Location of implants in the interforaminal region of the mandible and the consequences for the design of the superstructure.
Identifieur interne : 004510 ( PubMed/Corpus ); précédent : 004509; suivant : 004511Location of implants in the interforaminal region of the mandible and the consequences for the design of the superstructure.
Auteurs : H J Meijer ; F J Starmans ; W H Steen ; F. BosmanSource :
- Journal of oral rehabilitation [ 0305-182X ] ; 1994.
English descriptors
- KwdEn :
- MESH :
- chemical : Dental Implants.
- instrumentation : Denture Retention.
- physiopathology : Jaw, Edentulous, Mandible.
- Bite Force, Dental Prosthesis Design, Dental Stress Analysis, Denture, Overlay, Humans, Patient Care Planning.
Abstract
The location and the number of implants to support an overdenture is of major importance for the superstructure design. Sometimes, jaw bone anatomy or posteriorly placed implants enforce the use of an angular bar to achieve a position above the alveolar ridge. Loads on such a bar may introduce a moment on the implants which can result in high bone stresses and eventually the loss of the implants. This study on stress distribution in the bone around the implants in an edentulous mandible was performed using a three-dimensional finite element model. One model with two implants placed just anteriorly of the mental foramen and connected with an anteriorly placed bar, following the curvature of the alveolar ridge, was compared with two other designs. First with a similar model but now without a bar and secondly with a model with four implants connected with straight bars. It is concluded that loading a bar, which is placed anteriorly of the interconnecting line between two implants, causes extremely large compressive and tensile stress concentrations in the bone around the implants. Therefore, in those cases, it is advised not to connect the implants or, in case a bar-clip attachment is preferred, to place additional implants in the frontal region.
PubMed: 8133388
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pubmed:8133388Le document en format XML
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Bosman</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1994">1994</date><idno type="RBID">pubmed:8133388</idno><idno type="pmid">8133388</idno><idno type="wicri:Area/PubMed/Corpus">004510</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">004510</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Location of implants in the interforaminal region of the mandible and the consequences for the design of the superstructure.</title><author><name sortKey="Meijer, H J" sort="Meijer, H J" uniqKey="Meijer H" first="H J" last="Meijer">H J Meijer</name><affiliation><nlm:affiliation>Department of Oral-Maxillofacial Surgery, Prosthodontics and Special Dental Care, Faculty of Medicine, University of Utrecht, The Netherlands.</nlm:affiliation></affiliation></author><author><name sortKey="Starmans, F J" sort="Starmans, F J" uniqKey="Starmans F" first="F J" last="Starmans">F J Starmans</name></author><author><name sortKey="Steen, W H" sort="Steen, W H" uniqKey="Steen W" first="W H" last="Steen">W H Steen</name></author><author><name sortKey="Bosman, F" sort="Bosman, F" uniqKey="Bosman F" first="F" last="Bosman">F. Bosman</name></author></analytic><series><title level="j">Journal of oral rehabilitation</title><idno type="ISSN">0305-182X</idno><imprint><date when="1994" type="published">1994</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bite Force</term><term>Dental Implants</term><term>Dental Prosthesis Design</term><term>Dental Stress Analysis</term><term>Denture Retention (instrumentation)</term><term>Denture, Overlay</term><term>Humans</term><term>Jaw, Edentulous (physiopathology)</term><term>Mandible (physiopathology)</term><term>Patient Care Planning</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Dental Implants</term></keywords><keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Denture Retention</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Jaw, Edentulous</term><term>Mandible</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Bite Force</term><term>Dental Prosthesis Design</term><term>Dental Stress Analysis</term><term>Denture, Overlay</term><term>Humans</term><term>Patient Care Planning</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The location and the number of implants to support an overdenture is of major importance for the superstructure design. Sometimes, jaw bone anatomy or posteriorly placed implants enforce the use of an angular bar to achieve a position above the alveolar ridge. Loads on such a bar may introduce a moment on the implants which can result in high bone stresses and eventually the loss of the implants. This study on stress distribution in the bone around the implants in an edentulous mandible was performed using a three-dimensional finite element model. One model with two implants placed just anteriorly of the mental foramen and connected with an anteriorly placed bar, following the curvature of the alveolar ridge, was compared with two other designs. First with a similar model but now without a bar and secondly with a model with four implants connected with straight bars. It is concluded that loading a bar, which is placed anteriorly of the interconnecting line between two implants, causes extremely large compressive and tensile stress concentrations in the bone around the implants. Therefore, in those cases, it is advised not to connect the implants or, in case a bar-clip attachment is preferred, to place additional implants in the frontal region.