Head movements during chewing: relation to size and texture of bolus
2004 (English)In: Journal of Dental Research, ISSN 0022-0345, Vol. 83, no 11, 864-868 p.Article in journal (Refereed) Published
Coordinated mandibular and head-neck movements during jaw opening-closing activities suggest a close functional linkage between the jaw and the neck regions. The present study investigated whether size and texture of bolus can influene head-neck behaviour during chewing. Using an optoelectronic 3-D recording technique, we analyzed concomitant mandibular and head-neck movements in 12 healthy adults chewing small (3 g) and large (9 g) boluses of chewing gum and Optosil®. The main finding was a head extension during chewing, the amount of which was related mainly to bolus size. Furthermore, each chewing cycle was accompanied not only by mandibular movements, but also by head extension-flexion movements. Larger head movement amplitudes were correlated with larger size and, to some extent, also with harder texture of the bolus. The results suggest that head-neck behaviour during chewing is modulated in response to changes in jaw sensory-motor input.
Place, publisher, year, edition, pages
2004. Vol. 83, no 11, 864-868 p.
Bolus, chewing, head, neck, jaw
IdentifiersURN: urn:nbn:se:umu:diva-13025DOI: 10.1177/154405910408301108PubMedID: 15505237OAI: oai:DiVA.org:umu-13025DiVA: diva2:152696