Tardieu, C (a), Dumitrescu, M (b), Giraudeau, A (a),
Blanc, JL (b), Cheynet, F (c), Borel, L (b)

a) Faculté d’Odontologie, Université de la Méditerranée, 27, Boulevard Jean Moulin, 13385 Marseille Cedex 5, France
b) Laboratoire de Neurosciences Intégratives et Adaptatives, UMR 6149, Université de Provence/CNRS, Pôle 3C, Case B, 3, Place Victor Hugo, 13331 Marseille Cedex 3, France
c) Service de Chirurgie Maxillo-faciale, Stomatologie, Hôpital de la Timone, 163 rue Saint Pierre, 13385 Marseille Cedex 5, France

Citation: Tardieu C, Dumitrescu M, Giraudeau A, Blanc JL, Cheynet F, Borel L. Dental occlusion and postural control in adults. Neurosci Lett. 2009 Jan 30;450(2):221-4. doi: 10.1016/j.neulet.2008.12.005

Download PDF


We studied the influence of a dental occlusion perturbation on postural control. The testswere 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 goalwas reached with an increase in the total energetic cost. Thiswork 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.

Keywords: Occlusion status, Crossbite, Balance control, Head stabilization, Motion analysis, Static and dynamic posturography

Download PDF