Translation and rotation movements of the mandible during mouth opening and closing
Identifieur interne : 000120 ( Main/Exploration ); précédent : 000119; suivant : 000121Translation and rotation movements of the mandible during mouth opening and closing
Auteurs : Andrea Mapelli [Italie] ; Domenico Galante [Italie] ; Nicola Lovecchio [Italie] ; Chiarella Sforza [Italie] ; Virgilio F. Ferrario [Italie]Source :
- Clinical Anatomy [ 0897-3806 ] ; 2009-04.
English descriptors
Abstract
To assess the relative contribution of rotation and translation of the temporomandibular condyle‐disc assembly during opening and closing movements, free movements of maximum mouth opening and closing were recorded in healthy subjects (12 men, 14 women) using an optoelectronic three‐dimensional motion analyzer. For each subject, the displacement of the lower interincisal point, the path of the condylar reference point, the degree of rotation around the three orthogonal rotational axes, and the relative contribution of translation and rotation were calculated during all movement of mouth opening and closing. The distance covered by the interincisor point and the rotational angle about the transverse axis at maximum mouth opening were larger in men than in women, but the difference cancelled after correcting for mandibular radius in the sagittal plane; mandibular rotation was always larger than translation, but never approaching 100%; opening and closing translations were similar within sex, but their paths were longer in men than in women (P < 0.05); rotational angles around vertical and sagittal axes were negligible; the linear correlation between maximum mandibular opening and condylar translation was minor and not significant. In normal subjects, mouth opening and closing as modeled at the interincisor point was determined more by mandibular rotation than by translation, but in no occasion a pure rotation was found. The percentage rotation was not identical during mouth opening and closing; female and male paths were not totally coincident; no correlation between maximum mandibular opening and condylar translation was found. Clin. Anat. 22:311–318, 2009. © 2009 Wiley‐Liss, Inc.
Url:
DOI: 10.1002/ca.20756
Affiliations:
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Ferrario</name><name sortKey="Galante, Domenico" sort="Galante, Domenico" uniqKey="Galante D" first="Domenico" last="Galante">Domenico Galante</name><name sortKey="Galante, Domenico" sort="Galante, Domenico" uniqKey="Galante D" first="Domenico" last="Galante">Domenico Galante</name><name sortKey="Lovecchio, Nicola" sort="Lovecchio, Nicola" uniqKey="Lovecchio N" first="Nicola" last="Lovecchio">Nicola Lovecchio</name><name sortKey="Lovecchio, Nicola" sort="Lovecchio, Nicola" uniqKey="Lovecchio N" first="Nicola" last="Lovecchio">Nicola Lovecchio</name><name sortKey="Mapelli, Andrea" sort="Mapelli, Andrea" uniqKey="Mapelli A" first="Andrea" last="Mapelli">Andrea Mapelli</name><name sortKey="Mapelli, Andrea" sort="Mapelli, Andrea" uniqKey="Mapelli A" first="Andrea" last="Mapelli">Andrea Mapelli</name><name sortKey="Sforza, Chiarella" sort="Sforza, Chiarella" uniqKey="Sforza C" first="Chiarella" last="Sforza">Chiarella Sforza</name><name sortKey="Sforza, Chiarella" sort="Sforza, Chiarella" uniqKey="Sforza C" first="Chiarella" last="Sforza">Chiarella Sforza</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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