Masseter muscle activity and temporomandibular disorders

2006 ◽  
Vol 51 (3) ◽  
pp. 187-188
Keyword(s):  
Muscle Activity ◽  
Temporomandibular Disorders ◽  
Masseter Muscle

Nocturnal masseter muscle activity is related to symptoms and somatization in temporomandibular disorders

2012 ◽  
Vol 73 (4) ◽  
pp. 307-312 ◽  
Author(s):  
Meike Shedden Mora ◽  
Daniel Weber ◽  
Saskia Borkowski ◽  
Winfried Rief
Keyword(s):  
Muscle Activity ◽  
Temporomandibular Disorders ◽  
Masseter Muscle

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

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Liliana Szyszka-Sommerfeld ◽  
Monika Machoy ◽  
Mariusz Lipski ◽  
Krzysztof Woźniak
Keyword(s):  
Electrical Activity ◽  
Muscle Activity ◽  
Temporomandibular Disorders ◽  
Masseter Muscle ◽  
Mixed Dentition ◽  
Masticatory Muscle ◽  
Temporalis Muscle ◽  
Pain Group ◽  
Axis I ◽  
Masseter Muscles

Aim. The aim of this study was to evaluate masticatory muscle electrical activity in patients with pain-related and pain-free temporomandibular disorders (TMDs) as well as in subjects with no TMD. Methods. Ninety children with mixed dentition were recruited to the study. Of this total, 30 subjects were diagnosed with pain-related TMD (TMD-P), 30 with pain-free TMD (TMD-PF), and 30 without TMD. We used Axis I of the Research Diagnostic Criteria for TMD (RDC/TMD) to assess the presence of TMD in the examined children. The electromyographical (EMG) potentials of the temporalis and masseter muscles were measured with a DAB-Bluetooth Instrument (Zebris Medical GmbH, Germany) at rest and during maximum voluntary clenching (MVC). Results. An analysis of the EMG recordings showed statistically significant intergroup differences in masticatory muscle electrical activity at rest and during MVC. Significantly higher rest temporalis muscle activity was noted in pain-related TMD subjects compared with that children from the pain-free TMD and non-TMD groups, as well as in TMD-PF children in relation to those without TMD. The EMG potentials of the temporalis muscle during MVC were much lower in patients with TMD-P than in pain-free TMD and non-TMD subjects. Masseter muscle activity at rest in the TMD-pain group was significantly greater, and masseter muscle EMG potentials during clenching were markedly lower than in patients with no TMD diagnosis. Conclusion. The use of electromyography to assess masticatory muscle function revealed alterations in the pattern of temporalis and masseter muscle activity in patients with pain-related TMD compared with the pain-free subjects.

Roles played by histamine in strenuous or prolonged masseter muscle activity in mice

2013 ◽  
Vol 40 (12) ◽  
pp. 848-855 ◽  
Author(s):  
Hiroyuki Yoneda ◽  
Fukie Niijima-Yaoita ◽  
Masahiro Tsuchiya ◽  
Hiroyuki Kumamoto ◽  
Makoto Watanbe ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Masseter Muscle

Reflex Responses Induced by Tooth Unloading

2000 ◽  
Vol 84 (2) ◽  
pp. 1088-1092 ◽  
Author(s):  
Kemal S. Türker ◽  
Melissa Jenkins
Keyword(s):  
Local Anesthetic ◽  
Muscle Activity ◽  
Masseter Muscle ◽  
Horizontal Direction ◽  
Reflex Response ◽  
Maxillary Incisor ◽  
Static Force ◽  
Incisor Tooth ◽  
Long Latency ◽  
Unloading Reflex

The reflex response of the masseter muscle to the rapid unloading of a single maxillary incisor tooth was studied. Unloading of a static force of 2 N in the horizontal direction resulted in a short-latency excitation, inhibition, and long-latency excitation of masseter muscle activity occurring at latencies of approximately 13, 20, and 40 ms, respectively, with a corresponding change in bite force occurring slightly later in each case. Following the blocking of periodontal input by the injection of local anesthetic around the stimulated tooth, inhibitory responses were abolished. Therefore, it is concluded that the observed masseteric inhibition was caused by the unloading of periodontal mechanoreceptors and thus that these receptors may contribute to the jaw unloading reflex.

Effects of orthodontic archwire changes on masseter muscle activity

1984 ◽  
Vol 86 (4) ◽  
pp. 353 ◽  
Author(s):  
B.R. Smith ◽  
C.M. Flanary ◽  
C.L. Hurst ◽  
J.D. Rugh
Keyword(s):  
Muscle Activity ◽  
Masseter Muscle

scholarly journals The power features of Masseter muscle activity in tension-type and migraine without aura headache during open-close clench cycles

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3556 ◽  
Author(s):  
Behrouz Alizadeh Savareh ◽  
Ali Ghanjal ◽  
Azadeh Bashiri ◽  
Monireh Motaqhey ◽  
Boshra Hatef
Keyword(s):  
Muscle Activity ◽  
Masseter Muscle ◽  
Migraine Without Aura ◽  
Mouth Opening ◽  
Tension Type Headache ◽  
Emg Activity ◽  
Statistical Parameters ◽  
Signal Energy ◽  
Type Headache ◽  
Mean Variance

Introduction Different types of headaches and TMJ click influence the masseter muscle activity. The aim of this study was to assess the trend of energy level of the electromyography (EMG) activity of the masseter muscle during open-close clench cycles in migraine without aura (MOA) and tension-type headache (TTH) with or without TMJ click. Methods Twenty-five women with MOA and twenty four women with TTH participated in the study. They matched with 25 healthy subjects, in terms of class of occlusion and prevalence of temporomandibular joint (TMJ) with click. The EMG of both masseter muscles were recorded during open-close clench cycles at a rate of 80 cycles per minute for 15 seconds. The mouth opening was restricted to two centimeters by mandibular motion frame. Signal processing steps have been done on the EMG as: noise removing, smoothing, feature extraction, and statistical analyzing. The six statistical parameters of energy computed were mean, Variance, Skewness, Kurtosis, and first and second half energy over all signal energy. Results A three-way ANOVA indicated that during all the cycles, the mean of energy was more and there was a delay in showing the peak of energy in the masseter of the left side with clicked TMJ in MOA group compared to the two other groups, while this pattern occurred inversely in the side with no-clicked TMJ (P < 0.009). The variation of energy was significantly less in MOA group compared to the two other groups in the no-clicked TMJ (P < 0.003). However, the proportion of the first or second part of signal energy to all energy showed that TTH group had less energy in the first part and more energy in the second part in comparison to the two other groups (P < 0.05). Conclusion The study showed different changes in the energy distribution of masseter muscle activity during cycles in MOA and TTH. MOA, in contrast to TTH, had lateralization effect on EMG and interacted with TMJ click.

Masticatory muscle activity during maximum voluntary clench in different research diagnostic criteria for temporomandibular disorders (RDC/TMD) groups

2008 ◽  
Vol 13 (5) ◽  
pp. 434-440 ◽  
Author(s):  
Gianluca M. Tartaglia ◽  
Marco Antonio Moreira Rodrigues da Silva ◽  
Stefano Bottini ◽  
Chiarella Sforza ◽  
Virgilio F. Ferrario
Keyword(s):  
Diagnostic Criteria ◽  
Muscle Activity ◽  
Temporomandibular Disorders ◽  
Masticatory Muscle ◽  
Masticatory Muscle Activity ◽  
Research Diagnostic Criteria
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