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Loading of bone surrounding implants through three‐unit fixed partial denture fixation: a finite‐element analysis based on in vitro and in vivo strain measurements

Identifieur interne : 006F11 ( Main/Exploration ); précédent : 006F10; suivant : 006F12

Loading of bone surrounding implants through three‐unit fixed partial denture fixation: a finite‐element analysis based on in vitro and in vivo strain measurements

Auteurs : Siegfried M. Heckmann [Allemagne] ; Matthias Karl [Allemagne] ; Manfred G. Wichmann [Allemagne] ; Werner Winter [Allemagne] ; Friedrich Graef [Allemagne] ; Thomas D. Taylor [États-Unis]

Source :

Clinical Oral Implants Research [ 0905-7161 ] ; 2006-06.

RBID : ISTEX:3523C7D88F222F14F1CE4291E87AF369773A571E

English descriptors

Abstract

Abstract: Implant‐borne fixed partial dentures (FPDs), whether cementable or screwable superstructures, ought to display a true passive fit. The objective of this in vivo‐based finite‐element analysis is, therefore, to quantify the degree of stress which occurs in the bone around the implants as a result of the fixation of cemented and screw‐retained FPDs. On the basis of a simulated patient situation with two implants, six groups of implant‐supported superstructures containing 10 samples each were fabricated. Strain gauges which were mounted on the pontics of the restorations were subsequently used to take in vivo measurements (Ethics Commission Approval No. 2315). Taking the values obtained as a basis, the von Mises equivalent stress was chosen to illustrate bone loading in three‐dimensional finite‐element models. Superstructure fixation caused residual interface stress as high as 30 MPa. Similar stress magnitudes can be observed for axial implant loading of 200 N. Assuming that the axial loading of a single implant with 200 N is within the bone's physiological range, it can be concluded that the degree of stress resulting from the fixation of superstructures alone does not constitute a risk.

Url:

https://api.istex.fr/document/3523C7D88F222F14F1CE4291E87AF369773A571E/fulltext/pdf

DOI: 10.1111/j.1600-0501.2005.01177.x

Affiliations:

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Le document en format XML

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<term>Axial force</term>
<term>Axial loading</term>
<term>Bone loading</term>
<term>Bone loading model</term>
<term>Cementable</term>
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<term>Dental implants</term>
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<term>Ethics commission approval</term>
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<term>Gold cylinders</term>
<term>Great variation</term>
<term>Heckmann</term>
<term>Higher stress resolution</term>
<term>Implant</term>
<term>Implant dentistry</term>
<term>Implant failure</term>
<term>Implant prosthodontics</term>
<term>Implant restorations</term>
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<term>International journal</term>
<term>Loading</term>
<term>Loading situation</term>
<term>Measurement model</term>
<term>Measurement period</term>
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<term>Mises equivalent stress</term>
<term>Moment loading</term>
<term>Nobel biocare</term>
<term>Occlusal screw</term>
<term>Oral cavity</term>
<term>Oral impl</term>
<term>Oral implantology</term>
<term>Oral implants</term>
<term>Oral maxillofacial implants</term>
<term>Osseointegrated implants</term>
<term>Partial denture</term>
<term>Partial dentures</term>
<term>Patient situation</term>
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<term>Prosthetic dentistry</term>
<term>Prosthodontic problems</term>
<term>Repositioning technique impressions</term>
<term>Screw retention</term>
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<term>Static implant loading</term>
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<term>Stress state</term>
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<term>Testing series</term>
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<term>Vertical loading</term>
<term>Vivo</term>
<term>Vivo measurement</term>
<term>Vivo strain levels</term>
<term>Vivo strain measurements</term>
<term>Vivo strain values</term>
<term>Xation</term>
<term>Xation screws</term>
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<keywords scheme="Teeft" xml:lang="en"><term>Absolute values</term>
<term>Apical area</term>
<term>Axial</term>
<term>Axial force</term>
<term>Axial loading</term>
<term>Bone loading</term>
<term>Bone loading model</term>
<term>Cementable</term>
<term>Cementable fpds</term>
<term>Cortical layer</term>
<term>Dental implants</term>
<term>Dentistry</term>
<term>Denture</term>
<term>Ethics commission approval</term>
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<term>Implant failure</term>
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<term>Implants research</term>
<term>International journal</term>
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<term>Loading situation</term>
<term>Measurement model</term>
<term>Measurement period</term>
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<term>Oral implants</term>
<term>Oral maxillofacial implants</term>
<term>Osseointegrated implants</term>
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<front><div type="abstract">Abstract: Implant‐borne fixed partial dentures (FPDs), whether cementable or screwable superstructures, ought to display a true passive fit. The objective of this in vivo‐based finite‐element analysis is, therefore, to quantify the degree of stress which occurs in the bone around the implants as a result of the fixation of cemented and screw‐retained FPDs. On the basis of a simulated patient situation with two implants, six groups of implant‐supported superstructures containing 10 samples each were fabricated. Strain gauges which were mounted on the pontics of the restorations were subsequently used to take in vivo measurements (Ethics Commission Approval No. 2315). Taking the values obtained as a basis, the von Mises equivalent stress was chosen to illustrate bone loading in three‐dimensional finite‐element models. Superstructure fixation caused residual interface stress as high as 30 MPa. Similar stress magnitudes can be observed for axial implant loading of 200 N. Assuming that the axial loading of a single implant with 200 N is within the bone's physiological range, it can be concluded that the degree of stress resulting from the fixation of superstructures alone does not constitute a risk.</div>
</front>
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<affiliations><list><country><li>Allemagne</li>
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<li>Connecticut</li>
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Loading of bone surrounding implants through three‐unit fixed partial denture fixation: a finite‐element analysis based on in vitro and in vivo strain measurements

Loading of bone surrounding implants through three‐unit fixed partial denture fixation: a finite‐element analysis based on in vitro and in vivo strain measurements

Source :

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