Activation time analysis and electromyographic fatigue in patients with temporomandibular disorders during clenching

Pitta, Natássia Condilo; Nitsch, Gabriel Silva; Machado, Mariana Barcellos; Oliveira, Anamaria Siriani de

doi:10.1016/j.jelekin.2015.04.010

Cited by 28 publications

(42 citation statements)

References 16 publications

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“…Ten studies had good methodological quality, and two had low quality (Table ). Only four studies assessed the quality of the EMG signal (baseline and noise).…”

Section: Resultsmentioning

confidence: 99%

Is there a difference in the electromyographic activity of the masticatory muscles between individuals with temporomandibular disorder and healthy controls? A systematic review with meta‐analysis

Barros

Biasotto‐Gonzalez

Bussadori

et al. 2020

J of Oral Rehabilitation

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The diagnosis of temporomandibular disorders (TMD) is complex, and it is not yet clear in the literature whether the clinical changes associated with these disorders are also reflected in the electromyographic (EMG) activity of the muscles of mastication. To determine whether there is a difference in the electromyographic activity of the masticatory muscles between individuals with TMD and healthy controls. ScienceDirect, EMBASE, MEDLINE, PEDro, SciELO, CINAHL and LILACS databases from January 2000 to February 2019. Cross-sectional studies, crossover studies and randomised controlled trials evaluating EMG activity of right and left masseter and anterior temporal muscles in patients with TMD and healthy controls. Two independent assessors extracted data from the selected articles. The risk of bias was determined using a checklist for assessing methodological quality created based on the guidelines of the Strengthening the Reporting of Observational Studies in Epidemiology and International Society of Electrophysiology and Kinesiology. Mean differences and 95% confidence intervals were calculated and combined in metaanalyses. A total of 51 267 studies were retrieved, and 12 were included in this review. Only two studies enabled the comparative analysis of the results. The different EMG signal capturing, processing and analysis methods used constitute an important limitation to the comparative analyses of the results reported in the studies selected for the present review. This systematic review did not demonstrate evidence of significant differences in the EMG activity of the masticatory muscles between individuals with TMD and healthy controls. K E Y W O R D S electromyography, mastication, systematic review, temporomandibular disorders | 673 MASSAROTO BARROS eT Al.

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“…Ten studies had good methodological quality, and two had low quality (Table ). Only four studies assessed the quality of the EMG signal (baseline and noise).…”

Section: Resultsmentioning

confidence: 99%

Is there a difference in the electromyographic activity of the masticatory muscles between individuals with temporomandibular disorder and healthy controls? A systematic review with meta‐analysis

Barros

Biasotto‐Gonzalez

Bussadori

et al. 2020

J of Oral Rehabilitation

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show abstract

“…In previous masticatory muscle fatigue studies, the end criteria of the fatigue tests varied, which probably led to varied results , with reasons such as subjects could no longer produce the required bite force , onset of discomfort or pain and predetermined end time . However, in some studies evaluating limb muscles fatigue , the end criterion was defined as the instant when the produced force decreased by more than a certain percentage from the target force for consecutive seconds.…”

Section: Introductionmentioning

confidence: 99%

“…During such investigations, the participants were asked to clench at sustained maximal or submaximal force level to provoked fatigue (1,(9)(10)(11)(12)(13). However, a number of studies suggest that a low level of submaximal voluntary clenching (subMVC) was more realistic and closely replicates activities of daily living (ADLs) in healthy subjects (2,14,15).…”

Section: Introductionmentioning

confidence: 99%

Influence of sustained submaximal clenching fatigue test on electromyographic activity and maximum voluntary bite forces in healthy subjects and patients with temporomandibular disorders

Fan

Cai

et al. 2017

J of Oral Rehabilitation

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This study aimed to investigate whether the fatigue induced by sustained motor task in the jaw elevator muscles differed between healthy subjects and patients with temporomandibular disorder (TMD). Fifteen patients with TMD and thirteen age- and sex-matched healthy controls performed a fatigue test consisting of sustained clenching contractions at 30% maximal voluntary clenching intensity until test failure (the criterion for terminating the fatigue test was when the biting force decreased by 10% or more from the target force consecutively for >3 s). The pre- and post-maximal bite forces (MBFs) were measured. Surface electromyographic signals were recorded from the superficial masseter muscles and anterior temporal muscles bilaterally, and the median frequency at the beginning, middle and end of the fatigue test was calculated. The duration of the fatigue test was also quantified. Both pre- and post-MBFs were lower in patients with TMD than in controls (P < 0·01). No significant difference was found in the percentage change in MBF between groups. The duration of the fatigue test in TMD patients was significantly shorter than that of the controls (P < 0·05). Our results suggest that, compared to healthy subjects, patients with TMD become more easily fatigued, but the electromyographic activation process during the fatigue test is similar between healthy subjects and patients with TMD. However, the mechanisms involved in this process remain unclear, and further research is warranted.

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“…A ativação diferencial do sistema neuromuscular nos pacientes com DTM foi demonstrada previamente no estudo de Pitta et al (2015), no qual os músculos temporais de pacientes com DTM comparados à controles apresentaram maior tempo de ativação nos níveis mínimo e moderado de atividade mioelétrica durante apertamento dentário sustentado e redução significante do tempo de ativação no nível de atividade máximo. O mesmo não foi observado para o músculo masseter, o qual não apresentou diferenças no tempo de ativação em qualquer nível de atividade.…”

Section: Tomados Em Conjunto Os Resultados Atuais Indicam Que O Protunclassified

“…Atualmente, a EMG tem sido muito mais do que um elemento complementar para estudo anatômico, fisiológico e neurofisiológico do sistema musculoesquelético (Regalo et al, 2009) podendo contribuir para o diagnóstico da DTM (Pitta et al, 2015). Apesar disso, a EMG não deve substituir o exame clínico.…”

Section: Eletromiografia De Superfícieunclassified

Efeito de exercícios motores orofaciais e laserterapia nos sintomas de desordem temporomandibular e funções orofaciais

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Felício²

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Activation time analysis and electromyographic fatigue in patients with temporomandibular disorders during clenching

Cited by 28 publications

References 16 publications

Is there a difference in the electromyographic activity of the masticatory muscles between individuals with temporomandibular disorder and healthy controls? A systematic review with meta‐analysis

Is there a difference in the electromyographic activity of the masticatory muscles between individuals with temporomandibular disorder and healthy controls? A systematic review with meta‐analysis

Influence of sustained submaximal clenching fatigue test on electromyographic activity and maximum voluntary bite forces in healthy subjects and patients with temporomandibular disorders

Efeito de exercícios motores orofaciais e laserterapia nos sintomas de desordem temporomandibular e funções orofaciais

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