0.2‐2.0) %MVC; P = .014] blocks. EMGbruxism was significantly affected by the interaction group by experimental block (P < .001). In mTMD participants, compared to the pink noise block [mean (95% CI); 23.8 (16.0‐31.6) %MVC], EMGbruxism increased during the stressful music block [contrast estimate (95% CI); +10.2 (8.6‐11.8) %MVC], and decreased during the relaxing [−6.2 (−8.1 to −4.3) %MVC; P < .001] and favorite [−10.2 (−12.2 to −9.1) %MVC; P < .001] music blocks. These effects were not observed in the control group [mean (95% CI); pink noise: 19.3 (10.9‐27.6); stressful: 21.2 (12.9‐29.4) %MVC; relaxing: 21.6 (13.3‐29.9) %MVC; favorite: 24.2 (15.8‐32.7) %MVC; all P > .05]. EMGbruxism was significantly greater in mTMD partici...

show abstract

Section: Discussionsupporting

confidence: 93%

Music Modulates Awake Bruxism in Chronic Painful Temporomandibular Disorders

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Schmid-Schwap et al [ 35 ] reported that females complained of TMD four times more often than did males, and that bruxism was more common in females. Many previous studies have obtained meaningful results from experiments only involving females, with most of these studies analyzing the associations between TMD, bruxism, and masticatory muscle activity under various conditions [ 36 - 40 ]. Other studies found that TMD symptoms and mandibular tori were much more common in young adults [ 41 , 42 ].…”

Section: Discussionmentioning

confidence: 99%

Association between masticatory muscle activity and oral conditions in young female college students

Pyo¹,

Kim

2021

Anat Cell Biol

View full text Add to dashboard Cite

The purpose of this study was to determine the characteristics of masticatory muscle activity and various oral condition factors, and to analyze their associations in order to improve the prevention and diagnosis of masticatory musclerelated diseases. This study included 30 Korean females (mean age of 20 years, age range of 19-21 years). Participants were instructed to complete a self-written questionnaire on factors that may affect their muscle activity. Surface electromyography was used to measure the activity of the masseter and temporalis muscles. We also observed the buccal mucosa ridge, tongue indentation, tooth cracks and fractures, and mandibular tori in the oral cavity. Spearman correlation analysis and the nonparametric Mann-Whitney U test were applied to the data. When subjects had temporomandibular disorder, the right temporalis muscle exhibited significantly lower activity (P<0.05). Those who had received orthodontic treatment within the previous 2 years showed significantly lower activity of the left masseter muscle (P<0.05). Those who had a left buccal mucosa ridge exhibited lower activity of the left masseter muscle and higher activity of the right temporalis muscle compared with those without such a ridge (P<0.05). Participants with no tongue indentation showed significantly higher activity in the left masseter muscle (P<0.05). These results indicate that there are relationships between masticatory muscle activity and various factors related to the oral condition.

show abstract

“…Ongoing orofacial pain (OFP) for more than three months was considered chronic (13) . TMDs etiology may be; a) muscle disorders (myalgia (14) or nonspecific pain of masticatory muscles), b) disc displacement (DD) with reduction (DDwR), or without reduction (DDwoR) (15) . the DD may be accompanied or not by locking in opening or closure (16) .…”

Section: Introductionmentioning

confidence: 99%

“…MRI findings coupled with careful interdisciplinary diagnosis may point out the TMD type (30) . The TMD with DD, especially DDwR, may include a myalgia (2ry myalgia) (31) , occlusal deviation (32,33) , facial asymmetry (displacement asymmetry) (34) , a TMJ site pain component (35) , clicking or crepitus (15) , or a combination of these symptoms.…”

Section: Introductionmentioning

confidence: 99%