Electromyographic Evidence of Reduced Muscle Activity When ULF-TENS Is Applied to the V<sup>th</sup>and VII<sup>th</sup>Cranial Nerves

Kamyszek, Greg J; Ketcham, Robert; García, R. Pérez; Radke, John

doi:10.1080/08869634.2001.11746165

Cited by 37 publications

(22 citation statements)

References 29 publications

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“…Under this aspect, transcutaneous electric nerve stimulation (TENS) deserves special attention because it presents no side effects and enables both pain reduction 5 and alteration in EMG activity 16 . Works on the effects of TENS on masticatory muscles show that it is an effective resource in the relief of pain and in the decrease of EMG activity of masticatory muscles at rest 1,2,6,21 , in the reduction of myoelectric activity of the jaw-closing muscles during the opening phase of the jaw in TMD patients 16 , and in the increase of muscular electrical activity recorded during clenching in TMD patients 1,2 . On the other hand, recent studies 15 did not present the same results.…”

Section: Temporomandibular Disordersmentioning

confidence: 99%

Effect of conventional TENS on pain and electromyographic activity of masticatory muscles in TMD patients

2004

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Temporomandibular disorders (TMD) are characterized by several signs and symptoms, such as pain and changes in the electrical activity of masticatory muscles. Considering that transcutaneous electrical nerve stimulation (TENS) is a resource indicated to promote analgesia, the objective of this study was to evaluate the effect of TENS on pain and electromyographic (EMG) activity of the jaw elevator muscles in TMD patients. This study evaluated 35 female volunteers: 19 TMD patients (mean age = 23.04 ± 3.5) and 16 normal subjects (mean age = 23.3 ± 3.0). Transcutaneous electrical nerve stimulation (conventional mode, 150 Hz) was applied once to each group for 45 minutes. Surface electromyography (gain of 100 times and 1 kHz sampling frequency) and the visual analogue scale (VAS) were applied before and immediately after TENS application. Both VAS data and root mean square (RMS) values were analyzed using Student's t-test. The TMD group, compared to the control group, showed higher EMG activity of the jaw elevator muscles at rest. No difference was observed between the groups regarding maximum voluntary clenching (MVC). In TMD patients, TENS reduced both pain and EMG activity of the anterior portion of the temporal muscle, increasing the activity of the masseter muscles during MVC. It is possible to conclude that a single TENS application is effective in pain reduction. However, it does not act homogeneously on the features of the electric activity of the muscles evaluated. DESCRIPTORS: Temporomandibular joint; Electromyography; Masticatory muscles; Transcutaneous electric nerve stimulation; Facial pain. RESUMO:A desordem temporomandibular (DTM) é caracterizada por diversos sinais e sintomas, como dor e alteração do sinal eletromiográfico dos músculos da mastigação. Considerando que a estimulação elétrica nervosa transcutânea (TENS) é um recurso indicado para promover analgesia, o objetivo deste trabalho foi avaliar o efeito da TENS na dor e na atividade eletromiográfica (EMG) dos músculos elevadores da mandíbula em indivíduos com DTM. Foram selecionados 35 voluntários do sexo feminino, 19 portadores de DTM (média de 23,04 anos ± 3,5) e 16 normais (média de 23,3 anos ± 3,0). A TENS (modo convencional, 150 Hz) foi aplicada uma vez em ambos os grupos, por 45 min. O exame EMG de superfície (ganho de 100 vezes e freqüência de amostragem de 1 kHz) e a escala visual analógica (EVA) foram realizados antes e imediatamente depois da aplicação da TENS. Os dados da EVA e os valores da "root mean square" (RMS) foram analisados pelo teste t de Student. Observou-se que, na situação de repouso, os indivíduos com DTM apresentam um aumento da atividade EMG dos músculos elevadores da mandí-bula em relação aos do grupo controle. Na contração voluntária máxima (CVM), não foram observadas diferenças entre os grupos. Nos portadores de DTM, a TENS reduziu a dor, a atividade EMG da porção anterior do músculo temporal e aumentou a atividade dos músculos masseteres durante a CVM. É possível concluir que apenas uma aplicação da TENS...

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Section: Temporomandibular Disordersmentioning

confidence: 99%

Effect of conventional TENS on pain and electromyographic activity of masticatory muscles in TMD patients

2004

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“…Kamyszek et al demonstrated that the use of TENS can significantly decrease muscle activity in patients with TMDs. 13 Treacy et al showed that muscular awareness relaxation training (MART) was more effective in reducing muscle activity and improving mouth-opening. 14 Núñez et al revealed that mouth-opening in patients with TMDs increased following application of LLL therapy and TENS.…”

