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Article: Strain analysis of maxillary complete denture with three-dimensional finite element method

TitleStrain analysis of maxillary complete denture with three-dimensional finite element method
Authors
Issue Date2010
PublisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/prosdent
Citation
Journal Of Prosthetic Dentistry, 2010, v. 103 n. 5, p. 309-318 How to Cite?
Abstract
Statement 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.
Persistent Identifierhttp://hdl.handle.net/10722/134408
ISSN
2013 Impact Factor: 1.419
ISI Accession Number ID
References

 

Author Affiliations
  1. The University of Hong Kong
DC FieldValueLanguage
dc.contributor.authorCheng, YYen_HK
dc.contributor.authorCheung, WLen_HK
dc.contributor.authorChow, TWen_HK
dc.date.accessioned2011-06-17T09:20:06Z-
dc.date.available2011-06-17T09:20:06Z-
dc.date.issued2010en_HK
dc.identifier.citationJournal Of Prosthetic Dentistry, 2010, v. 103 n. 5, p. 309-318en_HK
dc.identifier.issn0022-3913en_HK
dc.identifier.urihttp://hdl.handle.net/10722/134408-
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.en_HK
dc.languageengen_US
dc.publisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/prosdenten_HK
dc.relation.ispartofJournal of Prosthetic Dentistryen_HK
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 methoden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-3913&volume=103&issue=5&spage=309&epage=318&date=2010&atitle=Strain+analysis+of+maxillary+complete+denture+with+three-dimensional+finite+element+method-
dc.identifier.emailCheung, WL:wlcheung@hkucc.hku.hken_HK
dc.identifier.emailChow, TW:twchow@hku.hken_HK
dc.identifier.authorityCheung, WL=rp00103en_HK
dc.identifier.authorityChow, TW=rp00009en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0022-3913(10)60064-9en_HK
dc.identifier.pmid20416415en_HK
dc.identifier.scopuseid_2-s2.0-77950951330en_HK
dc.identifier.hkuros195957en_US
dc.identifier.hkuros185450-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77950951330&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume103en_HK
dc.identifier.issue5en_HK
dc.identifier.spage309en_HK
dc.identifier.epage318en_HK
dc.identifier.eissn1097-6841-
dc.identifier.isiWOS:000278528700009-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridCheng, YY=7404915200en_HK
dc.identifier.scopusauthoridCheung, WL=7202743084en_HK
dc.identifier.scopusauthoridChow, TW=7203012369en_HK

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