Fatigue survival of endodontically treated teeth restored with different fiber-reinforced composite resin post strategies versus universal 2-piece fiber post system: An in vitro study

Página do item simplificado
dc.contributor.authorPenteado, Marcela Moreira [UNESP]
dc.contributor.authorde Andrade, Guilherme Schmitt [UNESP]
dc.contributor.authorAraujo, Rodrigo Máximo [UNESP]
dc.contributor.authorBorges, Alexandre Luiz Souto [UNESP]
dc.contributor.authorValandro, Luiz Felipe
dc.contributor.authorPereira, Gabriel Kalil Rocha
dc.contributor.authorda Silva, João Maurício Ferraz [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.date.accessioned2023-07-29T16:07:26Z
dc.date.available2023-07-29T16:07:26Z
dc.date.issued2023-03-01
dc.description.abstractStatement of problem: Various strategies have been proposed to reduce the cement space of foundation restorations for endodontically treated teeth. However, they may add more operative steps, or the dentist must keep different sizes of drills and posts in stock. A 2-piece universal adjustable post system has been developed to overcome this problem, but whether the system has acceptable fatigue survival performance is unclear. Purpose: The purpose of this in vitro study was to evaluate the fatigue survival and stress distribution of endodontically treated teeth without a ferrule and restored with different glass fiber post strategies versus a recently introduced universal 2-piece fiber post system. Material and methods: Bovine incisor roots were randomly assigned to 3 groups as per the post used (n=13): adapted glass fiber post with post space preparation of the same size, composite resin-custom glass fiber post (CTM), and universal 2-piece glass fiber-reinforced composite resin post (UNI). The posts were adhesively luted, the composite resin core was added, and a composite resin crown was produced with computer-aided design and computer-aided manufacturing (CAD-CAM), and then adhesively luted to each core. A fatigue test was performed with the stepwise stress method (10 000 cycles/step; 20 Hz; load=100 N to 750 N; step=50 N) until fracture, and the failure mode analyzed. The stress distribution was evaluated by finite element analysis with the maximum principal stress criteria by following the parameters of the in vitro test. The solids were considered homogeneous, linear, and isotropic, except for the glass fiber post (orthotropic), and a load of 450 N at 30 degrees was applied. The fatigue failure load and the number of cycles for failure were analyzed with Kaplan-Meier and Mantel-Cox (log rank test) (α=.05). The finite element analysis results were analyzed with colorimetric graphs. Results: The highest fatigue failure load and the number of cycles for failure were found in the UNI system, whereas the lowest results were found in the CTM group. All groups exhibited repairable failures. The finite element analysis showed the lowest stress in root dentin in the UNI system. The CTM system had the largest stress regions at the dentin and dentin-core interface. Conclusions: The use of a 2-piece universal glass fiber post system resulted in more fatigue behavior compared with composite resin-custom glass fiber posts.en
dc.description.affiliationPhD student Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University UNESP, SP
dc.description.affiliationAssistant Professor Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University UNESP, SP
dc.description.affiliationAssociate Professor Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University UNESP, SP
dc.description.affiliationAssociate Professor MSciD PhD Post-Graduate Program in Oral Science Faculty of Dentistry Federal University of Santa Maria UFSM, RS
dc.description.affiliationAdjunct Professor MSciD-PhD Post-Graduate Program in Oral Science Faculty of Dentistry Federal University of Santa Maria UFSM, RS
dc.description.affiliationUnespPhD student Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University UNESP, SP
dc.description.affiliationUnespAssistant Professor Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University UNESP, SP
dc.description.affiliationUnespAssociate Professor Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University UNESP, SP
dc.format.extent456-463
dc.identifierhttp://dx.doi.org/10.1016/j.prosdent.2021.05.020
dc.identifier.citationJournal of Prosthetic Dentistry, v. 129, n. 3, p. 456-463, 2023.
dc.identifier.doi10.1016/j.prosdent.2021.05.020
dc.identifier.issn1097-6841
dc.identifier.issn0022-3913
dc.identifier.scopus2-s2.0-85149272169
dc.identifier.urihttp://hdl.handle.net/11449/249723
dc.language.isoeng
dc.relation.ispartofJournal of Prosthetic Dentistry
dc.sourceScopus
dc.titleFatigue survival of endodontically treated teeth restored with different fiber-reinforced composite resin post strategies versus universal 2-piece fiber post system: An in vitro studyen
dc.typeArtigo
unesp.author.orcid0000-0001-9299-8792[2]
unesp.author.orcid0000-0002-5707-7565[4]
unesp.author.orcid0000-0001-7203-6924[5]
unesp.author.orcid0000-0002-9077-9067[6]

Arquivos

Coleções

Artigos - Materiais Odontológicos e Prótese - ICT