Finite element analysis of the influence of geometry and design of zirconia crowns on stress distribution

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade Nove de Julho (UNINOVE)
dc.creatorAnami, Lilian Costa [UNESP]
dc.creatorCosta Lima, Julia Magalhaes da [UNESP]
dc.creatorCorazza, Pedro Henrique [UNESP]
dc.creatorColauto Yamamoto, Eron Toshio
dc.creatorBottino, Marco Antonio [UNESP]
dc.creatorSouto Borges, Alexandre Luiz [UNESP]
dc.date2015-10-21T13:15:17Z
dc.date2015-10-21T13:15:17Z
dc.date2015-02-01
dc.date.accessioned2023-09-12T06:42:58Z
dc.date.available2023-09-12T06:42:58Z
dc.identifierhttp://onlinelibrary.wiley.com/doi/10.1111/jopr.12175/abstract;jsessionid=114E44F0EFA6C75DFEED9B09DA0F194E.f02t03
dc.identifierJournal Of Prosthodontics-implant Esthetic And Reconstructive Dentistry. Hoboken: Wiley-blackwell, v. 24, n. 2, p. 146-151, 2015.
dc.identifier1059-941X
dc.identifierhttp://hdl.handle.net/11449/128899
dc.identifier10.1111/jopr.12175
dc.identifierWOS:000350152100008
dc.identifier9234456003563666
dc.identifier6043459304176015
dc.identifier0000-0002-5707-7565
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8778243
dc.descriptionPurpose: To evaluate the influence of the geometry and design of prosthetic crown preparations on stress distribution in compression tests, using finite element analysis (FEA). Materials and Methods: Six combinations of 3D drawings of all-ceramic crowns (yttria-stabilized zirconia framework and porcelain veneer) were evaluated: F, flat preparation and simplified crown; FC, flat preparation and crown with contact point; FCM, flat preparation and modified crown; A, anatomical preparation and simplified anatomical crown framework; AC, anatomical preparation and crown with contact point; and ACM, anatomical preparation and modified crown. Bonded contact types at all interfaces with the mesh were assigned, and the material properties used were according to the literature. A 200 N vertical load was applied at the center of each model. The maximum principal stresses were quantitatively and qualitatively analyzed. Results: The highest values of tensile stress were observed at the interface between the ceramics in the region under the load application for the simplified models (F and A). Reductions in stress values were observed for the model with the anatomical preparation and modified infrastructure (ACM). The stress distribution in the flat models was similar to that of their respective anatomical models. Conclusions: The modified design of the zirconia coping reduces the stress concentration at the interface with the veneer ceramic, and the simplified preparation can exert a stress distribution similar to that of the anatomical preparation at and near the load point, when load is applied to the center of the crown.
dc.descriptionUniversidade Estadual Paulista (UNESP), Instituto de Ciências e Tecnologia (ICT), Departamento de Materiais Odontológicos e Prótese, BR-12245000 São José dos Campos, SP, Brasil
dc.descriptionUniversidade Nove de Julho (UNINOVE), Departamento de Materiais Odontológicos e Prótese, São Paulo, SP, Brasil
dc.descriptionUniversidade Estadual Paulista (UNESP), Instituto de Ciências e Tecnologia (ICT), Departamento de Materiais Odontológicos e Prótese, BR-12245000 São José dos Campos, SP, Brasil
dc.format146-151
dc.languageeng
dc.publisherWiley-Blackwell
dc.relationJournal Of Prosthodontics-implant Esthetic And Reconstructive Dentistry
dc.relation1.745
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectPreparation geometry
dc.subjectRestoration design
dc.subjectBilaminate system
dc.subjectZirconia
dc.titleFinite element analysis of the influence of geometry and design of zirconia crowns on stress distribution
dc.typeArtigo


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