Effects of interocclusal distance on bite force and masseter EMG in healthy participants

Arima, Takahiro; Takeuchi, Taihei; Honda, Kosuke; Tomonaga, Akio; Tanosoto, Tomohiro; Ohata, Noboru; Svensson, Peter

doi:10.1111/joor.12097

Cited by 29 publications

(28 citation statements)

References 57 publications

(82 reference statements)

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“…The significance of this movement lies in its relation to the bite force. Studies showed that maximum bite force tends to vary when measured at different jaw openings . Rosentritt et al reported that increasing the mouth opening distance from 2 to 4 mm caused only superficial changes in the specimens with small influence on the post‐fatigue fracture resistance …”

Section: Discussionmentioning

confidence: 99%

Lithium Disilicate Restorations Fatigue Testing Parameters: A Systematic Review

Nawafleh

Hatamleh

Elshiyab

et al. 2015

Journal of Prosthodontics

133

117

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The studies reviewed showed a level of heterogeneity, as testing parameters were considered through different setups. The current study demonstrated that various setting of the testing parameters and having a lack of testing standardization has likely led to inconsistency in the reported results. The obvious heterogeneity in the setting of testing variables-especially the magnitude of load and number of cycles applied-made it impractical to run direct comparisons between the reviewed studies. Therefore, specific international standardization of fatigue testing of dental restorations is urgently needed to ensure the delivery of consistent, indicative, and comparable data.

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Section: Discussionmentioning

confidence: 99%

Lithium Disilicate Restorations Fatigue Testing Parameters: A Systematic Review

Nawafleh

Hatamleh

Elshiyab

et al. 2015

Journal of Prosthodontics

133

117

View full text Add to dashboard Cite

show abstract

“…To keep the mandible balanced, the other pre‐molar side (the balancing side) was clenching a 10‐mm‐diameter cotton roll. The TMD subjects were preferentially using their asymptomatic muscles , whereas healthy participants showed higher masseter muscles EMG activity in the dominant side . Bite force was displayed on the computer screen as visual feedback to the subject, allowing the subject to know their bite force values.…”

Section: Methodsmentioning

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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“…For example, Roldan et al showed that the molar bite force was higher than the incisor bite force (15). A previous study by Arima et al showed that the MVOBF decreased with increased interocclusal distance between 8 mm to 12 mm (18). This difference may be caused by differences in the interocclusal distance.…”

Section: Maximal Voluntary Occlusal Bite Force Levelsmentioning

confidence: 98%

Blood oxygenation of masseter muscle during sustained elevated muscle activity in healthy participants

Suzuki

Castrillón

Arima

et al. 2016

J of Oral Rehabilitation

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Myofascial pain associated with temporomandibular disorders has often been linked to pathological muscle hyperactivity. As a result, localised disturbances of intramuscular blood flow could lead to a lower level of oxygen distribution, hypoxia and microcirculatory changes. To assess haemodynamic changes in the masseter muscle during sustained elevated muscle activity (SEMA). Sixteen healthy participants performed thirty 1-min bouts of SEMA with intervals of 1-min 'rest' periods between the bouts on a bite force transducer device. The participants completed three sessions with different percentage of their maximal voluntary occlusal bite force (MVOBF): 0% (no task), 10% or 40% MVOBF tasks. The order of the sessions was randomised with 1- to 2-week intervals. Haemodynamic characteristics of the masseter muscle were estimated with use of a laser blood oxygenation monitor. Tissue blood oxygen saturation (StO ) during SEMA was lower than during rest (P < 0·001). The relative changes in total haemoglobin (Total-Hb) and StO were influenced by condition (SEMA and rest) and with interactions between condition and session (0%, 10% and 40% MVOBF tasks). These results suggest that SEMA may lead to hypoxia in the masseter muscle and that the haemodynamic characteristics and muscle symptoms depend on the magnitude of muscle contractions. Overall, the present findings may help to provide better insights into relationships between jaw muscle activity, haemodynamic changes and symptom developments with implications for clinical conditions such as bruxism characterised by different levels of tooth-grinding and tooth-clenching muscle activity.

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Effects of interocclusal distance on bite force and masseter EMG in healthy participants

Cited by 29 publications

References 57 publications

Lithium Disilicate Restorations Fatigue Testing Parameters: A Systematic Review

Lithium Disilicate Restorations Fatigue Testing Parameters: A Systematic Review

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

Blood oxygenation of masseter muscle during sustained elevated muscle activity in healthy participants

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