Publicação:
Influence of occlusal anatomy on acrylic resin CAD/CAM crowns fracture load and stress distribution

dc.contributor.authorBorges, Alexandre Luiz Souto [UNESP]
dc.contributor.authorDe Lima, Aline Lins [UNESP]
dc.contributor.authorCampaner, Larissa Mendes [UNESP]
dc.contributor.authorBottino, Marco Antonio [UNESP]
dc.contributor.authorDe Oliveira Dal Piva, Amanda Maria [UNESP]
dc.contributor.authorTribst, João Paulo Mendes [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-05-01T04:26:40Z
dc.date.available2022-05-01T04:26:40Z
dc.date.issued2021-05-11
dc.description.abstractObjectives: This study compared the influence of occlusal anatomy on acrylic CAD/CAM crowns fracture load and stress distribution. The null hypothesis was that there would be no difference between the provisional crowns fracture load and stress according to different occlusal anatomy. Methods: A full-crown preparation was simulated using dentin analogue (G10, Protec, São Paulo, Brazil) totaling 20 identical preparations. Next, twenty acrylic crowns were milled using different occlusal design parameter (Young or Adult) available in the software database. The crowns were cemented (Temp-bond, NE Kerr Dental, Brea, CA, USA) and fractured using a compressive load (0.5 mm/min of cross-head speed). Data were analyzed by using one-way ANOVA and Tukey tests (p< 0.05). A similar geometry was modeled and exported to the analysis software to perform a static structural analysis. The maximum principal stress was calculated using the finite element method with 300 N chewing load simulation. Results: The occlusal anatomy significantly influenced the load-to-fracture (p<0.05). Young design showed lower fracture load (1139±132 N) than Adult design (2007±345 N). The tensile stress distribution showed a similar pattern for both groups however the highest stress peak was calculated for Young design (76 MPa) in the occlusal surface. Conclusion: The anatomy design with higher cusp angulation and occlusal sulcus more evident can increase the stress concentration and reduce the fracture load for acrylic resin CAD/CAM crowns.en
dc.description.affiliationDepartment of Dental Material and Prosthodontics São Paulo State University Institute of Science and Technology
dc.description.affiliationUnespDepartment of Dental Material and Prosthodontics São Paulo State University Institute of Science and Technology
dc.identifierhttp://dx.doi.org/10.5195/D3000.2021.118
dc.identifier.citationDentistry 3000, v. 9, n. 1, 2021.
dc.identifier.doi10.5195/D3000.2021.118
dc.identifier.issn2167-8677
dc.identifier.scopus2-s2.0-85106956054
dc.identifier.urihttp://hdl.handle.net/11449/233145
dc.language.isoeng
dc.relation.ispartofDentistry 3000
dc.sourceScopus
dc.subjectAcrylic Resins
dc.subjectComputer-Aided Design
dc.subjectCrowns
dc.subjectFinite Element Analysis
dc.subjectWeight-Bearing
dc.titleInfluence of occlusal anatomy on acrylic resin CAD/CAM crowns fracture load and stress distributionen
dc.typeArtigo
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Ciência e Tecnologia, São José dos Campospt
unesp.departmentMateriais Odontológicos e Prótese - ICTpt

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