EdenteV2, Main, Exploration, bibRecord, 00A961

Location of implants in the interforaminal region of the mandible and the consequences for the design of the superstructure.

Identifieur interne : 00A961 ( Main/Exploration ); précédent : 00A960; suivant : 00A962

Location of implants in the interforaminal region of the mandible and the consequences for the design of the superstructure.

Auteurs : H J Meijer [Pays-Bas] ; F J Starmans ; W H Steen ; F. Bosman

Source :

Journal of oral rehabilitation [ 0305-182X ] ; 1994.

RBID : pubmed:8133388

Descripteurs français

English descriptors

KwdEn :
- Bite Force, Dental Implants, Dental Prosthesis Design, Dental Stress Analysis, Denture Retention (instrumentation), Denture, Overlay, Humans, Jaw, Edentulous (physiopathology), Mandible (physiopathology), Patient Care Planning.
MESH :
- chemical : Dental Implants.
- instrumentation : Denture Retention.
- physiopathology : Jaw, Edentulous, Mandible.
- Bite Force, Dental Prosthesis Design, Dental Stress Analysis, Denture, Overlay, Humans, Patient Care Planning.

Abstract

The location and the number of implants to support an overdenture is of major importance for the superstructure design. Sometimes, jaw bone anatomy or posteriorly placed implants enforce the use of an angular bar to achieve a position above the alveolar ridge. Loads on such a bar may introduce a moment on the implants which can result in high bone stresses and eventually the loss of the implants. This study on stress distribution in the bone around the implants in an edentulous mandible was performed using a three-dimensional finite element model. One model with two implants placed just anteriorly of the mental foramen and connected with an anteriorly placed bar, following the curvature of the alveolar ridge, was compared with two other designs. First with a similar model but now without a bar and secondly with a model with four implants connected with straight bars. It is concluded that loading a bar, which is placed anteriorly of the interconnecting line between two implants, causes extremely large compressive and tensile stress concentrations in the bone around the implants. Therefore, in those cases, it is advised not to connect the implants or, in case a bar-clip attachment is preferred, to place additional implants in the frontal region.

PubMed: 8133388

Affiliations:

Pays-Bas

Le document en format XML

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<author><name sortKey="Meijer, H J" sort="Meijer, H J" uniqKey="Meijer H" first="H J" last="Meijer">H J Meijer</name>
<affiliation wicri:level="1"><nlm:affiliation>Department of Oral-Maxillofacial Surgery, Prosthodontics and Special Dental Care, Faculty of Medicine, University of Utrecht, The Netherlands.</nlm:affiliation>
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<author><name sortKey="Steen, W H" sort="Steen, W H" uniqKey="Steen W" first="W H" last="Steen">W H Steen</name>
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<term>Denture Retention (instrumentation)</term>
<term>Denture, Overlay</term>
<term>Humans</term>
<term>Jaw, Edentulous (physiopathology)</term>
<term>Mandible (physiopathology)</term>
<term>Patient Care Planning</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Analyse du stress dentaire</term>
<term>Conception de prothèse dentaire</term>
<term>Force occlusale</term>
<term>Humains</term>
<term>Implants dentaires</term>
<term>Mandibule (physiopathologie)</term>
<term>Mâchoire édentée (physiopathologie)</term>
<term>Overdenture</term>
<term>Planification des soins du patient</term>
<term>Rétention d'appareil de prothèse dentaire (instrumentation)</term>
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<keywords scheme="MESH" qualifier="physiopathologie" xml:lang="fr"><term>Mandibule</term>
<term>Mâchoire édentée</term>
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<term>Mandible</term>
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<term>Implants dentaires</term>
<term>Overdenture</term>
<term>Planification des soins du patient</term>
<term>Rétention d'appareil de prothèse dentaire</term>
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<front><div type="abstract" xml:lang="en">The location and the number of implants to support an overdenture is of major importance for the superstructure design. Sometimes, jaw bone anatomy or posteriorly placed implants enforce the use of an angular bar to achieve a position above the alveolar ridge. Loads on such a bar may introduce a moment on the implants which can result in high bone stresses and eventually the loss of the implants. This study on stress distribution in the bone around the implants in an edentulous mandible was performed using a three-dimensional finite element model. One model with two implants placed just anteriorly of the mental foramen and connected with an anteriorly placed bar, following the curvature of the alveolar ridge, was compared with two other designs. First with a similar model but now without a bar and secondly with a model with four implants connected with straight bars. It is concluded that loading a bar, which is placed anteriorly of the interconnecting line between two implants, causes extremely large compressive and tensile stress concentrations in the bone around the implants. Therefore, in those cases, it is advised not to connect the implants or, in case a bar-clip attachment is preferred, to place additional implants in the frontal region.</div>
</front>
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<name sortKey="Steen, W H" sort="Steen, W H" uniqKey="Steen W" first="W H" last="Steen">W H Steen</name>
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Serveur d'exploration sur le patient édenté

Location of implants in the interforaminal region of the mandible and the consequences for the design of the superstructure.

Location of implants in the interforaminal region of the mandible and the consequences for the design of the superstructure.

Source :

Descripteurs français

English descriptors

Abstract

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

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

	Serveur d'exploration sur le patient édenté
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