Modulation of tongue motion and tongue pressure during liquid swallowing with different bolus volumes.
bolus volume
swallowing
tongue motion
tongue pressure
Journal
Journal of oral rehabilitation
ISSN: 1365-2842
Titre abrégé: J Oral Rehabil
Pays: England
ID NLM: 0433604
Informations de publication
Date de publication:
Nov 2021
Nov 2021
Historique:
revised:
27
07
2021
received:
24
02
2021
accepted:
03
08
2021
pubmed:
21
8
2021
medline:
7
10
2021
entrez:
20
8
2021
Statut:
ppublish
Résumé
The tongue functions by modulating according to bolus volume when swallowing; however, associated tongue dynamics are unclear. We aimed to clarify how tongue motion and tongue pressure change with bolus volume during swallowing. Sixteen healthy volunteers (age 29.5 ± 3.8 years; 12 males, 4 females) were recruited. Two electromagnetic articulography markers were attached, one each on the anterior and posterior parts of the tongue, to measure motion. A sensor sheet, with five pressure-sensitive points, was attached to the hard palate to measure tongue pressure. Participants were asked to swallow 3 ml and 10 ml of water. Motion trajectory, maximum velocity, vertical displacement just before contact with the hard palate, and maximum magnitude and duration of tongue pressure were analysed. Tongue rotation was observed in the sagittal plane; its rate of appearance was significantly higher when swallowing 3 ml of water than when swallowing 10 ml, and the rate of rotation at posterior part was significantly higher than at the anterior part. The maximum velocity and vertical displacement were significantly greater when swallowing 10 ml of water than those when swallowing 3 ml of water. There was no significant difference in either the maximum magnitude of tongue pressure or maximum duration of tongue pressure between 3 ml and 10 ml. Bolus volume influenced the pattern of tongue motion; however, there was no difference in tongue pressure.
Sections du résumé
BACKGROUND
BACKGROUND
The tongue functions by modulating according to bolus volume when swallowing; however, associated tongue dynamics are unclear.
OBJECTIVE
OBJECTIVE
We aimed to clarify how tongue motion and tongue pressure change with bolus volume during swallowing.
METHODS
METHODS
Sixteen healthy volunteers (age 29.5 ± 3.8 years; 12 males, 4 females) were recruited. Two electromagnetic articulography markers were attached, one each on the anterior and posterior parts of the tongue, to measure motion. A sensor sheet, with five pressure-sensitive points, was attached to the hard palate to measure tongue pressure. Participants were asked to swallow 3 ml and 10 ml of water. Motion trajectory, maximum velocity, vertical displacement just before contact with the hard palate, and maximum magnitude and duration of tongue pressure were analysed.
RESULTS
RESULTS
Tongue rotation was observed in the sagittal plane; its rate of appearance was significantly higher when swallowing 3 ml of water than when swallowing 10 ml, and the rate of rotation at posterior part was significantly higher than at the anterior part. The maximum velocity and vertical displacement were significantly greater when swallowing 10 ml of water than those when swallowing 3 ml of water. There was no significant difference in either the maximum magnitude of tongue pressure or maximum duration of tongue pressure between 3 ml and 10 ml.
CONCLUSION
CONCLUSIONS
Bolus volume influenced the pattern of tongue motion; however, there was no difference in tongue pressure.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1243-1251Subventions
Organisme : JSPSKAKENHI(17K17162)
Informations de copyright
© 2021 John Wiley & Sons Ltd.
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