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">8133388</PMID><DateCompleted><Year>1994</Year><Month>04</Month><Day>21</Day></DateCompleted><DateRevised><Year>2004</Year><Month>11</Month><Day>17</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0305-182X</ISSN><JournalIssue CitedMedium="Print"><Volume>21</Volume><Issue>1</Issue><PubDate><Year>1994</Year><Month>Jan</Month></PubDate></JournalIssue><Title>Journal of oral rehabilitation</Title><ISOAbbreviation>J Oral Rehabil</ISOAbbreviation></Journal><ArticleTitle>Location of implants in the interforaminal region of the mandible and the consequences for the design of the superstructure.</ArticleTitle><Pagination><MedlinePgn>47-56</MedlinePgn></Pagination><Abstract><AbstractText>The location and the number of implants to support an overdenture is of major importance for the superstructure design. Sometimes, jaw bone anatomy or posteriorly placed implants enforce the use of an angular bar to achieve a position above the alveolar ridge. Loads on such a bar may introduce a moment on the implants which can result in high bone stresses and eventually the loss of the implants. This study on stress distribution in the bone around the implants in an edentulous mandible was performed using a three-dimensional finite element model. One model with two implants placed just anteriorly of the mental foramen and connected with an anteriorly placed bar, following the curvature of the alveolar ridge, was compared with two other designs. First with a similar model but now without a bar and secondly with a model with four implants connected with straight bars. It is concluded that loading a bar, which is placed anteriorly of the interconnecting line between two implants, causes extremely large compressive and tensile stress concentrations in the bone around the implants. Therefore, in those cases, it is advised not to connect the implants or, in case a bar-clip attachment is preferred, to place additional implants in the frontal region.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Meijer</LastName><ForeName>H J</ForeName><Initials>HJ</Initials><AffiliationInfo><Affiliation>Department of Oral-Maxillofacial Surgery, Prosthodontics and Special Dental Care, Faculty of Medicine, University of Utrecht, The Netherlands.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Starmans</LastName><ForeName>F J</ForeName><Initials>FJ</Initials></Author><Author ValidYN="Y"><LastName>Steen</LastName><ForeName>W H</ForeName><Initials>WH</Initials></Author><Author ValidYN="Y"><LastName>Bosman</LastName><ForeName>F</ForeName><Initials>F</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Oral Rehabil</MedlineTA><NlmUniqueID>0433604</NlmUniqueID><ISSNLinking>0305-182X</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D015921">Dental Implants</NameOfSubstance></Chemical></ChemicalList><CitationSubset>D</CitationSubset><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D001732" MajorTopicYN="N">Bite Force</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D015921" MajorTopicYN="Y">Dental Implants</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D017267" MajorTopicYN="Y">Dental Prosthesis Design</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003799" MajorTopicYN="Y">Dental Stress Analysis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003781" MajorTopicYN="N">Denture Retention</DescriptorName><QualifierName UI="Q000295" MajorTopicYN="N">instrumentation</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D003828" MajorTopicYN="N">Denture, Overlay</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006801" MajorTopicYN="N">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D007575" MajorTopicYN="N">Jaw, Edentulous</DescriptorName><QualifierName UI="Q000503" MajorTopicYN="Y">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008334" MajorTopicYN="N">Mandible</DescriptorName><QualifierName UI="Q000503" MajorTopicYN="Y">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010347" MajorTopicYN="N">Patient Care Planning</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1994</Year><Month>1</Month><Day>1</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1994</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1994</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">8133388</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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