Electromyography as a Means of Assessing Masticatory Muscle Activity in Patients with Pain-Related Temporomandibular Disorders

Szyszka-Sommerfeld, Liliana; Machoy, Monika; Lipski, Mariusz; Woźniak, Krzysztof

doi:10.1155/2020/9750915

Cited by 11 publications

(26 citation statements)

References 50 publications

(87 reference statements)

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“…Asymmetry between left and right masticatory muscle activity was determined quantitatively using the asymmetry index (AsI, unit %, range from 0% to 100%), according to the following equation [30,31]:…”

Section: Asymmetry and Activity Indexesmentioning

confidence: 99%

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The Relationship between Stress and Masticatory Muscle Activity in Female Students

Zieliński

Ginszt

Zawadka

et al. 2021

JCM

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The aim of the study was to analyze the relationship between stress measured by the perceived stress scale (PSS-10) questionnaire and masticatory muscle activity. Experimental design assumed the study of healthy young women without temporomandibular disorders, dividing them into three groups depending on the result of the stress level and then comparing these groups in terms of bioelectrical activity of the masticatory muscles. After the exclusion criteria were applied, 63 female students (mean age: 22.3 ± 2.4 years) from Medical University of Lublin were included in the study. The subjects were then divided into 3 groups: with low (n = 18), medium (n = 18) and high stress level (n = 27), according to PSS-10 results. Resting and functional activity of temporalis anterior (TA) and masseter (MM) muscles were measured by electromyograph BioEMG III. There were statistically significant effects of group on the absolute value of asymmetry index (AsI) of TA and MM during maximum voluntary clenching on dental cotton rollers (both p = 0.02). Post hoc analysis shows that there were statistically significant differences between medium and high stress groups in AsI TA (p = 0.01) and between low and high stress groups in AsI MM (p = 0.02). Perceived stress measured by PSS-10 questionnaire seems to be associated with changes in muscular asymmetry in functional clenching activity.

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Section: Asymmetry and Activity Indexesmentioning

confidence: 99%

“…Muscle activity was measured between the anterior part of the temporalis anterior muscle and superficial part of the masseter muscle by means of the activity index (AcI, unit %, range from 0% to 100%), according to the following equation [30,31]:…”

Section: Asymmetry and Activity Indexesmentioning

confidence: 99%

The Relationship between Stress and Masticatory Muscle Activity in Female Students

Zieliński

Ginszt

Zawadka

et al. 2021

JCM

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“…It has been negatively recognized whether electromyography (EMG) can be usefully used in diagnosing TMD [ 30 , 31 ]. However, recent literatures have suggested that EMG values of masticatory muscle have reliable diagnostic sensitivity in pain-related TMD patients [ 32 , 33 ]. Although EMG was not used in this study, it would be better if EMG be used in the course of TMD treatment in the future by referring to these studies.…”

Section: Discussionmentioning

confidence: 99%

Associations between mandibular torus and types of temporomandibular disorders, and the clinical usefulness of temporary splint for checking bruxism

et al. 2021

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Background Occlusal stress from oral parafunctional habits is one of the causes of temporomandibular disorders (TMD) and mandibular torus (MT). Although some studies have investigated the correlation between TMD and MT, understanding of the relationships between types of TMD and MT is insufficient. Therefore, we conducted this study to investigate the associations between presence of MT and TMD types. Methods This study included 77 patients diagnosed with TMD who first visited our clinic for TMD between March 2019 and July 2020. Among them, 30 (38.9%) had MT, and 54 (70.1%) had oral parafunction. Parafunctional activity during sleep was confirmed using a temporary splint for checking bruxism (TSCB). Results The relationship between prevalence of MT and oral parafunction in TMD patients was not statistically significant (P = 0.131), but the odds ratio was relatively high at 2.267. An analysis of TMD type revealed that Type I, which is classified as myalgia of the masticatory muscles, and MT had a significant association (P = 0.011). We fabricated a TSCB for 27 patients to wear during sleep and confirmed that 23 (85.2%) had nocturnal bruxism. The TSCB results and presence of MT showed a significant relationship (P = 0.047). Conclusion Through the results of this study, clinicians may consider the hyperactivity of masticatory muscles in the presence of MT when treating TMD patients. In addition, TSCB has a great diagnostic value as it can be easily manufactured and be useful for discovering pre-existing oral parafunctions that patients are not aware of.

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“…The diagnostic value of sEMG in the evaluation of this condition is not yet clearly established [ 17 , 28 , 30 , 31 ]. There is also little information on the electromyographic analysis of masticatory muscle activity in children diagnosed with TMD-P and further studies are needed in this area, especially in young patients [ 11 , 32 , 33 ]. Accurate diagnosis of TMD-P in children is particularly important because children usually have difficulty expressing unpleasant pain symptoms, so they may be overlooked.…”

Section: Introductionmentioning

confidence: 99%

Accuracy of Surface Electromyography in the Diagnosis of Pain-Related Temporomandibular Disorders in Children with Awake Bruxism

Szyszka-Sommerfeld

Sycińska-Dziarnowska

Budzyńska

et al. 2022

JCM

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The study assessed masticatory muscle electromyographic (EMG) activity in both children diagnosed with pain-related temporomandibular disorders (TMD-P) and awake bruxism (AB) and in children without TMD, as well as the diagnostic value of surface electromyography (sEMG) in diagnosing TMD-P in subjects with AB. After evaluation based on the Axis I of the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD), 30 children diagnosed with myofascial pain were included in the myofascial pain group and 30 children without TMD diagnosis comprised the control group (mean age of 9.49 ± 1.34 years). The activity of the anterior temporal (TA) and masseter (MM) muscle was assessed bilaterally using a DAB-Bluetooth device (zebris Medical GmBH, Germany) at rest and during maximum voluntary clenching (MVC). The receiver operating characteristic (ROC) curve was used to determine the accuracy, sensitivity, and specificity of the normalized sEMG data. Statistically significant intergroup differences were observed in TA and MM muscle EMG activity at rest and during MVC. Moderate degree of sEMG accuracy in discriminating between TMD-P and non-TMD children was observed for TAmean, left MM, and MMmean EMG muscle activity at rest. sEMG can be a useful tool in assessing myofascial TMD pain in patients with AB.

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Electromyography as a Means of Assessing Masticatory Muscle Activity in Patients with Pain-Related Temporomandibular Disorders

Cited by 11 publications

References 50 publications

The Relationship between Stress and Masticatory Muscle Activity in Female Students

The Relationship between Stress and Masticatory Muscle Activity in Female Students

Associations between mandibular torus and types of temporomandibular disorders, and the clinical usefulness of temporary splint for checking bruxism

Accuracy of Surface Electromyography in the Diagnosis of Pain-Related Temporomandibular Disorders in Children with Awake Bruxism

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