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Article: Influence of the indirect restoration design on the fracture resistance: a finite element study

TitleInfluence of the indirect restoration design on the fracture resistance: a finite element study
Authors
Issue Date2016
PublisherBioMed Central Ltd. The Journal's web site is located at http://www.biomedical-engineering-online.com
Citation
BioMedical Engineering OnLine, 2016, v. 15 n. 1, article no. 3 How to Cite?
AbstractObjectives: To establish a three-dimensional (3D) finite element (FE) model of a maxillary first premolar and to evaluate the stress generated on the tooth (dentine) and on the indirect composite resin restorations by occlusal forces. Methods: An embedded intact maxillary first premolar tooth was sliced serially and scanned digitally parallel to the occlusal surface. The 64 images were assembled in a 3D FE mesh and exported to generate a 3D solid tooth model. Simulated, adhesively cemented indirect mesial-occlusal-distal (MOD) inlays of 2 mm (I1), 3 mm (I2) and 4 mm (I3) in width, and MOD onlays with occlusal cusp coverage of 2 mm (O1) and 3 mm (O2) in depth were created. The peak von Mises stress values in the five tooth models resulting from static vertical and oblique occlusal forces (300 N) were evaluated using Patran FE software. Results: The peak stress values generated by vertical occlusal force generated in dentine of I1, I2, I3, O1 and O2 restoration were 67, 32, 29, 38 and 27 MPa, respectively, and those generated by oblique occlusal force were 52, 114, 168, 54 and 55 MPa, respectively. The peak von Mises stress values in I1, I2, I3, O1 and O2 restoration subjected to oblique occlusal loading were 79, 120, 1740, 1400 and 1170 MPa, respectively. Conclusion: A 3D FE model of a maxillary first premolar was established. Simulated cemented composite resin onlay markedly reduces occlusal stress in the underlying dentine of large MOD preparation. Oblique occlusal force imparts substantially higher stress to large composite resin inlay than to the adjacent dentine.
Persistent Identifierhttp://hdl.handle.net/10722/226302
ISSN
2023 Impact Factor: 2.9
2023 SCImago Journal Rankings: 0.692
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorMei, L-
dc.contributor.authorChen, YM-
dc.contributor.authorLi, H-
dc.contributor.authorChu, CH-
dc.date.accessioned2016-06-17T07:43:10Z-
dc.date.available2016-06-17T07:43:10Z-
dc.date.issued2016-
dc.identifier.citationBioMedical Engineering OnLine, 2016, v. 15 n. 1, article no. 3-
dc.identifier.issn1475-925X-
dc.identifier.urihttp://hdl.handle.net/10722/226302-
dc.description.abstractObjectives: To establish a three-dimensional (3D) finite element (FE) model of a maxillary first premolar and to evaluate the stress generated on the tooth (dentine) and on the indirect composite resin restorations by occlusal forces. Methods: An embedded intact maxillary first premolar tooth was sliced serially and scanned digitally parallel to the occlusal surface. The 64 images were assembled in a 3D FE mesh and exported to generate a 3D solid tooth model. Simulated, adhesively cemented indirect mesial-occlusal-distal (MOD) inlays of 2 mm (I1), 3 mm (I2) and 4 mm (I3) in width, and MOD onlays with occlusal cusp coverage of 2 mm (O1) and 3 mm (O2) in depth were created. The peak von Mises stress values in the five tooth models resulting from static vertical and oblique occlusal forces (300 N) were evaluated using Patran FE software. Results: The peak stress values generated by vertical occlusal force generated in dentine of I1, I2, I3, O1 and O2 restoration were 67, 32, 29, 38 and 27 MPa, respectively, and those generated by oblique occlusal force were 52, 114, 168, 54 and 55 MPa, respectively. The peak von Mises stress values in I1, I2, I3, O1 and O2 restoration subjected to oblique occlusal loading were 79, 120, 1740, 1400 and 1170 MPa, respectively. Conclusion: A 3D FE model of a maxillary first premolar was established. Simulated cemented composite resin onlay markedly reduces occlusal stress in the underlying dentine of large MOD preparation. Oblique occlusal force imparts substantially higher stress to large composite resin inlay than to the adjacent dentine.-
dc.languageeng-
dc.publisherBioMed Central Ltd. The Journal's web site is located at http://www.biomedical-engineering-online.com-
dc.relation.ispartofBioMedical Engineering OnLine-
dc.rightsBioMedical Engineering OnLine. Copyright © BioMed Central Ltd.-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleInfluence of the indirect restoration design on the fracture resistance: a finite element study-
dc.typeArticle-
dc.identifier.emailMei, L: mei1123@hku.hk-
dc.identifier.emailChu, CH: chchu@hku.hk-
dc.identifier.authorityMei, L=rp01840-
dc.identifier.authorityChu, CH=rp00022-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1186/s12938-015-0115-4-
dc.identifier.pmid26758615-
dc.identifier.pmcidPMC5002181-
dc.identifier.scopuseid_2-s2.0-84954394466-
dc.identifier.hkuros258481-
dc.identifier.volume15-
dc.identifier.issue1-
dc.identifier.spagearticle no. 3-
dc.identifier.epagearticle no. 3-
dc.identifier.eissn1475-925X-
dc.identifier.isiWOS:000367872700001-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl1475-925X-

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