Ultrasound image of human masseter muscle related to bite force, electromyography, facial morphology, and occlusal factors

Bakke, Merete; Tuxen, Anette; Vilmann, Peter; Jensen, Bente Rona; Vilmann, A; Toft, Marianne

doi:10.1111/j.1600-0722.1992.tb01734.x

Cited by 145 publications

(236 citation statements)

References 14 publications

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“…4,6,8 afirmaram que o comprimento ântero-posterior dos arcos dentários superiores também está associado ao tipo facial do indivíduo, ou seja, indivídu-os dolicofaciais possuem arcos dentários superiores mais longos, quando comparados a indivíduos braquifaciais. Já para a medida da profundidade do palato (Tab.…”

Section: Tipo Facialunclassified

Avaliação da profundidade do palato e das dimensões do arco dentário superior em indivíduos com má oclusão e diferentes tipos faciais

Esteves

Bommarito

2007

Rev. Dent. Press Ortodon. Ortop. Facial

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Objetivo: o deste estudo foi avaliar a profundidade do palato e as dimensões do arco dentário superior de indivíduos com má oclusão e diferentes tipos faciais. Metodologia: a amostra empregada neste estudo foi constituída por telerradiografias em norma lateral e modelos de estudo de 135 pacientes com más oclusões de Classe I (n = 45), Classe II (n = 45) e Classe III (n = 45) de Angle, sendo 67 do gênero feminino e 68 do gênero masculino, com faixa etá-ria entre 12 e 21 anos de idade, divididos igualmente em três grupos conforme o tipo facial apresentado: braquifacial, mesofacial e dolicofacial. Resultados e Conclusões: os resultados obtidos demonstraram que, quanto ao tipo facial, houve diferença estatisticamente significante apenas para a medida da profundidade do palato, sendo que os indivíduos braquifaciais apresentaram palato com menor profundidade (média = 18,18mm), quando comparados aos indivíduos dolicofaciais (média = 19,52mm). Quanto ao dimorfismo sexual, pudemos verificar que os indivíduos do gênero masculino apresentaram médias da distância intermolares superiores (51,36mm) e da profundidade do palato (19,61mm) aumentadas, de forma significante, em relação às médias obtidas para o gênero feminino (50,15mm e 18,37mm para as medidas da distância intermolares e da profundidade do palato, respectivamente). Avaliando o tipo de má oclusão, pudemos constatar que houve diferença estatisticamente significante apenas para a medida do comprimento do arco, sendo que indivíduos com má oclusão de Classe II apresentaram arcos dentários superiores com maior comprimento ântero-posterior (média = 31,23mm) que indivíduos com má oclusão de Classe III (média = 29,64mm). Entretanto, a média da medida comprimento do arco encontrada para o grupo Classe I (30,52mm) não apresentou diferença estatisticamente significante quando comparada às médias obtidas para os grupos Classe II e Classe III. ResumoPalavras-chave: Arco dentário superior. Tipo facial. Má oclusão.

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Section: Tipo Facialunclassified

Avaliação da profundidade do palato e das dimensões do arco dentário superior em indivíduos com má oclusão e diferentes tipos faciais

Esteves

Bommarito

2007

Rev. Dent. Press Ortodon. Ortop. Facial

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“…Since skeletal muscle architecture is closely correlated with its function [35], ultrasound parameters have been widely employed to characterize muscle activity [36][37][38], and the relationship between EMG and muscle architecture changes detected with ultrasound has been reported [39][40].…”

Section: Introductionmentioning

confidence: 99%

Dynamic monitoring of forearm muscles using one-dimensional sonomyography system

Guo

Zheng

Huang

et al. 2008

JRRD

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Abstract-We introduce a method, known as one-dimensional sonomyography (1-D SMG), that uses A-mode ultrasound signals to detect dynamic thickness changes in skeletal muscle during contraction. We custom-designed a 1-D SMG system to collect synchronized A-mode ultrasound, joint angle, and surface electromyography (EMG) signals of forearm muscles during wrist extension. We extracted the 1-D SMG signal from the ultrasound signal by automatically tracking the corresponding echoes, which we then used to calculate muscle thickness changes. We tested the right forearm muscles of nine nondisabled young subjects while they performed wrist extensions at 15.0, 22.5, and 30.0 cycles/min and their largest wrist extension angle ranged from 80° to 90°. We found that the muscle deformation and EMG root mean square signals correlated linearly with wrist extension angle. The ratio of deformation to wrist angle was significantly different among the subjects (p < 0.001) but not among the trials of different extension rates for each subject (p = 0.9). The results demonstrate that 1-D SMG can be reliably performed and that it has the potential for skeletal muscle assessment and prosthesis control.

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“…There is evidence of an association between the activity of the masticatory muscles, the area and the thickness of these muscles [21][22][23][24].…”

Section: Discussionmentioning

confidence: 99%

“…This overuse of muscle fibers during mastication may be responsible for a muscular hypertrophy determined by an increased muscle thickness [21][22][23][24]. …”

Section: Discussionmentioning

confidence: 99%

Effect of Radiation on the Performance of the Stomatognathic System – a Pilot Study

Palinkas¹

2014

JDODT

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The purpose of this study was to evaluate the Electromyography (EMG), thickness of the masseter and temporal muscles, maximal bite force in individuals with head and neck cancer treated with radiotherapy. The patterns of the muscle activity were evaluated by means of the EMG recordings of the masseter and temporal muscles; bilaterally during the following clinical conditions: rest, protrusion, right and left lateral excursions and Maximum Habitual Intercuspation (MHI). Muscle thickness was evaluated using ultrasound at rest and in MHI. Maximal bite force in the right and left molar regions of 10 fully dentate individuals with head and neck cancer was evaluated after radiotherapy and compared with a control group. The EMG means showed that at rest, protrusion, and left lateral excursion, there were statistically significant differences (p < 0.05). On evaluation with ultrasound, the muscle thickness values were higher for individuals with head and neck cancer at rest and in MIH, with statistically significant results found only for the right temporal during the MIH. Participants with head and neck cancer treatment were evaluated in the present study showed higher electromyographic activity when compared with the control group for all clinical situations. The treatment used with patients undergoing head and neck cancer increased the electromyographic activity, the muscle thickness, and the bite force when compared to control subjects. The results suggest a muscle dysfunction of the stomatognathic system in individuals with head and neck cancer treatment evaluated in the present study.

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Ultrasound image of human masseter muscle related to bite force, electromyography, facial morphology, and occlusal factors

Cited by 145 publications

References 14 publications

Avaliação da profundidade do palato e das dimensões do arco dentário superior em indivíduos com má oclusão e diferentes tipos faciais

Avaliação da profundidade do palato e das dimensões do arco dentário superior em indivíduos com má oclusão e diferentes tipos faciais

Dynamic monitoring of forearm muscles using one-dimensional sonomyography system

Effect of Radiation on the Performance of the Stomatognathic System – a Pilot Study

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