scholarly journals Acute Effect of the Compression Technique on the Electromyographic Activity of the Masticatory Muscles and Mouth Opening in Subjects with Active Myofascial Trigger Points

2020 ◽  
Vol 10 (21) ◽  
pp. 7750 ◽  
Author(s):  
Michał Ginszt ◽  
Grzegorz Zieliński ◽  
Marcin Berger ◽  
Jacek Szkutnik ◽  
Magdalena Bakalczuk ◽  
...  
Keyword(s):  
Mouth Opening ◽  
Trigger Points ◽  
Acute Effect ◽  
Masticatory Muscles ◽  
Study Group ◽  
Electromyographic Activity ◽  
Compression Technique ◽  
Myofascial Trigger Points ◽  
Stomatognathic System ◽  
Before And After

Active myofascial trigger points (MTrPs) in masticatory muscles are associated with a reduced range of motion and muscle weakness within the stomatognathic system. However, it is hard to identify the most effective treatment technique for disorders associated with MTrPs. The objective of this study was to analyze the acute effect of the compression technique (CT) on active maximal mouth opening (MMO) and electromyographic activity of the masseter (MM) and temporalis anterior (TA) muscles in subjects with active myofascial trigger points in the MM muscles. The study group comprised 26 women (mean age 22 ± 2) with bilateral active myofascial trigger points (MTrPs) in the MM. The control group comprised 26 healthy women (mean age 22 ± 1) without the presence of MTrPs in the MM. Masticatory muscle activity was recorded in two conditions (during resting mandibular position and maximum voluntary clenching) before and after the application of the CT to the MTrPs in MM. After the CT application, a significant decrease in resting activity (3.09 μV vs. 2.37 μV, p = 0.006) and a significant increase in clenching activity (110.20 μV vs. 139.06 μV, p = 0.014) within the MM muscles were observed in the study group, which was not observed within TA muscles. Controls showed significantly higher active MMO values compared to the study group before CT (50.42 mm vs. 46.31 mm, p = 0.024). The differences between the study group after CT and controls, as well as among the study group before and after CT did not reach the assumed level of significance in terms of active MMO. The compression technique appears to be effective in the improvement of the active maximal mouth opening and gives significant acute effects on bioelectric masticatory muscle activity. Therefore, CT seems to be effective in MTrPs rehabilitation within the stomatognathic system.

scholarly journals Rapid maxillary expansion in the treatment of the functional posterior crossbite: joint noise and electromyographic activity analysis

2019 ◽  
Vol 48 ◽  
Author(s):  
Diego Jesus Brandariz PIMENTEL ◽  
Laís Valencise MAGRI ◽  
Melissa de Oliveira MELCHIOR ◽  
Guido Artemio MARAÑÓN-VÁSQUEZ ◽  
Mirian Aiko Nakane MATSUMOTO ◽  
...  
Keyword(s):  
Masticatory Muscles ◽  
Rapid Maxillary Expansion ◽  
Electromyographic Activity ◽  
Maxillary Expansion ◽  
Posterior Crossbite ◽  
Stomatognathic System ◽  
End Of Treatment ◽  
Before And After ◽  
Electromyographic Analysis ◽  
Level Of Significance

Abstract Introduction The rapid maxillary expansion (RME) reduces the risk of developing structural and functional disorders in the stomatognathic system. Objective To examine the effects of the RME as a treatment for the posterior crossbite, related with the electromyographic activity of the masticatory muscles and the TMJ noises in a population of children. Material and method 13 girls and 7 boys, regardless of the type of malocclusion, with a mean age of 9 years old (± 3), were treated with RME. The electrovibratography analyzed the TMJ noise, and the electromyography analyzed the masticatory muscles before treatment (T0) and after three months of a short-term follow-up (T1). The comparisons of the affected and unaffected sides by the crossbite were performed using Mann-Whitney’s test, and to compare data before and after treatment the Wilcoxon’s test was used (level of significance: 5%). Result No significant differences were found in the parameters of joint noise in comparison to the sides affected and unaffected by the crossbite, in both T0 and T1 (p>0.05); only the side without the crossbite observed decrease in the peak amplitude of the joint noises after treatment. In the static electromyographic analysis, inter-side differences were observed before and after treatment, since the deliberate unilateral chewing showed greater asymmetry activity in T0 for both sides, which has been corrected after treatment, improving the functional chewing. Conclusion The proposed treatment did not lead to the occurrence of joint noises and improved the functional pattern of electromyographic activity during chewing at the end of treatment.

