Effect of occlusal anatomy of CAD/CAM feldspathic posterior crowns in the stress concentration and fracture load

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity of Zurich-
Autor(es): dc.creatorBorges, Alexandre Luiz Souto-
Autor(es): dc.creatorTribst, João Paulo Mendes-
Autor(es): dc.creatorde Lima, Aline Lins-
Autor(es): dc.creatorDal Piva, Amanda Maria de Oliveira-
Autor(es): dc.creatorÖzcan, Mutlu-
Data de aceite: dc.date.accessioned2025-08-21T16:31:59Z-
Data de disponibilização: dc.date.available2025-08-21T16:31:59Z-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2020-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/cre2.454-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/233244-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/233244-
Descrição: dc.descriptionObjectives: This study evaluated the effect of restoration occlusal design on the maximum fracture load and stress distribution of a feldspathic ceramic crown. Materials and Methods: Twenty dentin analogues were used to simulate a full-crown preparation. Next, 20 feldspathic crowns were milled according to the occlusal design parameter available in the CAD database (Young or Adult). The crowns were cemented with dual cure resin-cement and loaded until fracture at 1 mm/min crosshead speed. Data were analyzed by using one-way ANOVA and Tukey tests (p < 0.05). The same geometry and experimental setup was modeled and exported to the computer aided engineering software and tensile stress concentration was calculated using the finite element method with 300 N occlusal load simulation. Results: The occlusal anatomy significantly influenced the load-to-fracture (p < 0.05). Adult design showed higher mean values (1149 ± 201 N) than Young design (454 ± 77 N). The maximum principal stress criteria showed similar stress pattern for both designs, however, the highest stress concentration was calculated for Young design (91 MPa) in the occlusal surface. Conclusions: An anatomy design with reduced cusp angulation and less evident occlusal sulcus can reduce the stress concentration and increase the fracture load for feldspathic CAD/CAM posterior crowns.-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthetics São Paulo State University (UNESP) Institute of Science and Technology-
Descrição: dc.descriptionDivision of Dental Biomaterials Center for Dental and Oral Medicine Clinic for Reconstructive Dentistry University of Zurich-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthetics São Paulo State University (UNESP) Institute of Science and Technology-
Idioma: dc.languageen-
Relação: dc.relationClinical and Experimental Dental Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCAD/CAM-
Palavras-chave: dc.subjectcrown-
Palavras-chave: dc.subjectfinite element analysis-
Palavras-chave: dc.subjectmandibular molar-
Palavras-chave: dc.subjectstress-
Título: dc.titleEffect of occlusal anatomy of CAD/CAM feldspathic posterior crowns in the stress concentration and fracture load-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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