Three Dimensional Finite Element Analysis of Distal Abutment Stresses of Removable Partial Dentures with Different Retainer Designs
Identifieur interne : 000A05 ( Pmc/Checkpoint ); précédent : 000A04; suivant : 000A06Three Dimensional Finite Element Analysis of Distal Abutment Stresses of Removable Partial Dentures with Different Retainer Designs
Auteurs : Simindokht Zarrati [Iran] ; Mehran Bahrami [Iran] ; Fatemeh Heidari [Iran] ; Jamal Kashani [Iran]Source :
- Journal of Dentistry (Tehran, Iran) [ 1735-2150 ] ; 2015.
Abstract
This finite element method study aimed to compare the amount of stress on an isolated mandibular second premolar in two conventional reciprocal parallel interface designs of removable partial dentures (RPDs) and the same RPD abutment tooth (not isolated).
A Kennedy Class 1, modification 1 RPD framework was simulated on a 3D model of mandible with three different designs: an isolated tooth with a mesial rest, an isolated tooth with mesial and distal rests and an abutment with a mesial rest (which was not isolated); 26 N occlusal forces were exerted bilaterally on the first molar sites. Stress on the abutment teeth was analyzed using Cosmos Works 2009 Software.
In all designs, the abutment tooth stress concentration was located in the buccal alveolar crest. In the first model, the von Mises stress distribution in the contact area of I-bar clasp and cervical portion of the tooth was 19 MPa and the maximum stress was 30 MPa. In the second model, the maximum von Mises stress distribution was 15 MPa in the cervical of the tooth. In the third model, the maximum von Mises stress was located in the cervical of the tooth and the distal proximal plate.
We recommend using both mesial and distal rests on the distal abutment teeth of distal extension RPDs. The abutment of an extension base RPD, which is not isolated in presence of its neighboring more anterior tooth, may have a better biomechanical prognosis.
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PubMed: 26884772
PubMed Central: 4754564
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Three Dimensional Finite Element Analysis of Distal Abutment Stresses of Removable Partial Dentures with Different Retainer Designs</title><author><name sortKey="Zarrati, Simindokht" sort="Zarrati, Simindokht" uniqKey="Zarrati S" first="Simindokht" last="Zarrati">Simindokht Zarrati</name><affiliation wicri:level="1"><nlm:aff id="AFF1">Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran Iran; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran Iran; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Bahrami, Mehran" sort="Bahrami, Mehran" uniqKey="Bahrami M" first="Mehran" last="Bahrami">Mehran Bahrami</name><affiliation wicri:level="1"><nlm:aff id="AFF1">Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran Iran; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran Iran; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Heidari, Fatemeh" sort="Heidari, Fatemeh" uniqKey="Heidari F" first="Fatemeh" last="Heidari">Fatemeh Heidari</name><affiliation wicri:level="1"><nlm:aff id="AFF2">Dentist, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Dentist, School of Dentistry, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Kashani, Jamal" sort="Kashani, Jamal" uniqKey="Kashani J" first="Jamal" last="Kashani">Jamal Kashani</name><affiliation wicri:level="1"><nlm:aff id="AFF3">Mechanical Engineer, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Mechanical Engineer, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">26884772</idno><idno type="pmc">4754564</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4754564</idno><idno type="RBID">PMC:4754564</idno><date when="2015">2015</date><idno type="wicri:Area/Pmc/Corpus">000674</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000674</idno><idno type="wicri:Area/Pmc/Curation">000674</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">000674</idno><idno type="wicri:Area/Pmc/Checkpoint">000A05</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Checkpoint">000A05</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Three Dimensional Finite Element Analysis of Distal Abutment Stresses of Removable Partial Dentures with Different Retainer Designs</title><author><name sortKey="Zarrati, Simindokht" sort="Zarrati, Simindokht" uniqKey="Zarrati S" first="Simindokht" last="Zarrati">Simindokht Zarrati</name><affiliation