Influence of Implant Position on Stress Distribution in Implant-Assisted Distal Extension Removable Partial Dentures: A 3D Finite Element Analysis
Identifieur interne : 005811 ( Ncbi/Curation ); précédent : 005810; suivant : 005812Influence of Implant Position on Stress Distribution in Implant-Assisted Distal Extension Removable Partial Dentures: A 3D Finite Element Analysis
Auteurs : Yeganeh Memari [Iran] ; Allahyar Geramy [Iran] ; Amir Fayaz [Iran] ; Shirin Rezvani Habib Abadi [Iran] ; Yasaman MansouriSource :
- Journal of Dentistry (Tehran, Iran) [ 1735-2150 ] ; 2014.
Abstract
Distal extension removable partial denture is a prosthesis with lack of distal dental support with a 13-fold difference in resiliency between the mucosa and the periodontal ligament, resulting in leverage during compression forces. It may be potentially destructive to the abutments and the surrounding tissues. The aim of this study was to assess the effect of implant location on stress distribution, in distal extension implant assisted removable partial dentures.
Three-dimensional models of a bilateral distal extension partially edentulous mandible containing anterior teeth and first premolar in both sides of the arch, a partial removable denture and an implant (4×10mm) were designed. With the aid of the finite element program ANSYS 8.0, the models were meshed and strictly vertical forces of 10 N were applied to each cusp tip. Displacement and von Mises Maps were plotted for visualization of results.
When an implant was placed in the second premolar region, the highest stress on implant, abutment tooth and cancellous bone was shown. The lowest stress was shown on implant and bone in the 1st molar area.
Implants located in the first molar area showed the least distribution of stresses in the analyzed models.
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PubMed: 25628678
PubMed Central: 4290771
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Analysis</title><author><name sortKey="Memari, Yeganeh" sort="Memari, Yeganeh" uniqKey="Memari Y" first="Yeganeh" last="Memari">Yeganeh Memari</name><affiliation wicri:level="1"><nlm:aff id="af1-jod-11-523">Assistant Professor, Department of Prosthodontics, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Assistant Professor, Department of Prosthodontics, Dental School, Shahid Beheshti University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Geramy, Allahyar" sort="Geramy, Allahyar" uniqKey="Geramy A" first="Allahyar" last="Geramy">Allahyar Geramy</name><affiliation wicri:level="1"><nlm:aff id="af2-jod-11-523">Professor, Dental Research Center Dentistry Research Institute, Tehran University of Medical Sciences, Department of Orthodontics, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Professor, Dental Research Center Dentistry Research Institute, Tehran University of Medical Sciences, Department of Orthodontics, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Fayaz, Amir" sort="Fayaz, Amir" uniqKey="Fayaz A" first="Amir" last="Fayaz">Amir Fayaz</name><affiliation wicri:level="1"><nlm:aff id="af3-jod-11-523">Assistant Professor, Department of Prosthodontics, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Assistant Professor, Department of Prosthodontics, Dental School, Shahid Beheshti University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Rezvani Habib Abadi, Shirin" sort="Rezvani Habib Abadi, Shirin" uniqKey="Rezvani Habib Abadi S" first="Shirin" last="Rezvani Habib Abadi">Shirin Rezvani Habib Abadi</name><affiliation wicri:level="1"><nlm:aff id="af4-jod-11-523">Assistant Professor, Department of Prosthodontics, Dental School, Qazvin University of Medical Sciences, Qazvin, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Assistant Professor, Department of Prosthodontics, Dental School, Qazvin University of Medical Sciences, Qazvin</wicri:regionArea><wicri:noRegion>Qazvin</wicri:noRegion></affiliation></author><author><name sortKey="Mansouri, Yasaman" sort="Mansouri, Yasaman" uniqKey="Mansouri Y" first="Yasaman" last="Mansouri">Yasaman Mansouri</name><affiliation><nlm:aff id="af5-jod-11-523">Private Practice</nlm:aff></affiliation></author></analytic><series><title level="j">Journal of Dentistry (Tehran, Iran)</title><idno type="ISSN">1735-2150</idno><idno type="eISSN">2008-2185</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Objective:</title><p>Distal extension removable partial denture is a prosthesis with lack of distal dental support with a 13-fold difference in resiliency between the mucosa and the periodontal ligament, resulting in leverage during compression forces. It may be potentially destructive to the abutments and the surrounding tissues. The aim of this study was to assess the effect of implant location on stress distribution, in distal extension implant assisted removable partial dentures.</p></sec><sec><title>Materials and Methods:</title><p>Three-dimensional models of a bilateral distal extension partially edentulous mandible containing anterior teeth and first premolar in both sides of the arch, a partial removable denture and an implant (4×10mm) were designed. With the aid of the finite element program ANSYS 8.0, the models were meshed and strictly vertical forces of 10 N were applied to each cusp tip. Displacement and von Mises Maps were plotted for visualization of results.</p></sec><sec><title>Results:</title><p>When an implant was placed in the second premolar region, the highest stress on implant, abutment tooth and cancellous bone was shown. The lowest stress was shown on implant and bone in the 1<sup>st</sup> molar area.</p></sec><sec><title>Conclusion:</title><p>Implants located in the first molar area showed the least distribution of stresses in the analyzed models.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Cunha, Ld" uniqKey="Cunha L">LD Cunha</name></author><author><name sortKey="Pellizzer, Ep" uniqKey="Pellizzer E">EP Pellizzer</name></author><author><name sortKey="Verri, Fr" uniqKey="Verri F">FR Verri</name></author><author><name sortKey="Pereira, Ja" uniqKey="Pereira J">JA Pereira</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Tebrock, Oc" uniqKey="Tebrock O">OC Tebrock</name></author><author><name sortKey="Rohen, Rm" uniqKey="Rohen R">RM Rohen</name></author><author><name sortKey="Fenster, Rk" uniqKey="Fenster R">RK Fenster</name></author><author><name sortKey="Pelleu, Gb" uniqKey="Pelleu G">GB 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