Implant biomechanics in grafted sinus: a finite element analysis.
Identifieur interne : 002427 ( PubMed/Checkpoint ); précédent : 002426; suivant : 002428Implant biomechanics in grafted sinus: a finite element analysis.
Auteurs : Mete I. Fanuscu [États-Unis] ; Hung V. Vu ; Bernard PonceletSource :
- The Journal of oral implantology [ 0160-6972 ] ; 2004.
Descripteurs français
- KwdFr :
- Analyse des éléments finis, Conception de prothèse dentaire, Contrainte mécanique, Humains, Imagerie tridimensionnelle, Implants dentaires, Maxillaire (anatomie et histologie), Maxillaire (physiologie), Modèles biologiques, Mâchoire édentée (anatomopathologie), Mâchoire édentée (physiopathologie), Phénomènes biomécaniques, Propriétés de surface, Simulation numérique, Sinus maxillaire (anatomie et histologie), Sinus maxillaire (physiologie), Transplantation osseuse (anatomopathologie), Transplantation osseuse (physiologie), Élasticité.
- MESH :
- anatomie et histologie : Maxillaire, Sinus maxillaire.
- anatomopathologie : Mâchoire édentée, Transplantation osseuse.
- physiologie : Maxillaire, Sinus maxillaire, Transplantation osseuse.
- physiopathologie : Mâchoire édentée.
- Analyse des éléments finis, Conception de prothèse dentaire, Contrainte mécanique, Humains, Imagerie tridimensionnelle, Implants dentaires, Modèles biologiques, Phénomènes biomécaniques, Propriétés de surface, Simulation numérique, Élasticité.
English descriptors
- KwdEn :
- Biomechanical Phenomena, Bone Transplantation (pathology), Bone Transplantation (physiology), Computer Simulation, Dental Implants, Dental Prosthesis Design, Elasticity, Finite Element Analysis, Humans, Imaging, Three-Dimensional, Jaw, Edentulous (pathology), Jaw, Edentulous (physiopathology), Maxilla (anatomy & histology), Maxilla (physiology), Maxillary Sinus (anatomy & histology), Maxillary Sinus (physiology), Models, Biological, Stress, Mechanical, Surface Properties.
- MESH :
- chemical : Dental Implants.
- anatomy & histology : Maxilla, Maxillary Sinus.
- pathology : Bone Transplantation, Jaw, Edentulous.
- physiology : Bone Transplantation, Maxilla, Maxillary Sinus.
- physiopathology : Jaw, Edentulous.
- Biomechanical Phenomena, Computer Simulation, Dental Prosthesis Design, Elasticity, Finite Element Analysis, Humans, Imaging, Three-Dimensional, Models, Biological, Stress, Mechanical, Surface Properties.
Abstract
This in vitro study investigated the stress distribution in the bone surrounding an implant that is placed in a posterior edentulous maxilla with a sinus graft. The standard threaded implant and anatomy of the crestal cortical bone, cancellous bone, sinus floor cortical bone, and grafted bone were represented in the 3-dimensional finite element models. The thickness of the crestal cortical bone and stiffness of the graft were varied in the models to simulate different clinical scenarios, representing variation in the anatomy and graft quality. Axial and lateral loads were considered and the stresses developed in the supporting structures were analyzed. The finite element models showed different stress patterns associated with helical threads. The von Mises stress distribution indicated that stress was maximal around the top of the implant with varying intensities in both loading cases. The stress was highest in the cortical bone, lower in the grafted bone, and lowest in the cancellous bone. When the stiffness of the grafted bone approximated the cortical bone, axial loading resulted in stress reduction in all the native bone layers; however, lateral loading produced stress reduction in only the cancellous bone. When the stiffness of the graft was less than that of the cancellous bone, the graft assumed a lesser proportion of axial loads. Thus, it caused a concomitant stress increase in all the native bones, whereas this phenomenon was observed in only the cancellous bone with lateral loading. The crestal cortical bone, though receiving the highest intensity stresses, affected the overall stress distribution less than the grafted bone. The stress from the lateral load was up to 11 times higher than that of the axial load around the implant. These findings suggest that the type of loading affects the load distribution more than the variations in bone, and native bone is the primary supporting structure.
