Masseter muscle activity during the whole day in children and young adults

Miyamoto, Keisuke; Ishizuka, Yasuo; Ueda, Hiroshi; Saifuddin, Mohammed; Shikata, N.; Tanne, Kazuo

doi:10.1046/j.1365-2842.1999.00478.x

Cited by 43 publications

(41 citation statements)

References 16 publications

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“…A few studies have determined the duty time over longer time periods, including a wide range of daily behaviors (hindlimb muscles in cat, Hensbergen and Kernell, 1997;monkey, Hodgson et al, 2001; jaw muscles in human, Miyamoto et al, 1996Miyamoto et al, , 1999rabbit, Langenbach et al, 2004;van Wessel et al, 2005). Although duty time is a valuable parameter, it is only a general indicator of muscle use and cannot distinguish between different types of activation, such as phasic or tonic.…”

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confidence: 99%

Burst characteristics of daily jaw muscle activity in juvenile rabbits

Wessel

Langenbach

Kawai

et al. 2005

Journal of Experimental Biology

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Muscle activation varies with different behaviors and can be quantified by the level and duration of activity bursts. Jaw muscles undergo large anatomical changes during maturation, which are presumably associated with changes in daily muscle function. Our aim was to examine the daily burst number, burst length distribution and duty time (fraction of the day during which a muscle was active) of the jaw muscles of juvenile male rabbits (Oryctolagus cuniculus). A radio-telemetric device was implanted to record muscle activity continuously from the digastric, superficial and deep masseter, medial pterygoid and temporalis during maturation week 9-14. Daily burst characteristics and duty times were determined for activations, including both powerful and non-powerful motor behavior. All muscles showed constant burst numbers, mean burst lengths and duty times during the recording period. Including all behavior, the temporalis showed significantly larger daily burst numbers (205·000) and duty times (18.2%) than the superficial and deep masseter (90·000; 7.5%). Burst numbers and duty times were similar for the digastric (120·000; 11.1%) and medial pterygoid (115·000; 10.4%). The temporalis and deep masseter showed many short low activity bursts (0.05·s), the digastric showed many long bursts (0.09·s). For activations during powerful behaviors the superficial masseter and medial pterygoid had the largest burst numbers and duty times. Both muscles showed similar burst characteristics for all activation levels. It was concluded that activation of the jaw muscles is differently controlled during powerful and non-powerful motor behaviors and the functional organization of motor control patterns does not vary from 9 to 14 weeks of age.

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confidence: 99%

Burst characteristics of daily jaw muscle activity in juvenile rabbits

Wessel

Langenbach

Kawai

et al. 2005

Journal of Experimental Biology

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“…High-level muscle activity like that seen during MVC does not often occur in routine daily life. The development of a portable EMG recording system has provided a great opportunity to record data for considerably longer periods during routine daily life [14,18,19].…”

Section: Discussionmentioning

confidence: 99%

Changes in masticatory muscle activity during maximum voluntary clenching, mealtimes and sleep after surgical correction of mandibular prognathism

Ueda

Tabe²,

Kato³

et al. 2011

J. Stomat. Occ. Med.

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Introduction This case report is designed to present changes in masticatory muscle activity after surgical correction of mandibular prognathism during maximum voluntary clenching (MVC), mealtimes and sleep in routine daily life.Patient and methods The patient, a Japanese female 18 years and 11 months old, exhibited mandibular prognathism and anterior open bite. Using a portable electromyogram (EMG) recording system masseter and anterior temporal muscle activities were recorded during maximum voluntary clenching (MVC), mealtimes and sleep at home as follows: T0 pre-treatment, T1 6 months after surgery and T2 12 months after surgery.Results Considerable changes in masseter muscle activity during MVC were not found throughout the treatment although masseter muscle activity during mealtimes at T1 and T2 increased to almost double compared to T0 values. Temporal muscle activity during MVC and mealtimes at T1 increased considerably and then the absolute integrated values seemed to decrease slightly. Muscle activities during sleep were very low and indicated almost 0.2% of muscle activity during MVC in both muscles.Conclusion The results of this case show that correction of mandibular prognathism by mandibular setback surgery produces considerable improvement of masticatory muscle activity during mealtimes. Therefore, special attention should be paid to muscle activity during mealtimes, as well as to strong activity during MVC.