Section: Introductionmentioning

confidence: 99%

Comparative effectiveness of Low Level Laser therapy and Transcutaneous Electric Nerve Stimulation on Temporomandibular Joint Disorders

et al. 2017

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IntroductionTemporomandibular joint disorder (TMD) is a general term for clinical problems in temporomandibular joints (TMJs), masticatory muscles, and surrounding tissues, which manifest as limitations in motion and joint sounds. 1 TMD is the second most-common skeletal-muscular problem and one of the most common chronic problems involving orofacial pain, discomfort and disability. Approximately 75% of the population has several symptoms of TMD and 33% have at least one symptom. 2-5The etiology of TMD, especially muscle pain, is multifactorial and includes parafunctional habits, trauma, stress, heredity and occlusal factors 5 ; thus, conservative and reversible treatment, especially during initial periods, is recommended. 5,6 Several treatments have been suggested to control pain and symptoms. These include orthopedic stabilization, intraoral devices, medications (analgesics, muscle relaxants, antidepressants, and placebos) and physical therapy. 5 The aim of physical therapy is muscle relaxation, a decrease in pain, spasms, swelling and inflammation, and joint stability. Methods:In this single-blind study, 40 patients with temporomandibular disorders were randomly divided into four groups: TENS (TENSTem dental), LLL (diode 810 nm CW), sham-TENS, and sham-LLL. All subjects were examined and data on pain and tenderness in the temporomandibular joint (TMJ) and masticatory muscles (using the visual analogue scale) and mouth-opening (distance between incisal edges before feeling pain; mm) were collected before baseline (T1), after each session (T2-T5) and one month after the end of the sessions (T6)), and analyzed using repeated measure analysis of variance (ANOVA) and Bonferroni statistical tests. A P value < 0.05 was considered significant. Results:The decrease in pain (P = 0.000), tenderness (P = 0.000) and increase in mouth-opening ability (P = 0.002) was greater in the TENS and LLL groups than in the placebo groups. At the one-month follow-up, significant decrease in pain and tenderness was recorded in the TENS and LLL groups (P = 0.000). There was no significant differences between TENS and LLL and the placebo groups for maximum mouth-opening at the end of the study (P = 0.692). Conclusion: Using TENS or LLL therapy can improve TMD symptoms at least for the short term. Although the effects of the placebo played a role in improving symptoms, their effects were less important.

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“…Recording this rest position by means of intra-oral silicone will give us an ideal mandibularmaxilla relationship, but will not show us the ideal mandibular trajectory to CO. For this reason, neuromuscular dentists use a low frequency Transcutaneous Electrical Nerve Stimulator (TENS) that helps relax muscles during afferent stimuli interruption. When adequately adjusted to pulse at higher output, this device will create a mandibular movement on a neuromuscular trajectory [10,11,[24][25][26]. This can be easily visualized via the CMS that can calculate the ideal path of closure to a new CO, Fig 1. There is no better way to test if muscles are relaxed than that of surface electromyography, Fig.…”

Section: Functional Occlusionmentioning

confidence: 99%

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The controversy on dental occlusion has been an issue since the time dentistry was born. No other definition has been studied and written most then that regarding occlusion. With no doubt, initially, "occlusion" was seen as the result of technical and biomechanical applications: a static relationship of contact between two dental or prosthetic arches. Studies on anatomy of the dental arches and physiology of the stomatognathic system, have contributed to understanding how occlusion develops in a unique fashion for each individual. Nevertheless it's only with the study of the function of the stomatognathic system, along with progress in the development of new diagnostic technological instruments, that we can finally add precious information for a new, more modern definition of dental occlusion.Specifying an ideal occlusion is important because we can extrapolate precious information that could be applied when creating our smiles. The therapeutic information we gather comes as a result from what we define as a malocclusion and it's comparison to an ideal occlusion. Our ultimate goal, be it in general prosthetics or orthodontics, is to get as close as possible to achieving an ideal occlusion.

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Electromyographic Evidence of Reduced Muscle Activity When ULF-TENS Is Applied to the V^thand VII^thCranial Nerves

Cited by 37 publications

References 29 publications

Effect of conventional TENS on pain and electromyographic activity of masticatory muscles in TMD patients

Effect of conventional TENS on pain and electromyographic activity of masticatory muscles in TMD patients

Comparative effectiveness of Low Level Laser therapy and Transcutaneous Electric Nerve Stimulation on Temporomandibular Joint Disorders

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Electromyographic Evidence of Reduced Muscle Activity When ULF-TENS Is Applied to the Vthand VIIthCranial Nerves

Cited by 37 publications

References 29 publications

Effect of conventional TENS on pain and electromyographic activity of masticatory muscles in TMD patients

Effect of conventional TENS on pain and electromyographic activity of masticatory muscles in TMD patients

Comparative effectiveness of Low Level Laser therapy and Transcutaneous Electric Nerve Stimulation on Temporomandibular Joint Disorders

Untitled

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Electromyographic Evidence of Reduced Muscle Activity When ULF-TENS Is Applied to the V^thand VII^thCranial Nerves