DOI: 10.1563/0.674.1
PubMed: 15119454
Affiliations:
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The standard threaded implant and anatomy of the crestal cortical bone, cancellous bone, sinus floor cortical bone, and grafted bone were represented in the 3-dimensional finite element models. The thickness of the crestal cortical bone and stiffness of the graft were varied in the models to simulate different clinical scenarios, representing variation in the anatomy and graft quality. Axial and lateral loads were considered and the stresses developed in the supporting structures were analyzed. The finite element models showed different stress patterns associated with helical threads. The von Mises stress distribution indicated that stress was maximal around the top of the implant with varying intensities in both loading cases. The stress was highest in the cortical bone, lower in the grafted bone, and lowest in the cancellous bone. When the stiffness of the grafted bone approximated the cortical bone, axial loading resulted in stress reduction in all the native bone layers; however, lateral loading produced stress reduction in only the cancellous bone. When the stiffness of the graft was less than that of the cancellous bone, the graft assumed a lesser proportion of axial loads. Thus, it caused a concomitant stress increase in all the native bones, whereas this phenomenon was observed in only the cancellous bone with lateral loading. The crestal cortical bone, though receiving the highest intensity stresses, affected the overall stress distribution less than the grafted bone. The stress from the lateral load was up to 11 times higher than that of the axial load around the implant. These findings suggest that the type of loading affects the load distribution more than the variations in bone, and native bone is the primary supporting structure.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">15119454</PMID><DateCompleted><Year>2004</Year><Month>05</Month><Day>19</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0160-6972</ISSN><JournalIssue CitedMedium="Print"><Volume>30</Volume><Issue>2</Issue><PubDate><Year>2004</Year></PubDate></JournalIssue><Title>The Journal of oral implantology</Title><ISOAbbreviation>J Oral Implantol</ISOAbbreviation></Journal><ArticleTitle>Implant biomechanics in grafted sinus: a finite element analysis.</ArticleTitle><Pagination><MedlinePgn>59-68</MedlinePgn></Pagination><Abstract><AbstractText>This in vitro study investigated the stress distribution in the bone surrounding an implant that is placed in a posterior edentulous maxilla with a sinus graft. The standard threaded implant and anatomy of the crestal cortical bone, cancellous bone, sinus floor cortical bone, and grafted bone were represented in the 3-dimensional finite element models. The thickness of the crestal cortical bone and stiffness of the graft were varied in the models to simulate different clinical scenarios, representing variation in the anatomy and graft quality. Axial and lateral loads were considered and the stresses developed in the supporting structures were analyzed. The finite element models showed different stress patterns associated with helical threads. The von Mises stress distribution indicated that stress was maximal around the top of the implant with varying intensities in both loading cases. The stress was highest in the cortical bone, lower in the grafted bone, and lowest in the cancellous bone. When the stiffness of the grafted bone approximated the cortical bone, axial loading resulted in stress reduction in all the native bone layers; however, lateral loading produced stress reduction in only the cancellous bone. When the stiffness of the graft was less than that of the cancellous bone, the graft assumed a lesser proportion of axial loads. Thus, it caused a concomitant stress increase in all the native bones, whereas this phenomenon was observed in only the cancellous bone with lateral loading. The crestal cortical bone, though receiving the highest intensity stresses, affected the overall stress distribution less than the grafted bone. The stress from the lateral load was up to 11 times higher than that of the axial load around the implant. These findings suggest that the type of loading affects the load distribution more than the variations in bone, and native bone is the primary supporting structure.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Fanuscu</LastName><ForeName>Mete I</ForeName><Initials>MI</Initials><AffiliationInfo><Affiliation>Division of Restorative Dentistry, School of Dentistry, University of California, Los Angeles, CHS, 20-114, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA. mfanuscu@ucla.edu</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Vu</LastName><ForeName>Hung V</ForeName><Initials>HV</Initials></Author><Author ValidYN="Y"><LastName>Poncelet</LastName><ForeName>Bernard</ForeName><Initials>B</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Oral Implantol</MedlineTA><NlmUniqueID>7801086</NlmUniqueID><ISSNLinking>0160-6972</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D015921">Dental Implants</NameOfSubstance></Chemical></ChemicalList><CitationSubset>D</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D001696" MajorTopicYN="N">Biomechanical Phenomena</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D016025" MajorTopicYN="N">Bone Transplantation</DescriptorName><QualifierName UI="Q000473" MajorTopicYN="N">pathology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D003198" MajorTopicYN="N">Computer Simulation</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D015921" MajorTopicYN="Y">Dental Implants</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D017267" MajorTopicYN="N">Dental Prosthesis Design</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D004548" MajorTopicYN="N">Elasticity</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D020342" MajorTopicYN="Y">Finite Element Analysis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006801" MajorTopicYN="N">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D021621" MajorTopicYN="N">Imaging, Three-Dimensional</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D007575" MajorTopicYN="N">Jaw, Edentulous</DescriptorName><QualifierName UI="Q000473" MajorTopicYN="N">pathology</QualifierName><QualifierName UI="Q000503" MajorTopicYN="N">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008437" MajorTopicYN="N">Maxilla</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008443" MajorTopicYN="N">Maxillary Sinus</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008954" MajorTopicYN="N">Models, Biological</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013314" MajorTopicYN="N">Stress, Mechanical</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013499" MajorTopicYN="N">Surface Properties</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2004</Year><Month>5</Month><Day>4</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2004</Year><Month>5</Month><Day>20</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2004</Year><Month>5</Month><Day>4</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">15119454</ArticleId><ArticleId IdType="doi">10.1563/0.674.1</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country></list><tree><noCountry><name sortKey="Poncelet, Bernard" sort="Poncelet, Bernard" uniqKey="Poncelet B" first="Bernard" last="Poncelet">Bernard Poncelet</name><name sortKey="Vu, Hung V" sort="Vu, Hung V" uniqKey="Vu H" first="Hung V" last="Vu">Hung V. Vu</name></noCountry><country name="États-Unis"><noRegion><name sortKey="Fanuscu, Mete I" sort="Fanuscu, Mete I" uniqKey="Fanuscu M" first="Mete I" last="Fanuscu">Mete I. Fanuscu</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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