Finite Element Analysis of Soft-lined Mandibular Complete Denture and its Supporting Structures
Identifieur interne : 003277 ( Main/Curation ); précédent : 003276; suivant : 003278Finite Element Analysis of Soft-lined Mandibular Complete Denture and its Supporting Structures
Auteurs : Katayoun Sadr [Iran] ; Jahangir Alipour [Iran] ; Fateme Heidary [Iran]Source :
- Journal of Dental Research, Dental Clinics, Dental Prospects [ 2008-210X ] ; 2012.
Abstract
There are many edentulous people with severely resorbed residual ridges and non-resilient lin-ing mucosa that are unable to tolerate occlusal forces during functional and parafunctional movements. Lining the tissue surface of dentures with a flexible material can theoretically distribute and absorb forces with cushioning effect. The aim of this study was to evaluate the effect of a soft liner on stress levels in mandibular complete denture and its supporting struc-tures by finite element analysis.
A simplified 3-dimensional finite element model of relatively resorbed mandible, mucosa, denture and a soft liner was prepared. Then the model, with and without soft liner, underwent normal vertical and lateral occlusal forces. The stresses were analyzed using the ANSYS 12 software.
Using the soft liner increased stress levels up to 18.5% and 30% in the cortical bone and mucosa, respectively, after vertical load was applied in the incisor region. Application of bilateral vertical load on the molar area increased stress in cortical bone u to 44% and in the mucosa up to 29%. Unilateral loading in the canine area increased stress level in the mucosa up to 63.5%. The highest stress was seen at denture base followed by the cortical bone.
Use of soft liners increased stress in denture supporting structures. Higher level of stress concentration was observed primarily in the denture base followed by the cortical bone.
Url:
DOI: 10.5681/joddd.2012.009
PubMed: 22991634
PubMed Central: 3444969
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Tabriz, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>PhD Student of Agricultural Machinery, Faculty of Agriculture, University of Tabriz</wicri:regionArea><wicri:noRegion>University of Tabriz</wicri:noRegion></affiliation></author><author><name sortKey="Heidary, Fateme" sort="Heidary, Fateme" uniqKey="Heidary F" first="Fateme" last="Heidary">Fateme Heidary</name><affiliation wicri:level="1"><nlm:aff id="A03">Post-graduate Student, Department of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Post-graduate Student, Department of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz</wicri:regionArea><wicri:noRegion>Tabriz</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">22991634</idno><idno type="pmc">3444969</idno><idno 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xml:lang="en" level="a" type="main">Finite Element Analysis of Soft-lined Mandibular Complete Denture and its Supporting Structures</title><author><name sortKey="Sadr, Katayoun" sort="Sadr, Katayoun" uniqKey="Sadr K" first="Katayoun" last="Sadr">Katayoun Sadr</name><affiliation wicri:level="1"><nlm:aff id="A01">Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz</wicri:regionArea><wicri:noRegion>Tabriz</wicri:noRegion></affiliation></author><author><name sortKey="Alipour, Jahangir" sort="Alipour, Jahangir" uniqKey="Alipour J" first="Jahangir" last="Alipour">Jahangir Alipour</name><affiliation wicri:level="1"><nlm:aff id="A02">PhD Student of Agricultural Machinery, Faculty of Agriculture, University of Tabriz, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>PhD Student of Agricultural Machinery, Faculty of Agriculture, University of Tabriz</wicri:regionArea><wicri:noRegion>University of Tabriz</wicri:noRegion></affiliation></author><author><name sortKey="Heidary, Fateme" sort="Heidary, Fateme" uniqKey="Heidary F" first="Fateme" last="Heidary">Fateme Heidary</name><affiliation wicri:level="1"><nlm:aff id="A03">Post-graduate Student, Department of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Post-graduate Student, Department of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz</wicri:regionArea><wicri:noRegion>Tabriz</wicri:noRegion></affiliation></author></analytic><series><title level="j">Journal of Dental Research, Dental Clinics, Dental Prospects</title><idno type="ISSN">2008-210X</idno><idno type="eISSN">2008-2118</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec id="st1" sec-type="Background and aims"><title>Background and aims</title><p>There are many edentulous people with severely resorbed residual ridges and non-resilient lin-ing mucosa that are unable to tolerate occlusal forces during functional and parafunctional movements. Lining the tissue surface of dentures with a flexible material can theoretically distribute and absorb forces with cushioning effect. The aim of this study was to evaluate the effect of a soft liner on stress levels in mandibular complete denture and its supporting struc-tures by finite element analysis.
</p></sec><sec id="st2" sec-type="Materials and methods"><title>Materials and methods</title><p>A simplified 3-dimensional finite element model of relatively resorbed mandible, mucosa, denture and a soft liner was prepared. Then the model, with and without soft liner, underwent normal vertical and lateral occlusal forces. The stresses were analyzed using the ANSYS 12 software.