wicri:level="1"><nlm:aff id="AFF1">Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran Iran; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran Iran; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Bahrami, Mehran" sort="Bahrami, Mehran" uniqKey="Bahrami M" first="Mehran" last="Bahrami">Mehran Bahrami</name><affiliation wicri:level="1"><nlm:aff id="AFF1">Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran Iran; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran Iran; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Heidari, Fatemeh" sort="Heidari, Fatemeh" uniqKey="Heidari F" first="Fatemeh" last="Heidari">Fatemeh Heidari</name><affiliation wicri:level="1"><nlm:aff id="AFF2">Dentist, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Dentist, School of Dentistry, Tehran University of Medical Sciences, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></affiliation></author><author><name sortKey="Kashani, Jamal" sort="Kashani, Jamal" uniqKey="Kashani J" first="Jamal" last="Kashani">Jamal Kashani</name><affiliation wicri:level="1"><nlm:aff id="AFF3">Mechanical Engineer, Tehran, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Mechanical Engineer, Tehran</wicri:regionArea><wicri:noRegion>Tehran</wicri:noRegion></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="2015">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Objectives:</title><p>This finite element method study aimed to compare the amount of stress on an isolated mandibular second premolar in two conventional reciprocal parallel interface designs of removable partial dentures (RPDs) and the same RPD abutment tooth (not isolated).</p></sec><sec><title>Materials and Methods:</title><p>A Kennedy Class 1, modification 1 RPD framework was simulated on a 3D model of mandible with three different designs: an isolated tooth with a mesial rest, an isolated tooth with mesial and distal rests and an abutment with a mesial rest (which was not isolated); 26 N occlusal forces were exerted bilaterally on the first molar sites. Stress on the abutment teeth was analyzed using Cosmos Works 2009 Software.</p></sec><sec><title>Results:</title><p>In all designs, the abutment tooth stress concentration was located in the buccal alveolar crest. In the first model, the von Mises stress distribution in the contact area of I-bar clasp and cervical portion of the tooth was 19 MPa and the maximum stress was 30 MPa. In the second model, the maximum von Mises stress distribution was 15 MPa in the cervical of the tooth. In the third model, the maximum von Mises stress was located in the cervical of the tooth and the distal proximal plate.</p></sec><sec><title>Conclusion:</title><p>We recommend using both mesial and distal rests on the distal abutment teeth of distal extension RPDs. The abutment of an extension base RPD, which is not isolated in presence of its neighboring more anterior tooth, may have a better biomechanical prognosis.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Frechette, Ar" uniqKey="Frechette A">AR. Frechette</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Carr, Ab" uniqKey="Carr A">AB. Carr</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Phonenix, Rd" uniqKey="Phonenix R">RD. Phonenix</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Itoh, H" uniqKey="Itoh H">H Itoh</name></author><author><name sortKey="Caputo, Aa" uniqKey="Caputo A">AA Caputo</name></author><author><name sortKey="Wylie, R" uniqKey="Wylie R">R Wylie</name></author><author><name sortKey="Berg, T" uniqKey="Berg T">T. 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<front><journal-meta><journal-id journal-id-type="nlm-ta">J Dent (Tehran)</journal-id><journal-id journal-id-type="iso-abbrev">J Dent (Tehran)</journal-id><journal-id journal-id-type="publisher-id">JOD</journal-id><journal-id journal-id-type="pmc">JOD</journal-id><journal-title-group><journal-title>Journal of Dentistry (Tehran, Iran)</journal-title></journal-title-group><issn pub-type="ppub">1735-2150</issn><issn pub-type="epub">2008-2185</issn><publisher><publisher-name>Tehran University of Medical Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">26884772</article-id><article-id pub-id-type="pmc">4754564</article-id><article-id pub-id-type="publisher-id">jod-12-389</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>Three Dimensional Finite Element Analysis of Distal Abutment Stresses of Removable