Analysis of temporal variation in human masticatory cycles during gum chewing

Crane, Elizabeth A.; Rothman, Edward D.; Childers, David; Gerstner, Geoffrey E.

doi:10.1016/j.archoralbio.2013.06.009

Cited by 8 publications

(7 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The lower stability could be a result of the orofacial components disabilities. For the control of the involved structures in chewing function, it is necessary that the system handles both the variations found in the properties of food and the need to generate precise orolinguofacial movements (Crane et al, 2013). Indeed, the TMD group had worse general myofunctional status, including changes in mandibular and tongue mobility, in agreement with previous findings (De Felício, Medeiros, Melchior, 2012).…”

Section: Discussionsupporting

confidence: 85%

An index for the evaluation of 3D masticatory cycles stability

Ferreira

Zago

Felício

et al. 2017

Archives of Oral Biology

View full text Add to dashboard Cite

The MSI is an efficient method to measure the stability of the masticatory cycles. These preliminary results encourage validating the index on a larger sample. The variability in the motor behavior of chewing can impair the objectivity of its evaluations in several types of patients, including those with TMD. The MSI could be useful to complement clinical assessments, providing data for planning the rehabilitation of masticatory function in these patients.

show abstract

Section: Discussionsupporting

confidence: 85%

An index for the evaluation of 3D masticatory cycles stability

Ferreira

Zago

Felício

et al. 2017

Archives of Oral Biology

View full text Add to dashboard Cite

show abstract

“…Moreover, while our study was of natural feeding on solid food, many standard swallow study protocols objectively assess difficulty of swallowing using liquid swallows of various volumes [68, 69] or of solid food [49, 50]. However, detailed kinematic analysis of such clinical data has not been performed to characterize preceding, during, and following swallows in human during natural feeding.…”

Section: Discussionmentioning

confidence: 99%

“…The squeeze-back mechanism of swallowing, in which the tongue contacts the palate from anterior to posterior to ‘squeeze’ the bolus into the oropharynx, is the only mechanism employed in human and macaque swallowing of solid foods, whereas other mammals utilize undulation of the tongue for transport for the bolus to the oropharynx when swallowing solid foods [14–17]. Although there are some arguments as to how many phases are defined within each gape cycle [49], the four-phase gape cycle of mandibular movement, fast close (FC), slow close (SC), slow open (SO), and fast open (FO), has been successfully applied to characterize videofluoroscopic (VF) data of human feeding sequences [47] and a recent study explained variation in phase durations of gum chewing behavior in human [50] in a similar way to a comparative study looking at various animal species including non-human primates [51]. Additionally, tongue and hyoid movements are coordinated with the above-mentioned four-phase gape cycle of mandibular movement similarly in humans and macaques [16, 47].…”

Section: Introductionmentioning

confidence: 99%

Sagittal Plane Kinematics of the Jaw and Hyolingual Apparatus During Swallowing in Macaca mulatta

et al. 2017

View full text Add to dashboard Cite

Studies of mechanisms of feeding behavior are important in a society where aging- and disease-related feeding disorders are increasingly prevalent. It is important to evaluate the clinical relevance of animal models of the disease and the control. Our present study quantifies macaque hyolingual and jaw kinematics around swallowing cycles to determine the extent to which macaque swallowing resembles that of humans. One female and one male adult Macaca mulatta were trained to feed in a primate chair. Videofluoroscopy was used to record kinematics in a sagittal view during natural feeding on solid food, and the kinematics of the hyoid bone, thyroid cartilage, mandibular jaw, and anterior-, middle-, and posterior-tongue. Jaw gape cycles were defined by consecutive maximum gapes, and the kinematics of the swallow cycles were compared with those of the two consecutive non-swallow cycles preceding and succeeding the swallow cycles. Although there are size differences between macaques and humans, and macaques have shorter durations of jaw gape cycles and hyoid and thyroid upward movements, there are several important similarities between our macaque data and human data reported in the literature: (1) The durations of jaw gape cycles during swallow cycles are longer than those of non-swallow cycles as a result of an increased duration of the jaw-opening phase; (2) Hyoid and thyroid upward movement is linked with a posterior tongue movement and is faster during swallow than non-swallow cycles; (3) Tongue elevation propagates from anterior to posterior during swallow and non-swallow cycles. These findings suggest that macaques can be a useful experimental model for human swallowing studies.

show abstract

“…The mean duration of the cycle observed in this study is consistent with those described in previous surveys, which showed variations ranging from 0.61 to 1.04 s (3,5) . In order to maintain the total duration of the cycle stable, the neuronal control of the masticatory movements -central pattern generator (CPG) -can act by modulating the duration of the opening, closing and occlusal phases of the masticatory cycle (26) . Although these modulations were not investigated in the present study, it is possible that they have contributed to the absence of effects on temporal variables such as number of cycles and duration of the sequence and the masticatory cycle.…”

Section: Discussionmentioning

confidence: 99%

Estudo das variáveis cinemáticas da mastigação unilateral e habitual de indivíduos saudáveis

Pasinato

Oliveira

Paz

et al. 2017

CoDAS

View full text Add to dashboard Cite

RESUMO Objetivo Descrever e comparar as variáveis cinemáticas temporoespaciais do movimento mandibular durante a mastigação unilateral deliberada e habitual de indivíduos saudáveis. Método Participaram do estudo 8 voluntários saudáveis, do gênero masculino, com faixa etária entre 19 e 24 anos. Os dados cinemáticos foram obtidos através do sistema de análise de movimento Qualysis (QTM - Qualisys Track Manager). Foram realizados registros de mastigação unilateral direita (MU) e habitual (MH) de bala de goma de gelatina de consistência firme. Foram analisadas variáveis relacionadas à (1) sequência mastigatória (duração, número de ciclos e frequência mastigatória); (2) ciclo mastigatório: duração do ciclo mastigatório, amplitude de movimento mandibular vertical e médio-lateral durante o ciclo mastigatório, velocidade máxima durante as fases de abertura e fechamento. A comparação das variáveis durante a MU e MH foi realizada por meio do teste t pareado (p<0,05) e os tamanhos de efeito (‘d’ de Cohen) foram calculados. Resultados Em relação à sequência mastigatória, observou-se menor frequência mastigatória durante MU comparada à MH (1,19±0,21 e 1,29±0,16Hz, respectivamente, p=0,004, d=0,53) e menores velocidades máximas de abertura (MU=67,4 mm/s e MH=80,02; p=0,053; d=0,80) e fechamento (MU=71,77±9,35mm/s e MH=83,51±17 mm/s, p=0,014, d=0,79) do ciclo mastigatório. Conclusão As variáveis cinemáticas relacionadas à sequência e ao ciclo mastigatório foram influenciadas pelo padrão mastigatório adotado – unilateral ou habitual.

show abstract

Analysis of temporal variation in human masticatory cycles during gum chewing

Cited by 8 publications

References 59 publications

An index for the evaluation of 3D masticatory cycles stability

An index for the evaluation of 3D masticatory cycles stability

Sagittal Plane Kinematics of the Jaw and Hyolingual Apparatus During Swallowing in Macaca mulatta

Estudo das variáveis cinemáticas da mastigação unilateral e habitual de indivíduos saudáveis

Contact Info

Product

Resources

About