</p></sec><sec id="st3" sec-type="Results"><title>Results</title><p>Using the soft liner increased stress levels up to 18.5% and 30% in the cortical bone and mucosa, respectively, after vertical load was applied in the incisor region. Application of bilateral vertical load on the molar area increased stress in cortical bone u to 44% and in the mucosa up to 29%. Unilateral loading in the canine area increased stress level in the mucosa up to 63.5%. The highest stress was seen at denture base followed by the cortical bone.
</p></sec><sec id="st4" sec-type="Conclusion"><title>Conclusion</title><p> Use of soft liners increased stress in denture supporting structures. Higher level of stress concentration was observed primarily in the denture base followed by the cortical bone.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Murata, H" uniqKey="Murata H">h murata</name></author><author><name sortKey="Taguchi1, N" uniqKey="Taguchi1 N">n taguchi1</name></author><author><name sortKey="Hamada, T" uniqKey="Hamada T">t hamada</name></author><author><name sortKey="Kawamura, M" uniqKey="Kawamura M">m kawamura</name></author><author><name sortKey="Mccabe, Jf" uniqKey="Mccabe J">jf mccabe</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Murata, H" uniqKey="Murata H">h murata</name></author><author><name sortKey="Hamada, T" uniqKey="Hamada T">t hamada</name></author><author><name sortKey="Shinsuke, S" uniqKey="Shinsuke S">s shinsuke</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Zarb, Ga" uniqKey="Zarb G">ga zarb</name></author><author><name sortKey="Bolender, Cl" uniqKey="Bolender C">cl bolender</name></author><author><name sortKey="Eckert, S" uniqKey="Eckert S">s eckert</name></author><author><name sortKey="Jacob, R" uniqKey="Jacob R">r jacob</name></author><author><name sortKey="Fenton, A" uniqKey="Fenton A">a fenton</name></author><author><name sortKey="Mericske Stern, R" uniqKey="Mericske Stern R">r mericske-stern</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kimoto, S" uniqKey="Kimoto S">s kimoto</name></author><author><name sortKey="So, K" uniqKey="So K">k so</name></author><author><name sortKey="Yamamoto, S" uniqKey="Yamamoto S">s yamamoto</name></author><author><name sortKey="Ohno, Y" uniqKey="Ohno Y">y ohno</name></author><author><name sortKey="Shinomiya, M" uniqKey="Shinomiya M">m shinomiya</name></author><author><name sortKey="Ogura, K" uniqKey="Ogura K">k ogura</name></author><author><name sortKey="Et, Al" uniqKey="Et A">al et</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kimoto, S" uniqKey="Kimoto S">s kimoto</name></author><author><name sortKey="Kimoto, K" uniqKey="Kimoto K">k kimoto</name></author><author><name sortKey="Gunji, A" uniqKey="Gunji A">a gunji</name></author><author><name sortKey="Kawai, Y" uniqKey="Kawai Y">y kawai</name></author><author><name sortKey="Murakami, H" uniqKey="Murakami H">h murakami</name></author><author><name sortKey="Tanaka, K" uniqKey="Tanaka K">k tanaka</name></author><author><name sortKey="Et, Al" uniqKey="Et A">al et</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kimoto, S" uniqKey="Kimoto S">s kimoto</name></author><author><name sortKey="Kimoto, K" uniqKey="Kimoto K">k kimoto</name></author><author><name sortKey="Gunji, A" uniqKey="Gunji A">a gunji</name></author><author><name sortKey="Et, Al" uniqKey="Et A">al et</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kasperski, J" uniqKey="Kasperski J">j kasperski</name></author><author><name sortKey=" Mudzki, J" uniqKey=" Mudzki J">j żmudzki</name></author><author><name sortKey="Chladek, G" uniqKey="Chladek G">g chladek</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kawano, F" uniqKey="Kawano F">f kawano</name></author><author><name sortKey="Koran, A" uniqKey="Koran A">a koran</name></author><author><name sortKey="Asaoka, K" uniqKey="Asaoka K">k asaoka</name></author><author><name sortKey="Matsumoto, N" uniqKey="Matsumoto N">n matsumoto</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Shim, Sj" uniqKey="Shim S">sj shim</name></author><author><name sortKey="Watts, Dc" uniqKey="Watts D">dc watts</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Sato, Y" uniqKey="Sato Y">y sato</name></author><author><name sortKey="Abe, Y" uniqKey="Abe Y">y abe</name></author><author><name sortKey="Okane, H" uniqKey="Okane H">h okane</name></author><author><name sortKey="Tsuga, K" uniqKey="Tsuga K">k tsuga</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Taguchi, N" uniqKey="Taguchi N">n taguchi</name></author><author><name sortKey="Murata, T" uniqKey="Murata T">t murata</name></author><author><name sortKey="Hamada, T" uniqKey="Hamada T">t hamada</name></author><author><name sortKey="Hong, G" uniqKey="Hong G">g hong</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Winkler, Sh" uniqKey="Winkler S">sh winkler</name></author></analytic></biblStruct></listBibl></div1></back></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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