Partial Dentures with Different Retainer Designs</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Zarrati</surname><given-names>Simindokht</given-names></name><xref ref-type="aff" rid="AFF1"><sup>1</sup></xref></contrib><contrib contrib-type="author" corresp="yes"><name><surname>Bahrami</surname><given-names>Mehran</given-names></name><xref ref-type="aff" rid="AFF1"><sup>1</sup></xref><xref ref-type="corresp" rid="C1"></xref></contrib><contrib contrib-type="author"><name><surname>Heidari</surname><given-names>Fatemeh</given-names></name><xref ref-type="aff" rid="AFF2"><sup>2</sup></xref></contrib><contrib contrib-type="author"><name><surname>Kashani</surname><given-names>Jamal</given-names></name><xref ref-type="aff" rid="AFF3"><sup>3</sup></xref></contrib><aff id="AFF1"><label>1</label>Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran Iran; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran</aff><aff id="AFF2"><label>2</label>Dentist, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran</aff><aff id="AFF3"><label>3</label>Mechanical Engineer, Tehran, Iran</aff></contrib-group><author-notes><corresp id="C1">Corresponding author: M. Bahrami, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences; Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran, <email>m-bahrami@sina.tums.ac.ir</email></corresp></author-notes><pub-date pub-type="ppub"><month>6</month><year>2015</year></pub-date><volume>12</volume><issue>6</issue><fpage>389</fpage><lpage>397</lpage><history><date date-type="received"><day>16</day><month>1</month><year>2015</year></date><date date-type="accepted"><day>27</day><month>3</month><year>2015</year></date></history><permissions><copyright-statement>Copyright© Dental Research Center, Tehran University of Medical Sciences</copyright-statement><copyright-year>2015</copyright-year><license><license-p>This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.</license-p></license></permissions><abstract><sec><title>Objectives:</title><p>This finite element method study aimed to compare the amount of stress on an isolated mandibular second premolar in two conventional reciprocal parallel interface designs of removable partial dentures (RPDs) and the same RPD abutment tooth (not isolated).</p></sec><sec><title>Materials and Methods:</title><p>A Kennedy Class 1, modification 1 RPD framework was simulated on a 3D model of mandible with three different designs: an isolated tooth with a mesial rest, an isolated tooth with mesial and distal rests and an abutment with a mesial rest (which was not isolated); 26 N occlusal forces were exerted bilaterally on the first molar sites. Stress on the abutment teeth was analyzed using Cosmos Works 2009 Software.</p></sec><sec><title>Results:</title><p>In all designs, the abutment tooth stress concentration was located in the buccal alveolar crest. In the first model, the von Mises stress distribution in the contact area of I-bar clasp and cervical portion of the tooth was 19 MPa and the maximum stress was 30 MPa. In the second model, the maximum von Mises stress distribution was 15 MPa in the cervical of the tooth. In the third model, the maximum von Mises stress was located in the cervical of the tooth and the distal proximal plate.</p></sec><sec><title>Conclusion:</title><p>We recommend using both mesial and distal rests on the distal abutment teeth of distal extension RPDs. The abutment of an extension base RPD, which is not isolated in presence of its neighboring more anterior tooth, may have a better biomechanical prognosis.</p></sec></abstract><kwd-group><kwd>Finite Element Analysis</kwd><kwd>Abutment</kwd><kwd>Retainer</kwd></kwd-group></article-meta></front></pmc><affiliations><list><country><li>Iran</li></country></list><tree><country name="Iran"><noRegion><name sortKey="Zarrati, Simindokht" sort="Zarrati, Simindokht" uniqKey="Zarrati S" first="Simindokht" last="Zarrati">Simindokht Zarrati</name></noRegion><name sortKey="Bahrami, Mehran" sort="Bahrami, Mehran" uniqKey="Bahrami M" first="Mehran" last="Bahrami">Mehran Bahrami</name><name sortKey="Heidari, Fatemeh" sort="Heidari, Fatemeh" uniqKey="Heidari F" first="Fatemeh" last="Heidari">Fatemeh Heidari</name><name sortKey="Kashani, Jamal" sort="Kashani, Jamal" uniqKey="Kashani J" first="Jamal" last="Kashani">Jamal Kashani</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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