Modeling the biomechanics of the mandible: a three-dimensional finite element study.
Identifieur interne : 001575 ( Ncbi/Merge ); précédent : 001574; suivant : 001576Modeling the biomechanics of the mandible: a three-dimensional finite element study.
Auteurs : R T Hart [États-Unis] ; V V Hennebel ; N. Thongpreda ; W C Van Buskirk ; R C AndersonSource :
- Journal of biomechanics [ 0021-9290 ] ; 1992.
Descripteurs français
- KwdFr :
- Canine (physiologie), Condyle mandibulaire (physiologie), Contrainte mécanique, Force occlusale, Humains, Incisive (physiologie), Mandibule (physiologie), Mastication (physiologie), Modèles biologiques, Molaire (physiologie), Muscles masticateurs (physiologie), Mâchoire partiellement édentée (physiopathologie), Phénomènes biomécaniques, Prémolaire (physiologie), Tomodensitométrie, Traitement du signal assisté par ordinateur, Élasticité.
- MESH :
- physiologie : Canine, Condyle mandibulaire, Incisive, Mandibule, Mastication, Molaire, Muscles masticateurs, Prémolaire.
- physiopathologie : Mâchoire partiellement édentée.
- Contrainte mécanique, Force occlusale, Humains, Modèles biologiques, Phénomènes biomécaniques, Tomodensitométrie, Traitement du signal assisté par ordinateur, Élasticité.
English descriptors
- KwdEn :
- Bicuspid (physiology), Biomechanical Phenomena, Bite Force, Cuspid (physiology), Elasticity, Humans, Incisor (physiology), Jaw, Edentulous, Partially (physiopathology), Mandible (physiology), Mandibular Condyle (physiology), Mastication (physiology), Masticatory Muscles (physiology), Models, Biological, Molar (physiology), Signal Processing, Computer-Assisted, Stress, Mechanical, Tomography, X-Ray Computed.
- MESH :
- physiology : Bicuspid, Cuspid, Incisor, Mandible, Mandibular Condyle, Mastication, Masticatory Muscles, Molar.
- physiopathology : Jaw, Edentulous, Partially.
- Biomechanical Phenomena, Bite Force, Elasticity, Humans, Models, Biological, Signal Processing, Computer-Assisted, Stress, Mechanical, Tomography, X-Ray Computed.
Abstract
Three-dimensional finite element models of a partially edentulated human mandible were generated to calculate the mechanical response to simulated isometric biting and mastication loads. The level of mesh refinement was established via a convergence test and showed that a model with over 30,000 degrees of freedom was required to obtain analysis accuracy. The functional loading cases included muscle loading based on an algorithm that assigns muscle forces in accordance with muscle cross-sectional area, while maintaining static equilibrium. Results were found for isometric application of unilateral and bilateral bite and mastication loading, and two different sets of displacement boundary conditions were imposed at the condyles. The mechanical response is shown in terms of displacements, principal strains, and a new measure called the 'mechanical intensity scalar'. For each load case studied, there was substantial bending in the molar region of the corpus and high tensile strains in the anterior portion of the ramus.
PubMed: 1564061
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pubmed:1564061Le document en format XML
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<author><name sortKey="Hennebel, V V" sort="Hennebel, V V" uniqKey="Hennebel V" first="V V" last="Hennebel">V V Hennebel</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bicuspid (physiology)</term>
<term>Biomechanical Phenomena</term>
<term>Bite Force</term>
<term>Cuspid (physiology)</term>
<term>Elasticity</term>
<term>Humans</term>
<term>Incisor (physiology)</term>
<term>Jaw, Edentulous, Partially (physiopathology)</term>
<term>Mandible (physiology)</term>
<term>Mandibular Condyle (physiology)</term>
<term>Mastication (physiology)</term>
<term>Masticatory Muscles (physiology)</term>
<term>Models, Biological</term>
<term>Molar (physiology)</term>
<term>Signal Processing, Computer-Assisted</term>
<term>Stress, Mechanical</term>
<term>Tomography, X-Ray Computed</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Canine (physiologie)</term>
<term>Condyle mandibulaire (physiologie)</term>
<term>Contrainte mécanique</term>
<term>Force occlusale</term>
<term>Humains</term>
<term>Incisive (physiologie)</term>
<term>Mandibule (physiologie)</term>
<term>Mastication (physiologie)</term>
<term>Modèles biologiques</term>
<term>Molaire (physiologie)</term>
<term>Muscles masticateurs (physiologie)</term>
<term>Mâchoire partiellement édentée (physiopathologie)</term>
<term>Phénomènes biomécaniques</term>
<term>Prémolaire (physiologie)</term>
<term>Tomodensitométrie</term>
<term>Traitement du signal assisté par ordinateur</term>
<term>Élasticité</term>
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<keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Canine</term>
<term>Condyle mandibulaire</term>
<term>Incisive</term>
<term>Mandibule</term>
<term>Mastication</term>
<term>Molaire</term>
<term>Muscles masticateurs</term>
<term>Prémolaire</term>
</keywords>
<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Bicuspid</term>
<term>Cuspid</term>
<term>Incisor</term>
<term>Mandible</term>
<term>Mandibular Condyle</term>
<term>Mastication</term>
<term>Masticatory Muscles</term>
<term>Molar</term>
</keywords>
<keywords scheme="MESH" qualifier="physiopathologie" xml:lang="fr"><term>Mâchoire partiellement édentée</term>
</keywords>
<keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Jaw, Edentulous, Partially</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Biomechanical Phenomena</term>
<term>Bite Force</term>
<term>Elasticity</term>
<term>Humans</term>
<term>Models, Biological</term>
<term>Signal Processing, Computer-Assisted</term>
<term>Stress, Mechanical</term>
<term>Tomography, X-Ray Computed</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr"><term>Contrainte mécanique</term>
<term>Force occlusale</term>
<term>Humains</term>
<term>Modèles biologiques</term>
<term>Phénomènes biomécaniques</term>
<term>Tomodensitométrie</term>
<term>Traitement du signal assisté par ordinateur</term>
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<front><div type="abstract" xml:lang="en">Three-dimensional finite element models of a partially edentulated human mandible were generated to calculate the mechanical response to simulated isometric biting and mastication loads. The level of mesh refinement was established via a convergence test and showed that a model with over 30,000 degrees of freedom was required to obtain analysis accuracy. The functional loading cases included muscle loading based on an algorithm that assigns muscle forces in accordance with muscle cross-sectional area, while maintaining static equilibrium. Results were found for isometric application of unilateral and bilateral bite and mastication loading, and two different sets of displacement boundary conditions were imposed at the condyles. The mechanical response is shown in terms of displacements, principal strains, and a new measure called the 'mechanical intensity scalar'. For each load case studied, there was substantial bending in the molar region of the corpus and high tensile strains in the anterior portion of the ramus.</div>
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<Abstract><AbstractText>Three-dimensional finite element models of a partially edentulated human mandible were generated to calculate the mechanical response to simulated isometric biting and mastication loads. The level of mesh refinement was established via a convergence test and showed that a model with over 30,000 degrees of freedom was required to obtain analysis accuracy. The functional loading cases included muscle loading based on an algorithm that assigns muscle forces in accordance with muscle cross-sectional area, while maintaining static equilibrium. Results were found for isometric application of unilateral and bilateral bite and mastication loading, and two different sets of displacement boundary conditions were imposed at the condyles. The mechanical response is shown in terms of displacements, principal strains, and a new measure called the 'mechanical intensity scalar'. For each load case studied, there was substantial bending in the molar region of the corpus and high tensile strains in the anterior portion of the ramus.</AbstractText>
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