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Area moments of inertia as a measure of the mandible stiffness of the implant patient.

Identifieur interne : 002B76 ( PubMed/Curation ); précédent : 002B75; suivant : 002B77

Area moments of inertia as a measure of the mandible stiffness of the implant patient.

Auteurs : Stig Hansson [Suède] ; Annika Ekestubbe

Source :

Clinical oral implants research [ 0905-7161 ] ; 2004.

RBID : pubmed:15248880

Descripteurs français

KwdFr :
- Analyse des éléments finis, Analyse du stress dentaire, Flexibilité, Force occlusale, Humains, Implants dentaires, Mandibule (physiologie), Mâchoire édentée (physiopathologie), Pose d'implant dentaire endo-osseux, Élasticité.
MESH :
- physiologie : Mandibule.
- physiopathologie : Mâchoire édentée.
- Analyse des éléments finis, Analyse du stress dentaire, Flexibilité, Force occlusale, Humains, Implants dentaires, Pose d'implant dentaire endo-osseux, Élasticité.

English descriptors

KwdEn :
- Bite Force, Dental Implantation, Endosseous, Dental Implants, Dental Stress Analysis, Elasticity, Finite Element Analysis, Humans, Jaw, Edentulous (physiopathology), Mandible (physiology), Pliability.
MESH :
- chemical : Dental Implants.
- physiology : Mandible.
- physiopathology : Jaw, Edentulous.
- Bite Force, Dental Implantation, Endosseous, Dental Stress Analysis, Elasticity, Finite Element Analysis, Humans, Pliability.

Abstract

It was hypothesized that the bending stiffness of the mandible is an important biomechanical parameter in implant dentistry. It was shown how this bending stiffness can be estimated by means of the principal area moments of inertia of the cortical and cancellous cross-sections as obtained by computed tomography, some image processing and subsequent calculation. It was found that the contribution of the cancellous bone to the bending stiffness is normally insignificant and that the principal area moments of inertia of the cortical cross-section show large variations, depending on the degree of resorption. It was furthermore found that the variations in the principal area moments of inertia of the cortical cross-section in one and the same potential implant patient were minor. Finally, in a three-dimensional finite element study, it was found that the peak bone stresses adjacent to implants, resulting from a standardized load at the distal end of an implant-supported bridge, were inversely related to the magnitude of the principal area moment of inertia about the horizontal axis of the cortical cross-section. It was concluded that the principal area moments of inertia of the cortical cross-section and the angulation of the principal axes of inertia might be useful as a quantitative characterization of the mandible stiffness in clinical research and perhaps also in clinical practice.

DOI: 10.1111/j.1600-0501.2004.01021.x
PubMed: 15248880

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Le document en format XML

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<term>Humains</term>
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<front><div type="abstract" xml:lang="en">It was hypothesized that the bending stiffness of the mandible is an important biomechanical parameter in implant dentistry. It was shown how this bending stiffness can be estimated by means of the principal area moments of inertia of the cortical and cancellous cross-sections as obtained by computed tomography, some image processing and subsequent calculation. It was found that the contribution of the cancellous bone to the bending stiffness is normally insignificant and that the principal area moments of inertia of the cortical cross-section show large variations, depending on the degree of resorption. It was furthermore found that the variations in the principal area moments of inertia of the cortical cross-section in one and the same potential implant patient were minor. Finally, in a three-dimensional finite element study, it was found that the peak bone stresses adjacent to implants, resulting from a standardized load at the distal end of an implant-supported bridge, were inversely related to the magnitude of the principal area moment of inertia about the horizontal axis of the cortical cross-section. It was concluded that the principal area moments of inertia of the cortical cross-section and the angulation of the principal axes of inertia might be useful as a quantitative characterization of the mandible stiffness in clinical research and perhaps also in clinical practice.</div>
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<Abstract><AbstractText>It was hypothesized that the bending stiffness of the mandible is an important biomechanical parameter in implant dentistry. It was shown how this bending stiffness can be estimated by means of the principal area moments of inertia of the cortical and cancellous cross-sections as obtained by computed tomography, some image processing and subsequent calculation. It was found that the contribution of the cancellous bone to the bending stiffness is normally insignificant and that the principal area moments of inertia of the cortical cross-section show large variations, depending on the degree of resorption. It was furthermore found that the variations in the principal area moments of inertia of the cortical cross-section in one and the same potential implant patient were minor. Finally, in a three-dimensional finite element study, it was found that the peak bone stresses adjacent to implants, resulting from a standardized load at the distal end of an implant-supported bridge, were inversely related to the magnitude of the principal area moment of inertia about the horizontal axis of the cortical cross-section. It was concluded that the principal area moments of inertia of the cortical cross-section and the angulation of the principal axes of inertia might be useful as a quantitative characterization of the mandible stiffness in clinical research and perhaps also in clinical practice.</AbstractText>
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Area moments of inertia as a measure of the mandible stiffness of the implant patient.

Area moments of inertia as a measure of the mandible stiffness of the implant patient.

Source :

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)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki