Ageing and surface EMG activity patterns of masticatory muscles

Cecilio, Flávia Argentato; Regalo, Simone Cecílio Hallak; Palinkas, Marcelo; Issa, João Paulo Mardegan; Siéssere, Selma; Hallak, Jaime Eduardo Cecílio; Machado‐de‐Sousa, João Paulo; Semprini, Marisa

doi:10.1111/j.1365-2842.2010.02051.x

Cited by 101 publications

(122 citation statements)

References 28 publications

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“…The activation pattern eventually increased or decreased, but the numerical pattern changes were small. It should be emphasized that, in agreement with the findings of Cecilio et al, 5 the temporalis muscles were found to be the most active of the muscles studied throughout the experiment. This outcome was not expected in our study.…”

Section: Discussionsupporting

confidence: 90%

“…[4][5][6][7][8] The Lucia jig not only eliminates any type of occlusal interference that may cause mandibular deviation of the centric relation (CR) for maximum habitual intercuspation (MHI) but also reduces the effect of muscular hyperactivity. 9 It facilitates the mandibular manipulation of normal subjects, assisting dental surgeons to centralize the condyles along with their respective articular discs in the mandibular fossae.…”

Section: Declaration Of Interestsmentioning

confidence: 99%

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The effect of a Lucia jig for 30 minutes on neuromuscular re-programming, in normal subjects

et al. 2012

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Abstract:The Lucia jig is a technique that promotes neuromuscular reprogramming of the masticatory system and allows the stabilization of the mandible without the interference of dental contacts, maintaining the mandible position in harmonic condition with the musculature in normal subjects or in patients with temporomandibular dysfunction (TMD).This study aimed to electromyographically analyze the activity (RMS) of the masseter and temporal muscles in normal subjects (control group) during the use of an anterior programming device, the Lucia jig, in place for 0, 5, 10, 20 and 30 minutes to demonstrate its effect on the stomatognathic system. Forty-two healthy dentate individuals (aged 21 to 40 years) with normal occlusion and without parafunctional habits or temporomandibular dysfunction (RDC/TMD) were evaluated on the basis of the electromyographic activity of the masseter and temporal muscles before placement of a neuromuscular re-programming device, the Lucia jig, on the upper central incisors. There were no statistically significant differences (p < 0.05) in the electromyographic activity of the masticatory muscles in the different time periods. The Lucia jig changed the electromyographic activity by promoting a neuromuscular reprogramming. In most of the time periods, it decreased the activation of the masticatory muscles, showing that this device has wide applicability in dentistry. The use of a Lucia jig over 0, 5, 10, 15, 20 and 30 minutes did not promote any statistically significant increase in muscle activity despite differences in the data, thus showing that this intra-oral device can be used in dentistry.

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Section: Discussionsupporting

confidence: 90%

Section: Declaration Of Interestsmentioning

confidence: 99%

The effect of a Lucia jig for 30 minutes on neuromuscular re-programming, in normal subjects

et al. 2012

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“…In humans, the cross-sectional area and density of the masseter and temporalis muscles decrease as a result of aging (19). Electromyographic (EMG) records in these muscles showed age-related physiological changes which included a reduction in muscle activity (20). Previous studies in humans have indicated a change in chewing function together with a greater number of bites required for mouth movements and bolus formation because of the underlying changes in muscle morphology and physiology with increasing age (19).…”

Section: Discussionmentioning

confidence: 99%

Effect of aquaporin 1 and 4 on masticatory muscles degeneration as a result of aging

Tümer¹,

Demır²,

Çiçek³

2017

BLL

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OBJECTIVE: The changes in the mouth structures due to aging cause some structural and functional changes by affecting masticatory muscles over time. The aim of this study was to evaluate the aging-related histopathologic changes and immunohistochemically assessed aquaporin 1 and 4 expressions on masseter and temporal muscles. MATERIAL AND METHODS: 14 Balb/c white mice (50-80 g) were used in this study. Group I consisted of young animals (2-month-individuals) (n = 7) and Group II consisted of older animals (18-month-old) (n = 7). After routine histological follow-ups were made, tissues were stained immunohistochemically for aquaporin 1 and aquaporin 4 as well as with hematoxylin-eosin. RESULTS: It was seen that while the masseter and temporalis muscle tissues showed a high immunoreactivity (+++) for aquaporin 1 and 4 in young mice, they showed a weak immunoreactivity (+) for aquaporin 1 and 4 in old mice (p = 0.001). In the H-score assessment, aquaporin 1 and 4 immunoreactivity was signifi cantly higher in young mice than in old mice (p = 0.002). CONCLUSIONS: Consequently, it was shown that degeneration of the masticatory muscles increased with aging and there was a decrease in intra-and intercellular exchange of substances because of changing aquaporin 1 and aquaporin 4 expressions (Tab. 2, Fig. 4, Ref. 20). Text in PDF www.elis.sk.

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“…In adults, there is a correlation during swallowing between the vertical face dimension, elevators activity, and extent of tooth contact. The activity during swallowing is negatively correlated with the vertical dimension and positively correlated with tooth contact (13,14) . Other authors claim that there is more activity in the masseter muscle during swallowing in the intercuspidal position than in other jaw positions.…”

Section: Discussionmentioning

confidence: 99%

Atividade elétrica do músculo masseter durante a deglutição de líquido em adultos jovens

Pernambuco

Silva

Lima³

et al. 2011

J. Soc. Bras. Fonoaudiol.

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OBJETIVO: Caracterizar a atividade elétrica muscular do masseter durante a deglutição de líquido em indivíduos adultos jovens saudáveis. MÉTODOS: A população constou de 14 voluntários considerados saudáveis seguindo os critérios de inclusão e exclusão estabelecidos para esta pesquisa. Foi realizada avaliação eletromiográfica do músculo masseter bilateralmente, durante o repouso e nas tarefas de deglutição de 14,5 ml, 20 ml e 100 ml de líquido. O sinal eletromiográfico foi normalizado pela máxima atividade voluntária resistida (MAVR), considerada como 100% de atividade elétrica muscular. RESULTADOS: No masseter direito, a maior média percentual foi encontrada na tarefa de deglutição de 20 ml e no masseter esquerdo na tarefa de 14,5 ml. No masseter direito ocorreu diferença entre as deglutições de 14,5 ml e 20 ml. No masseter esquerdo não houve diferença entre as tarefas de deglutição. CONCLUSÃO: A atividade elétrica muscular do masseter em adultos jovens saudáveis durante a deglutição de líquido pode ser influenciada pelo volume deglutido e apresenta diferentes respostas bilateralmente.

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Ageing and surface EMG activity patterns of masticatory muscles

Cited by 101 publications

References 28 publications

The effect of a Lucia jig for 30 minutes on neuromuscular re-programming, in normal subjects

The effect of a Lucia jig for 30 minutes on neuromuscular re-programming, in normal subjects

Effect of aquaporin 1 and 4 on masticatory muscles degeneration as a result of aging

Atividade elétrica do músculo masseter durante a deglutição de líquido em adultos jovens

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