Dental occlusion and postural control in adults

作者：Tardieu Corinne; Dumitrescu Michel; Giraudeau Anne; Blanc Jean Luc; Cheynet Francois; Borel Liliane^*

来源：Neuroscience Letters, 2009, 450(2): 221-224.

DOI：10.1016/j.neulet.2008.12.005

• Occlusion status
• Crossbite
• Balance control
• Head stabilization
• Motion analysis
• Static and dynamic posturography

We studied the influence of a dental occlusion perturbation on postural control. The tests were performed in three dental occlusion conditions: (Rest Position: no dental contact, Maximal Intercuspal Occlusion: maximal dental contact, and Thwarted Laterality Occlusion: simulation of a dental malocclusion) and four postural conditions: static (stable platform) and dynamic (unstable platform), with eyes open and eyes closed. A decay of postural control was noted between the Rest Position and Thwarted Laterality Occlusion conditions with regard to average speed and power indexes in dynamic conditions and with eyes closed. However, the head position and stabilization were not different from those in the other experimental conditions, which means that the same functional goal was reached with an increase in the total energetic cost. This work shows that dental occlusion differently affects postural control, depending on the static or dynamic conditions. Indeed, dental occlusion impaired postural control only in dynamic postural conditions and in absence of visual cues. The sensory information linked to the dental occlusion comes into effect only during difficult postural tasks and its importance grows as the other sensory cues become scarce.

• 出版日期2009-1-30