EdenteV2, France, Analysis, bibRecord, 000232

Neural symmetry and functional asymmetry of the mandible

Identifieur interne : 000232 ( France/Analysis ); précédent : 000231; suivant : 000233

Neural symmetry and functional asymmetry of the mandible

Auteurs : Guillaume Captier [France] ; Julien Lethuilier [France] ; Mohamed Oussaid [France] ; Francois Canovas [France] ; Francois Bonnel [France]

Source :

Surgical and radiologic anatomy : (Print) [ 0930-1038 ] ; 2006.

RBID : Pascal:06-0383583

Descripteurs français

KwdFr :
- Analyse de variance, Asymétrie faciale, Cadavre, Humains, Latéralité fonctionnelle (physiologie), Mandibule (anatomie et histologie), Mâchoire édentée, Poids et mesures du corps ().
MESH :
- anatomie et histologie : Mandibule.
- physiologie : Latéralité fonctionnelle.
Pascal (Inist)
- Analyse de variance, Asymétrie faciale, Cadavre, Humains, Mâchoire édentée, Poids et mesures du corps, Système nerveux, Symétrie, Asymétrie, Mandibule, Face, Anatomie, Biométrie corporelle, Biologie clinique, Nerf mandibulaire, Médecine, Chirurgie, Traitement.
Wicri :
- topic : Anatomie, Médecine, Chirurgie.

English descriptors

KwdEn :
- Analysis of Variance, Anatomy, Asymmetry, Body Weights and Measures (methods), Cadaver, Clinical biology, Corporal biometry, Face, Facial Asymmetry, Functional Laterality (physiology), Humans, Jaw, Edentulous, Mandible, Mandible (anatomy & histology), Mandibular nerve, Medicine, Nervous system, Surgery, Symmetry, Treatment.
MESH :
- anatomy & histology : Mandible.
- methods : Body Weights and Measures.
- physiology : Functional Laterality.
- Analysis of Variance, Cadaver, Facial Asymmetry, Humans, Jaw, Edentulous.

Abstract

Even in the absence of malformation or skull base asymmetry, the mandible may be physiologically asymmetric and this remains a major challenge in the orthodontic treatment. The mandible is a bone formed by a primary subunit, i.e., the neural part, with different functional secondary subunits, so we suggest that in a normal mandible the asymmetry was caused by the secondary functional subunit and the neural part is nearly symmetric. Eighty-three dry human mandible samples were studied. The measurements of the size of the mandible (corpus, ramus, mandible notch, condylar process, the angle of the mandible) and the neural subunit (the mandibular canal and the position of the mental and mandibular foramina) were measured bilaterally. The left and right sides were compared according to the dental status: 60 dentate and 23 edentulous mandibles. The calculation of the symmetry was based on the paired Student t test, the absolute difference |R-L| and the relative absolute difference |R-L|/|R+L|×100. The mandibular canal and the position of the foramina were symmetric, except for the position of the mandibular foramen in relation to the mandible notch. The symmetry was not modified by the dental status. The total length of the mandible and the length of the ramus were greater on the left side independently from the dental status. The length of the corpus and the mandible angle were symmetric in each group. The mandible notch was always asymmetric and its height was greater in the dentate group. The condylar process was the most asymmetric structure in each group. The primary subunit of the mandible, surrounding the mandibular canal, is a symmetric component of the mandible and is not modified by the dental status. The angle of the mandible between the corpus and ramus is another symmetric parameter that is important for the facial architecture. The ramus and especially the mandibular notch as well as the condylar process are the most asymmetric subunits influenced by the functional matrices.

Affiliations:

Links to Exploration step

Pascal:06-0383583

Le document en format XML

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<term>Corporal biometry</term>
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<front><div type="abstract" xml:lang="en">Even in the absence of malformation or skull base asymmetry, the mandible may be physiologically asymmetric and this remains a major challenge in the orthodontic treatment. The mandible is a bone formed by a primary subunit, i.e., the neural part, with different functional secondary subunits, so we suggest that in a normal mandible the asymmetry was caused by the secondary functional subunit and the neural part is nearly symmetric. Eighty-three dry human mandible samples were studied. The measurements of the size of the mandible (corpus, ramus, mandible notch, condylar process, the angle of the mandible) and the neural subunit (the mandibular canal and the position of the mental and mandibular foramina) were measured bilaterally. The left and right sides were compared according to the dental status: 60 dentate and 23 edentulous mandibles. The calculation of the symmetry was based on the paired Student t test, the absolute difference |R-L| and the relative absolute difference |R-L|/|R+L|×100. The mandibular canal and the position of the foramina were symmetric, except for the position of the mandibular foramen in relation to the mandible notch. The symmetry was not modified by the dental status. The total length of the mandible and the length of the ramus were greater on the left side independently from the dental status. The length of the corpus and the mandible angle were symmetric in each group. The mandible notch was always asymmetric and its height was greater in the dentate group. The condylar process was the most asymmetric structure in each group. The primary subunit of the mandible, surrounding the mandibular canal, is a symmetric component of the mandible and is not modified by the dental status. The angle of the mandible between the corpus and ramus is another symmetric parameter that is important for the facial architecture. The ramus and especially the mandibular notch as well as the condylar process are the most asymmetric subunits influenced by the functional matrices.</div>
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Neural symmetry and functional asymmetry of the mandible

Neural symmetry and functional asymmetry of the mandible

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Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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