Chewing time and chewing strokes in different dentofacial deformities

Picinato-Pirola, Melissa; Mello-Filho, Francisco Veríssimo; Trawitzki, Luciana Vitaliano Voi

doi:10.1590/s2179-64912012000200007

Cited by 9 publications

(8 citation statements)

References 22 publications

(25 reference statements)

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“…Changes related to chewing, swallowing and speech were found in the orofacial functions studied in all of investigated DFD individuals. Several authors have described changes in orofacial functions in patients with class II and III malocclusion (10,15,17,26) , similar to that seen in this study.…”

Section: Discussionsupporting

confidence: 89%

“…The dorsum of the tongue is used to crush food against the palate and there is also little or no action of the buccinator muscles. Cases with class II and III malocclusion were compared to a control group and showed abnormalities in the chewing efficiency, although the authors have not found differences between individuals with the deformity (10) .…”

Section: Introductionmentioning

confidence: 99%

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Controle motor oral e funções orofaciais em indivíduos com deformidade dentofacial

Prado

Sovinski

Filho

et al. 2015

Audiol., Commun. Res.

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Purpose:To determine the correlation between oral motor control and orofacial functions in individuals with dentofacial deformity (DFD).Methods: Sixteen individuals from 18 to 40 years, (average 28.37 years) participated. Seven individuals were class II (three women and four men) and nine were class III (five women and four men). They were evaluated for diadochokinesis (DDK) using the emissions /pa/, /ta/, /ka/ and / pataka/. The chewing, swallowing, and speech functions were filmed and analyzed by three speech specialists, using the MBGR protocol.The correlation results between DDK and the orofacial functions were obtained through the Spearman test. Results: A positive correlation was observed between the DDK instability parameters in issuing the "pa" and "ka" and the chewing function. There was a positive correlation between swallowing and DDK for "pa" emission regarding the instability. As for the speed, there was a negative correlation for the DDK mean rate and a positive correlation for the average DDK period at "pa" emission. As for the speech, there was a negative correlation for "pa" emission for the instability parameter. Conclusion: The oral motor control was related to the severity of the change in chewing and swallowing functions regarding the DDK speed and instability paramenters. RESUMO Objetivo: Verificar se há relação entre o controle motor oral e as funções orofaciais em indivíduos com deformidade dentofacial (DDF). Métodos: Participaram 16 indivíduos entre 18 e 40 anos, média de 28,37 anos, sendo sete indivíduos padrão II (três mulheres e quatro homens) e nove, padrão III (cinco mulheres e quatro homens). Foi realizada avaliação da diadococinesia (DDC) das emissões /pa/, /ta/, /ka/ e /pataka/. As funções de mastigação, deglutição e fala foram analisadas por consenso entre três fonoaudiólogas especialistas na área, a partir da filmagem, utilizando o protocolo MBGR. A correlação entre os resultados da DDC e das funções orofaciais foi obtida por meio do teste de Spearman. Resultados: Foi observada correlação positiva entre os parâmetros de instabilidade da DDC na emissão do "pa" e "ka" e a função de mastigação. Houve correlação positiva entre deglutição e DDC para a emissão do "pa" no que se refere à instabilidade das emissões e, quanto à velocidade, houve correlação negativa para a média da taxa da DDC e correlação positiva para a média do período da DDC na emissão do "pa". Quanto à fala, houve correlação negativa para a emissão do "pa", para parâmetro de instabilidade. Conclusão: O controle motor oral mostrou-se relacionado à gravidade da alteração das funções de mastigação e deglutição, no que se refere aos parâmetros instabilidade e velocidade da DDC.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Controle motor oral e funções orofaciais em indivíduos com deformidade dentofacial

Prado

Sovinski

Filho

et al. 2015

Audiol., Commun. Res.

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“…Measurement methods of chewing cycles reported include surface electromyography (28,29), motion capture (30,31), kinesiograph (32) and visual examination (22,23). The number of chewing cycles are measured based on myoelectric waveforms in surface electromyograms, and the trajectory of mandibular movements in motion capture and kinesiograph.…”

Section: Discussionmentioning

confidence: 99%

Endoscopic evaluation of food bolus formation and its relationship with the number of chewing cycles

Fukatsu

Nohara

Kotani

et al. 2015

J of Oral Rehabilitation

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It is known that solid food is transported to the pharynx actively in parallel to it being crushed by chewing and mixed with saliva in the oral cavity. Therefore, food bolus formation should be considered to take place from the oral cavity to the pharynx. In previous studies, the chewed food was evaluated after the food had been removed from the oral cavity. However, it has been pointed out that spitting food out of the oral cavity interferes with natural food bolus formation. Therefore, we observed food boluses immediately before swallowing using an endoscope to establish a method to evaluate the food bolus-forming function, and simultaneously performed endoscopic evaluation of food bolus formation and its relationship with the number of chewing cycles. The subject was inserted the endoscope nasally and instructed to eat two coloured samples of boiled rice simultaneously in two ingestion conditions ('as usual' and 'chewing well'). The condition of the food bolus was graded into three categories for each item of grinding, mixing and aggregation and scored 2, 1 and 0. The score of aggregation was high under both ingestion conditions. The scores of grinding and mixing tended to be higher in subjects with a high number of chewing cycles, and the score of aggregation was high regardless of the number of chewing cycles. It was suggested that food has to be aggregated, even though the number of chewing cycles is low and the food is not ground or mixed for a food bolus to reach the swallowing threshold.

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“…The chewing movement data has been collected with the proposed method and a video camera, simultaneously and compared with the clinical assessment. We recorded the experiment with a camera (D3100 Nikon) to check the information acquired in the clinical evaluation that has been validated in the literature [29] .…”

Section: Methodsmentioning

confidence: 99%

Mastication Evaluation With Unsupervised Learning: Using an Inertial Sensor-Based System

Lucena

Lacerda

Caldas

et al. 2018

IEEE J. Transl. Eng. Health Med.

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There is a direct relationship between the prevalence of musculoskeletal disorders of the temporomandibular joint and orofacial disorders. A well-elaborated analysis of the jaw movements provides relevant information for healthcare professionals to conclude their diagnosis. Different approaches have been explored to track jaw movements such that the mastication analysis is getting less subjective; however, all methods are still highly subjective, and the quality of the assessments depends much on the experience of the health professional. In this paper, an accurate and non-invasive method based on a commercial low-cost inertial sensor (MPU6050) to measure jaw movements is proposed. The jaw-movement feature values are compared to the obtained with clinical analysis, showing no statistically significant difference between both methods. Moreover, We propose to use unsupervised paradigm approaches to cluster mastication patterns of healthy subjects and simulated patients with facial trauma. Two techniques were used in this paper to instantiate the method: Kohonen’s Self-Organizing Maps and K-Means Clustering. Both algorithms have excellent performances to process jaw-movements data, showing encouraging results and potential to bring a full assessment of the masticatory function. The proposed method can be applied in real-time providing relevant dynamic information for health-care professionals.

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Chewing time and chewing strokes in different dentofacial deformities

Cited by 9 publications

References 22 publications

Controle motor oral e funções orofaciais em indivíduos com deformidade dentofacial

Controle motor oral e funções orofaciais em indivíduos com deformidade dentofacial

Endoscopic evaluation of food bolus formation and its relationship with the number of chewing cycles

Mastication Evaluation With Unsupervised Learning: Using an Inertial Sensor-Based System

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