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Article: Strain analysis of maxillary complete denture with three-dimensional finite element method
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TitleStrain analysis of maxillary complete denture with three-dimensional finite element method
 
AuthorsCheng, YY
Cheung, WL1
Chow, TW1
 
Issue Date2010
 
PublisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/prosdent
 
CitationJournal Of Prosthetic Dentistry, 2010, v. 103 n. 5, p. 309-318 [How to Cite?]
DOI: http://dx.doi.org/10.1016/S0022-3913(10)60064-9
 
AbstractStatement of problem: The fracture of maxillary complete dentures has been reported as the most common prosthesis failure. Purpose: The purpose of this study was to evaluate strain distribution in dentures during application of occlusal load with 3-dimensional (3-D) finite element analysis (FEA). Material and methods: A maxillary complete denture was converted into a 3-D numerical model by an advanced topometric sensor digitizer (ATOS). The denture surfaces were scanned with fringes. Ten measurements were made for each scan of the denture in top, left, right, back, and front orientations by tilting the scanning table. The individual scans were merged by the digitizing software into a single image. A haptic device with a freeform system (PHANTOM) was used to create the mucosa in contact with the intaglio surface of the denture model. Supporting bone was then constructed from the mucosa model. The posterior teeth were loaded with an occlusal force of 230 N, and the basal bone was constrained for performing FEA. Results: The highest tensile and compressive strains were found at the incisal and labial frenal notches, respectively. Strains on the intaglio surface of the denture were primarily compressive. The buccal flange exhibited tensile strains in the horizontal direction but compressive strains in the vertical direction. The labial flange showed compressive strains in both directions. The posterior border of the denture flexed away from the mucosa during occlusal loading. Conclusions: Three-dimensional FEA provided different views of strain distribution in the denture and indicated that denture failure was unlikely to occur at the shallow labial frenal notch because the strain is compressive. The high tensile strain concentration at the incisal notch is likely to be the cause of denture fracture during clinical service. © 2010 The Editorial Council of the Journal of Prosthetic Dentistry.
 
ISSN0022-3913
2013 Impact Factor: 1.419
 
DOIhttp://dx.doi.org/10.1016/S0022-3913(10)60064-9
 
ISI Accession Number IDWOS:000278528700009
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorCheng, YY
 
dc.contributor.authorCheung, WL
 
dc.contributor.authorChow, TW
 
dc.date.accessioned2011-06-17T09:20:06Z
 
dc.date.available2011-06-17T09:20:06Z
 
dc.date.issued2010
 
dc.description.abstractStatement of problem: The fracture of maxillary complete dentures has been reported as the most common prosthesis failure. Purpose: The purpose of this study was to evaluate strain distribution in dentures during application of occlusal load with 3-dimensional (3-D) finite element analysis (FEA). Material and methods: A maxillary complete denture was converted into a 3-D numerical model by an advanced topometric sensor digitizer (ATOS). The denture surfaces were scanned with fringes. Ten measurements were made for each scan of the denture in top, left, right, back, and front orientations by tilting the scanning table. The individual scans were merged by the digitizing software into a single image. A haptic device with a freeform system (PHANTOM) was used to create the mucosa in contact with the intaglio surface of the denture model. Supporting bone was then constructed from the mucosa model. The posterior teeth were loaded with an occlusal force of 230 N, and the basal bone was constrained for performing FEA. Results: The highest tensile and compressive strains were found at the incisal and labial frenal notches, respectively. Strains on the intaglio surface of the denture were primarily compressive. The buccal flange exhibited tensile strains in the horizontal direction but compressive strains in the vertical direction. The labial flange showed compressive strains in both directions. The posterior border of the denture flexed away from the mucosa during occlusal loading. Conclusions: Three-dimensional FEA provided different views of strain distribution in the denture and indicated that denture failure was unlikely to occur at the shallow labial frenal notch because the strain is compressive. The high tensile strain concentration at the incisal notch is likely to be the cause of denture fracture during clinical service. © 2010 The Editorial Council of the Journal of Prosthetic Dentistry.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationJournal Of Prosthetic Dentistry, 2010, v. 103 n. 5, p. 309-318 [How to Cite?]
DOI: http://dx.doi.org/10.1016/S0022-3913(10)60064-9
 
dc.identifier.doihttp://dx.doi.org/10.1016/S0022-3913(10)60064-9
 
dc.identifier.eissn1097-6841
 
dc.identifier.epage318
 
dc.identifier.hkuros195957
 
dc.identifier.hkuros185450
 
dc.identifier.isiWOS:000278528700009
 
dc.identifier.issn0022-3913
2013 Impact Factor: 1.419
 
dc.identifier.issue5
 
dc.identifier.openurl
 
dc.identifier.pmid20416415
 
dc.identifier.scopuseid_2-s2.0-77950951330
 
dc.identifier.spage309
 
dc.identifier.urihttp://hdl.handle.net/10722/134408
 
dc.identifier.volume103
 
dc.languageeng
 
dc.publisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/prosdent
 
dc.publisher.placeUnited States
 
dc.relation.ispartofJournal of Prosthetic Dentistry
 
dc.relation.referencesReferences in Scopus
 
dc.subject.meshAlveolar Process - anatomy and histology
 
dc.subject.meshBite Force
 
dc.subject.meshDenture, Complete, Upper
 
dc.subject.meshFinite Element Analysis
 
dc.subject.meshImaging, Three-Dimensional - methods
 
dc.titleStrain analysis of maxillary complete denture with three-dimensional finite element method
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong