Coordination of oral cavity and laryngeal movements during swallowing

Abstract

In this study, dynamic imaging was used to track the movements of oral cavity and laryngeal structures during swallowing in 10 normal adults subjects. The movements of tiny lead pellet markers attached to the lips, tongue, mandible, and soft palate, as well as anatomic landmarks on the hyoid bone, were measured in relation to a reference pellet affixed to the upper central incisors. Sagittal views of the oral cavity were obtained using standard videofluorography. Each subject produced 10 swallows of 12 ml of tap water followed by 5 swallows with a bite block placed between the molars. The recorded video images were input to a microcomputer where the x- and y-coordinates of the pellets were measured. Results of the analyses revealed considerable temporal overlap in the timing of oral cavity and laryngeal movements, widespread individual variability in coordination patterns and movement trajectories, and selective effects of the bite block. These data suggest the existence of individual adaptive strategies in the programming and control of swallowing movements.

Deglutitive tongue movement after correction of mandibular protrusion

“…22 Furthermore, this movement is affected by the insertion of an oral appliance [5][6][7] and expansion of the maxillary dental arch. 8 Hence, we speculated that deglutitive tongue movement would change to adapt to the new oral and maxillofacial morphology after orthognathic surgery.…”

“…[9][10][11] Because deglutitive tongue movement was highly variable among different individuals, 6 the data recorded three times in each subject were averaged.…”

“…[1][2][3][4] This movement is affected by insertion of an oral appliance [5][6][7] and expansion of the maxillary dental arch. 8 We suggested previously that sensory input from the tongue affects neurophysiological control of deglutitive tongue movement.…”

Influence of Craniofacial Morphology on Hyoid Movement: A Preliminary Correlational Study

“…They suggested that the upward displacement was related to oral cavity events and the forward displacement to pharyngeal processes. Gay et al [14] evaluated swallowing function with and without bite blocks placed between the molars. With the bite blocks in place the tongue movement pattern differed between male and female subjects.…”

The Sequence of Swallowing Events During the Chin-Down Posture

“…any research studies have explored the sequence of the events of swallowing and have revealed that there is considerable variability between and within healthy individuals (Cook et al, 1989;Gay, Rendell, Spiro, Mosier, & Lurie, 1994;Kendall, 2002;Kendall, Leonard, & McKenzie, 2003;Kendall, McKenzie, Leonard, Gonçalves, & Walker, 2000;Logemann et al, 2000;Logemann, Pauloski, Rademaker, & Kahrilas, 2002;McConnel, Cerenko, Jackson, & Guffin, Jr., 1988;Mendell & Logemann, 2007;Ohmae, Logemann, Kaiser, Hanson, & Kahrilas, 1995). Factors contributing to this variability include bolus volume, bolus consistency, age, and gender (Cook et al, 1989;Kendall, 2002;Kendall et al, 2003;Logemann et al, 2000Logemann et al, , 2002Mendell & Logemann, 2007;Ohmae et al, 1995).…”