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Head Movements during Chewing: Relation to Size and Texture of Bolus
B. Häggman-Henrikson1,2 and
P.-O. Eriksson1,2,*
1 Department of Odontology, Clinical Oral Physiology, Umeå University, S-901 87 Umeå, Sweden; and
2 Centre for Musculoskeletal Research, Gävle University, Sweden;
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Figure 1. Mandibular and head movement patterns for one subject during chewing of different boluses displayed in frontal view (A) and 3D movement amplitudes against time (B).
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Figure 2. Head extension in relation to start position (baseline) and in relation to mandibular movement cycles (A). Mean head extension for the group (n = 12), at the start of chewing cycles nos. 1, 2, 5, 10, 15, and 20 for the different boluses (B). Wilcoxon matched-pairs test for differences in head extension between these time points: * p < 0.05; ** p < 0.01. Note differences in head extension between start of cycle 1 and start of cycle 2 for all boluses. Definitions of preparatory head extension and head movements (C).
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Figure 3. Box and whisker plots (median, quartiles, and range) of head and mandibular movement amplitudes during chewing of boluses of different sizes and textures for the group (n = 12). P-values (Wilcoxon matched-pairs test) indicate differences in amplitudes in the chewing of boluses of different sizes and textures.
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Journal of Dental Research, Vol. 83, No. 11,
864-868 (2004)
DOI: 10.1177/154405910408301108
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