Biomechanical performance of three fiberglass post cementation techniques: Imaging, in vitro, and in silico analysis

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorOsaka University Graduate School of Dentistry-
Autor(es): dc.contributorCentro Universitario do Norte Paulista-UNIPOS UNORP-
Autor(es): dc.creatorHoshino, Isis Almela Endo-
Autor(es): dc.creatorDos Santos, Paulo Henrique-
Autor(es): dc.creatorBriso, Andre Luiz Fraga-
Autor(es): dc.creatorSundfeld, Renato Herman-
Autor(es): dc.creatorYamaguchi, Satoshi-
Autor(es): dc.creatorRocha, Eduardo Passos-
Autor(es): dc.creatorAnchieta, Rodolfo Bruniera-
Data de aceite: dc.date.accessioned2025-08-21T18:00:30Z-
Data de disponibilização: dc.date.available2025-08-21T18:00:30Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2022-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.2186/jpr.JPR_D_21_00253-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/249543-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/249543-
Descrição: dc.descriptionPurpose: The structural integrity of the resin cement layer, the bond strength, and the biomechanical behavior of different fiberglass post cementation techniques were evaluated. Methods: Thirty-three bovine incisors were divided into three groups (n = 11): conventional fiberglass post (CFP), conventional fiberglass post in flared root canals (CFL), and relined fiberglass post (RFP). Six specimens from each group were submitted for high-resolution microcomputed tomography (μCT) to evaluate the integrity and presence/volume of voids at the resin cement layer. Finite element analysis (FEA) of two three-dimensional (3D) models of each group were conducted, one considered ideal (without interface defects) and another containing the conditions identified in the μCT analysis. Push-out bond strength tests were conducted for all specimens. Results: The CFL group had the greatest mean values of void (Thirds cervical: 73.67; middle: 95.67; apical: 47.33) and gap concentration (Thirds cervical: 14.67; middle: 15.83; apical: 8.33) compared with CFP and RFP. A significant difference in bond strength was observed between the cervical (1.33 MPa) and middle thirds (1.85 MPa) compared with the apical third (4.85 MPa) of the CFL. A significant difference was observed in the bond strength in the CFL (1.33 MPa) and RFP (3.29 MPa) in the cervical third, which were statistically similar to the bond strength of the CFP. The tensile stress distributions were similar in most structures, localized in the cervical region on the lingual surface. Conclusions: Structural defects in the interface layer might influence the bond strength and biomechanical behavior under the different fiberglass post cementations.-
Descrição: dc.descriptionDepartment of Preventive Dentistry and Restorative Dentistry São Paulo State University (UNESP) School of Dentistry, SP-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics São Paulo State University (UNESP) School of Dentistry, SP-
Descrição: dc.descriptionDepartment of Biomaterials Science Osaka University Graduate School of Dentistry, Osaka-
Descrição: dc.descriptionDepartment of Prosthodontics Centro Universitario do Norte Paulista-UNIPOS UNORP, SP-
Descrição: dc.descriptionDepartment of Preventive Dentistry and Restorative Dentistry São Paulo State University (UNESP) School of Dentistry, SP-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics São Paulo State University (UNESP) School of Dentistry, SP-
Formato: dc.format103-111-
Idioma: dc.languageen-
Relação: dc.relationJournal of Prosthodontic Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCementation-
Palavras-chave: dc.subjectFiberglass post-
Palavras-chave: dc.subjectFinite element analysis-
Palavras-chave: dc.subjectMicro CT-
Palavras-chave: dc.subjectPorosity-
Título: dc.titleBiomechanical performance of three fiberglass post cementation techniques: Imaging, in vitro, and in silico analysis-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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