scholarly journals Assessment of the influence of intermittent ischemic compression of latent trigger points on changes on the range of the lumbar spine mobility and myoelectric changes in the dorsal extensor muscle

2021 ◽  
Vol 25 (1) ◽  
Author(s):  
Sara Gamrot ◽  
Mateusz Pawłowski
Keyword(s):  
Lumbar Spine ◽  
Trigger Points ◽  
Mean Value ◽  
Extensor Muscle ◽  
Compression Technique ◽  
Myofascial Trigger Points ◽  
Spine Mobility ◽  
Before And After ◽  
Intermittent Compression ◽  
Back Extensor

Introduction: Pain in the lumbar spine (L) is a very serious health problem. The appearance of pain in the area of the back muscles with palpable small, sensitive points may indicate the presence of myofascial trigger points. There are many techniques used in the therapy of trigger points, including ischemic compression, which gives a therapeutic effect in the form of biomechanical normalization of muscle tissue restoring the normal functional state of a given muscle. Aim of the study: The aim of the study was to assessment of the influence of intermittent ischemic compression of latent trigger points on changes on the range of motion of the L spine and on myoelectric changes in the back extensor muscle. Material and Methods: The study included 32 students who were subjected to a single technique of intermittent ischemic compression according to Chaitow. The participants of the study performed the Thomayer test before and after the therapy to assess the range of spine mobility. The myoelectric changes in the back extensor muscle were assessed using NORAXON's EMG before and after the treatments following a protocol specifically developed for this purpose. The statistical analysis of the data was calculated using the Statistica 13 program. Results: One-time ischemic intermittent compression of the back extensor muscle statistically significantly increased the range of spine motion. The mean value of the tension of the back extensor muscle at rest after the therapy was reduced, showing statistically significant changes. The myoelectric changes in the back extensor muscle during flexion were not statistically significant Conclusions: The results showed the effectiveness of the ischemic intermittent compression technique in increasing the range of spine mobility after the treatment on the back extensor muscle. Intermittent ischemic compression leads to a decrease in the resting tension of the back extensor muscle, without affecting any significant changes during the flexion movement.

scholarly journals Electromyographic Patterns of Masticatory Muscles in Relation to Active Myofascial Trigger Points of the Upper Trapezius and Temporomandibular Disorders

Diagnostics ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 580
Author(s):  
Grzegorz Zieliński ◽  
Aleksandra Byś ◽  
Jacek Szkutnik ◽  
Piotr Majcher ◽  
Michał Ginszt
Keyword(s):  
Diagnostic Criteria ◽  
Temporomandibular Disorders ◽  
Masseter Muscle ◽  
Mouth Opening ◽  
Trigger Points ◽  
Masticatory Muscles ◽  
Healthy Adults ◽  
Bioelectric Activity ◽  
Myofascial Trigger Points ◽  
Upper Trapezius

The presented study aimed to analyze and compare the electromyographic patterns of masticatory muscles in subjects with active myofascial trigger points (MTrPs) within upper trapezius, patients with temporomandibular disorders (TMDs) and healthy adults. Based on the diagnostic criteria of MTrPs according to Travell & Simons and the Research Diagnostic Criteria for Temporomandibular Disorders, 167 people were qualified for the study. Subjects were divided into 3 groups: with active MTrPs in the upper trapezius, with diagnosed temporomandibular disorders (TMDs) and healthy adults. Measurements of the bioelectric activity of the temporalis anterior (TA) and masseter muscle (MM) were carried out using the BioEMG III ™. Based on statistical analysis, significantly lower values of TA resting activity were observed among controls in comparison to MTrPs (1.49 μV vs. 2.81 μV, p = 0.00) and TMDs (1.49 μV vs. 2.97 μV, p = 0.01). The POC index values at rest differed significantly between MTrPs and TMDs (86.61% vs. 105%, p = 0.04). Controls presented different electromyographic patterns within AcI in comparison to both MTrPs (4.90 vs. −15.51, p = 0.00) and TMDs (4.90 vs. −16.49, p = 0.00). During clenching, the difference between MTrPs and TMDs was observed within MVC TA (91.82% vs. 116.98%, p = 0.02). TMDs showed differences within AcI in comparison to both MTrPs group (−42.52 vs. 20.42, p = 0.01) and controls (−42.52 vs. 3.07, p = 0.00). During maximum mouth opening, differences between MTrPs and TMDs were observed within the bioelectric activity of masseter muscle (16.45 μV vs. 10.73 μV, p = 0.01), AsI MM (0.67 vs. 11.12, p = 0.04) and AcI (13.04 vs. −3.89, p = 0.01). Both the presence of MTrPs in the upper trapezius and TMDs are related to changes in electromyographic patterns of masticatory muscles.

