Functional or Nonfunctional Cusps Preservation for Molars Restored with Indirect Composite or Glass-Ceramic Onlays: 3D FEA Study

Evidence regarding the effect of the onlay preparation design for different CAD/CAM restorative materials considering the preservation of cusps is lacking. Molars were 3D-modeled in four preparation designs for onlay restoration: traditional design with functional cusp coverage (TFC), non-retentive...

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Autores principales:	Pablo Lenin Benitez Sellan, Larissa Mendes Campaner, João Paulo Mendes Tribst, Amanda Maria de Oliveira Dal Piva, Guilherme Schmitt de Andrade, Alexandre Luiz Souto Borges, Eduardo Bresciani, Antonio Lanzotti, Pietro Ausiello
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dental materials finite element analysis prosthodontics biomechanics Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/53568d609cf5434f9389a8a7f360331a
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spelling	oai:doaj.org-article:53568d609cf5434f9389a8a7f360331a2021-11-11T18:48:32ZFunctional or Nonfunctional Cusps Preservation for Molars Restored with Indirect Composite or Glass-Ceramic Onlays: 3D FEA Study10.3390/polym132138312073-4360https://doaj.org/article/53568d609cf5434f9389a8a7f360331a2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3831https://doaj.org/toc/2073-4360Evidence regarding the effect of the onlay preparation design for different CAD/CAM restorative materials considering the preservation of cusps is lacking. Molars were 3D-modeled in four preparation designs for onlay restoration: traditional design with functional cusp coverage (TFC), non-retentive design with functional cusp coverage (NFC), traditional design with non-functional cusp coverage (TNFC) and non-retentive design with non-functional cusp coverage (NNFC). The restorations were simulated with two CAD/CAM restorative materials: LD—lithium disilicate (IPS e.max CAD) and RC—resin composite (GrandioBloc). A 100 N axial load was applied to the occlusal surface, simulating the centric contact point. Von Mises (VM) and maximum principal (Pmax) stress were evaluated for restorations, cement layer and dental substrate. The non-retentive preparation design reduced the stress concentration in the tooth structure in comparison to the conventional retentive design. For LD onlays, the stress distribution on the restoration intaglio surface showed that the preparation design, as well as the prepared cusp, influenced the stress magnitude. The non-retentive preparation design provided better load distribution in both restorative materials and more advantageous for molar structure. The resin composite restoration on thenon-functional cusp is recommended when the functional cusp is preserved in order to associate conservative dentistry and low-stress magnitude.Pablo Lenin Benitez SellanLarissa Mendes CampanerJoão Paulo Mendes TribstAmanda Maria de Oliveira Dal PivaGuilherme Schmitt de AndradeAlexandre Luiz Souto BorgesEduardo BrescianiAntonio LanzottiPietro AusielloMDPI AGarticledental materialsfinite element analysisprosthodonticsbiomechanicsOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3831, p 3831 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dental materials finite element analysis prosthodontics biomechanics Organic chemistry QD241-441
spellingShingle	dental materials finite element analysis prosthodontics biomechanics Organic chemistry QD241-441 Pablo Lenin Benitez Sellan Larissa Mendes Campaner João Paulo Mendes Tribst Amanda Maria de Oliveira Dal Piva Guilherme Schmitt de Andrade Alexandre Luiz Souto Borges Eduardo Bresciani Antonio Lanzotti Pietro Ausiello Functional or Nonfunctional Cusps Preservation for Molars Restored with Indirect Composite or Glass-Ceramic Onlays: 3D FEA Study
description	Evidence regarding the effect of the onlay preparation design for different CAD/CAM restorative materials considering the preservation of cusps is lacking. Molars were 3D-modeled in four preparation designs for onlay restoration: traditional design with functional cusp coverage (TFC), non-retentive design with functional cusp coverage (NFC), traditional design with non-functional cusp coverage (TNFC) and non-retentive design with non-functional cusp coverage (NNFC). The restorations were simulated with two CAD/CAM restorative materials: LD—lithium disilicate (IPS e.max CAD) and RC—resin composite (GrandioBloc). A 100 N axial load was applied to the occlusal surface, simulating the centric contact point. Von Mises (VM) and maximum principal (Pmax) stress were evaluated for restorations, cement layer and dental substrate. The non-retentive preparation design reduced the stress concentration in the tooth structure in comparison to the conventional retentive design. For LD onlays, the stress distribution on the restoration intaglio surface showed that the preparation design, as well as the prepared cusp, influenced the stress magnitude. The non-retentive preparation design provided better load distribution in both restorative materials and more advantageous for molar structure. The resin composite restoration on thenon-functional cusp is recommended when the functional cusp is preserved in order to associate conservative dentistry and low-stress magnitude.
format	article
author	Pablo Lenin Benitez Sellan Larissa Mendes Campaner João Paulo Mendes Tribst Amanda Maria de Oliveira Dal Piva Guilherme Schmitt de Andrade Alexandre Luiz Souto Borges Eduardo Bresciani Antonio Lanzotti Pietro Ausiello
author_facet	Pablo Lenin Benitez Sellan Larissa Mendes Campaner João Paulo Mendes Tribst Amanda Maria de Oliveira Dal Piva Guilherme Schmitt de Andrade Alexandre Luiz Souto Borges Eduardo Bresciani Antonio Lanzotti Pietro Ausiello
author_sort	Pablo Lenin Benitez Sellan
title	Functional or Nonfunctional Cusps Preservation for Molars Restored with Indirect Composite or Glass-Ceramic Onlays: 3D FEA Study
title_short	Functional or Nonfunctional Cusps Preservation for Molars Restored with Indirect Composite or Glass-Ceramic Onlays: 3D FEA Study
title_full	Functional or Nonfunctional Cusps Preservation for Molars Restored with Indirect Composite or Glass-Ceramic Onlays: 3D FEA Study
title_fullStr	Functional or Nonfunctional Cusps Preservation for Molars Restored with Indirect Composite or Glass-Ceramic Onlays: 3D FEA Study
title_full_unstemmed	Functional or Nonfunctional Cusps Preservation for Molars Restored with Indirect Composite or Glass-Ceramic Onlays: 3D FEA Study
title_sort	functional or nonfunctional cusps preservation for molars restored with indirect composite or glass-ceramic onlays: 3d fea study
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/53568d609cf5434f9389a8a7f360331a
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Functional or Nonfunctional Cusps Preservation for Molars Restored with Indirect Composite or Glass-Ceramic Onlays: 3D FEA Study

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