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“…This relationship was relevant for the increase of masticatory muscle activity at rest while decreasing during maximum biting in the symptomatic patients when compared to the asymptomatic ones (Dahlström, 1989;Mohl et al, 1990b;Oliveira et al, 2004). Subjects with cross-bite also demonstrated larger patterns of muscular tension than of that in individuals with normal occlusion (Li et al, 1994;Miyamoto et al, 1999;Nuño-Licona et al, 1993). Such findings are partially corroborated by our results, mainly with respect to the masseter at rest (see Figure 2).…”

Section: Discussionmentioning

confidence: 99%

“…Cross-bite is the term used to indicate an abnormal buccolingual relationship of the teeth and it is a potential risk of temporomandibular disorder (Egermark et al, 2003). Subjects with cross-bite exhibit larger muscular tension patterns at rest position if compared with normal occlusion subjects (Li et al, 1994;Miyamoto et al, 1999;Nuño-Licona et al, 1993;Rodrigues et al, 2006;Thilander et al, 2002). Several authors also indicate that unilateral cross-bite in children can lead to alterations in masseteric and temporal tension mainly when it is associated with jaw deviation.…”

Section: Introductionmentioning

confidence: 99%

Avaliação eletromiográfica quantitativa de músculos faciais em crianças do sexo feminino com mordida cruzada

Fukuda¹,

Alvarez²,

Nassri³

et al. 2008

RBEB

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The electromyography has been widely used as a diagnostic method for facial muscle conditions. The aim of this study was to determine the RMS (Root Mean Square) value of the electromyographic signal of facial muscles in children with normal occlusion or cross-bite as well as to verify a possible clinical application of this parameter. "Normal group" was composed of female children with normal occlusion and "cross-bite group" was composed of female children with cross-bite. We performed quantitative electromyographic analysis of masseter and temporal muscles at rest and with maximum biting force. Our results showed that the occlusion modifications affect normal masticatory muscle function, and that the quantitative electromyography is an important tool to help diagnosing the malocclusion in female children. Considering the analysis of the results, we verified that the electromyographic rest activity of the masseter or temporal muscles in cross-bite female children is higher in relation to the rest activity of normal occlusion female children. We concluded that the RMS value of the masseteric and temporal electromyographic signal has a diagnostic value to discriminate female children with cross-bite from those with normal occlusion.Keywords: Electromyography, Malocclusion, Cross-bite. Resumo A eletromiografia tem sido amplamente utilizada como método diagnóstico de disfunções de músculos da face. O objetivo deste estudo foi determinar a tensão RMS do sinal eletromiográfico de músculos da face de crianças do sexo feminino com oclusão normal ou com mordida cruzada, visando avaliar uma possível aplicação clínica deste parâmetro. O "grupo normal" foi composto por crianças do sexo feminino com oclusão normal e o "grupo mordida cruzada" por crianças do sexo feminino com diagnóstico de mordida cruzada. Foram realizadas análises eletromiográficas quantitativas dos músculos masseter e temporal nas condições de repouso e em máxima contração voluntária isométrica (MCV). Considerando a relação da tensão RMS do sinal eletromiográfico no repouso e em MCV, nossos resultados mostraram que variações de oclusão influenciam a função muscular mastigatória normal e que a ele- Electromyography of facial muscles in cross-bite female childrenFukuda, T. Y.; Alvarez, A. S.; Nassri, L. F. G.; Godoy, C. M. G. IntroductionElectromyography consists of the graphic registration of the myoelectric signal, and it represents an important tool for quantification of muscular activity at rest and during contraction (Basmajian and De Luca, 1985;Fridlund and Cacioppo, 1986). Thus, electromyographic analysis has been widely used as a diagnostic method for muscular conditions in several situations and in different muscle functions. For example, as for the dental research, elecromyographic analysis is used to measure the electric activity of normal facial muscles, or in pathological conditions (Basmajian and De Luca, 1985;Fridlund and Cacioppo, 1986). Among the pathological conditions are the temporomandibular dysfunctions, characterized by extrin...

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Masseter muscle activity during the whole day in children and young adults

Cited by 43 publications

References 16 publications

Burst characteristics of daily jaw muscle activity in juvenile rabbits

Burst characteristics of daily jaw muscle activity in juvenile rabbits

Changes in masticatory muscle activity during maximum voluntary clenching, mealtimes and sleep after surgical correction of mandibular prognathism

Avaliação eletromiográfica quantitativa de músculos faciais em crianças do sexo feminino com mordida cruzada

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