scholarly journals Acute effect of the ischemic compression technique on the EMG activity of the muscle upper trapezius in subjects with myofascial trigger points

2020 ◽  
pp. 1-5
Author(s):  
Thomas Ângelo Miguel Gelmini ◽  
Patrícia Cilene Freitas Sant’Anna ◽  
William Dhein ◽  
Marcelo La Torre
Keyword(s):  
Trigger Points ◽  
Wilcoxon Test ◽  
Emg Activity ◽  
Myoelectric Activity ◽  
Compression Technique ◽  
Myofascial Trigger Points ◽  
Upper Trapezius ◽  
Significant Difference ◽  
Before And After ◽  
The Right

Background: Myofascial trigger points (MTP) are palpable painful nodules in a shortened area of a given muscle. The ischemic compression technique (IC), which consists of pressing the painful nodule until the elimination of tension or pain, has been shown to be an alternative for the treatment of MTP. The objective of this study was to analyze the influence of the IC technique on the level of pain to the palpation and electrical activity of the right upper trapezius (RUT) muscle during the elevation of the shoulder girdle and abduction of the shoulder in subjects with MTP. Methods: The sample consisted of ten subjects with mean age of 25.9 ± 2.68 years, who performed scapula elevation and right shoulder abduction up to 180º before and after the IC technique on the RUT muscle. The pain level was measured before and after the application of the IC technique and the myoelectric activity during the movements. Data analysis and processing were performed using the BIOMEC-SAS software and were presented in percentage values of the maximum voluntary isometric contraction (%MVIC). Statistical analysis were performed using the Wilcoxon test (α<0.05). Results: There was a significant increase in the mean% of activation (p=0.007) and in the peak %MVIC (p=0.005) of the myoelectric activity of the RUT muscle during the elevation movement of the right scapula. There was also a significant difference in the reduction of the level of pain referred to palpation (p=0.004). There were no differences during abduction movements. The calculation of the effect size showed that the IC technique had great influence on the results found in this study. Conclusion: The IC technique is an important resource for pain modulation and alteration of the myoelectric activity in MTP patients and can be used by physiotherapists when indicated.

Thermal Evaluation of Myogenous Temporomandibular Disorders and Myofascial Trigger Points in the Masticatory Muscles

2017 ◽  
pp. 329-350
Author(s):  
Denise Sabbagh Haddad ◽  
Marcos Leal Brioschi ◽  
Emiko Saito Arita
Keyword(s):  
Temporomandibular Disorders ◽  
Infrared Imaging ◽  
Trigger Points ◽  
Masticatory Muscles ◽  
Imaging Method ◽  
Myofascial Trigger Points ◽  
Functional Changes ◽  
Cutaneous Temperature ◽  
Vasomotor Activity ◽  
Temperature Levels

It is known that the myofascial trigger points (MTP) and myogenous temporomandibular disorders (TMDs) cause regional sympathetic hyperactivity in local temperature due to the cutaneous vasomotor activity and, for detection of functional changes, thermography is used as a complementary diagnostic imaging method. This chapter intends to study two masticatory muscles, masseter and anterior temporalis, in measurement of the cutaneous temperature of volunteers with and without myogenous TMD and MTP. Results: The temperature levels measured at both muscles regions in myogenous TMD volunteers were significantly lower than those measured in controls. Infrared imaging indicated differences between referred and local pain in MTPs of 0.5ºC. Conclusions: Infrared imaging measurements seem to indicate that it can be used as an aid in complimentary diagnosing of TMDs and MTPs in masticatory muscles.

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