Substrate Rigidity Effect on CAD/CAM Restorations at Different Thicknesses

Detalhes bibliográficos
Autor(a) principal: Pucci, César Rogério [UNESP]
Data de Publicação: 2022
Outros Autores: Mafetano, Ana Paula Valente Pinho [UNESP], Borges, Alexandre Luiz Souto [UNESP], De Andrade, Guilherme Schmitt, Dal Piva, Amanda Maria De Oliveira, Kleverlaan, Cornelis J., Tribst, João Paulo Mendes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1055/s-0042-1757910
http://hdl.handle.net/11449/248094
Resumo: Objectives  This article evaluated the effect of substrates rigidities on the post-fatigue fracture resistance of adhesively cemented simplified restorations in lithium disilicate glass ceramic. Methods  Precrystalized computer-aided design/computer-aided manufacturing ceramic blocks were processed into disc-shaped specimens (n = 10, O = 10 mm), mimicking a simplified restoration at two thicknesses (0.5 and 1.0 mm). Thereafter, the discs were cemented onto different base substrates (dentin analogue [control], dentin analogue with a central core build-up of resin composite [RC], or glass ionomer cement [GIC]). The specimens were subjected to mechanical cycling in a chewing simulator (100 N, 1 × 10 6cycles, 4 Hz) and then subjected to thermocycling aging (10,000 cycles, 5/37/55°C, 30 seconds). After the fatigue protocol, the specimens were loaded until failure (N) in a universal testing machine. Finite element analysis calculated the first principal stress at the center of the adhesive interface. Results  The results showed that restoration thickness, type of substrate, and their interaction were statistically significant (one-way analysis of variance; p < 0.001). Regardless the restoration thickness a higher fracture load was observed for specimens cemented to dentin analogue. Among the base materials, RC build-up presented the highest fracture load and lower stress magnitude for both restoration thicknesses in comparison with GIC build-up. The 0.5-mm restoration showed higher stress peak and lower fracture load when submitted to the compressive test. Conclusion  More flexible base material reduces the fracture load and increases the stress magnitude of adhesively cemented lithium disilicate restorations regardless the ceramic thickness. Therefore, more rigid substrates are suggested to be used to prevent restoration mechanical failures.
id UNSP_fb376bf10d640ea24b15dbc21ef0e9da
oai_identifier_str oai:repositorio.unesp.br:11449/248094
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling Substrate Rigidity Effect on CAD/CAM Restorations at Different Thicknessesadhesioncyclic loadingdental ceramicsfinite element analysismonolithic restorations.Objectives  This article evaluated the effect of substrates rigidities on the post-fatigue fracture resistance of adhesively cemented simplified restorations in lithium disilicate glass ceramic. Methods  Precrystalized computer-aided design/computer-aided manufacturing ceramic blocks were processed into disc-shaped specimens (n = 10, O = 10 mm), mimicking a simplified restoration at two thicknesses (0.5 and 1.0 mm). Thereafter, the discs were cemented onto different base substrates (dentin analogue [control], dentin analogue with a central core build-up of resin composite [RC], or glass ionomer cement [GIC]). The specimens were subjected to mechanical cycling in a chewing simulator (100 N, 1 × 10 6cycles, 4 Hz) and then subjected to thermocycling aging (10,000 cycles, 5/37/55°C, 30 seconds). After the fatigue protocol, the specimens were loaded until failure (N) in a universal testing machine. Finite element analysis calculated the first principal stress at the center of the adhesive interface. Results  The results showed that restoration thickness, type of substrate, and their interaction were statistically significant (one-way analysis of variance; p < 0.001). Regardless the restoration thickness a higher fracture load was observed for specimens cemented to dentin analogue. Among the base materials, RC build-up presented the highest fracture load and lower stress magnitude for both restoration thicknesses in comparison with GIC build-up. The 0.5-mm restoration showed higher stress peak and lower fracture load when submitted to the compressive test. Conclusion  More flexible base material reduces the fracture load and increases the stress magnitude of adhesively cemented lithium disilicate restorations regardless the ceramic thickness. Therefore, more rigid substrates are suggested to be used to prevent restoration mechanical failures.Department of Restorative Dentistry Institute of Science and Technology São Paulo State University (Unesp), São José dos CamposDepartment of Dentistry Universidade Estadual Do Oeste Do Paraná (UNIOESTE)Department of Dental Materials Science Academic Centre for Dentistry Amsterdam (ACTA) Universiteit Van Amsterdam Vrije UniversiteitDepartment of Oral Regenerative Medicine Academic Centre for Dentistry Amsterdam (ACTA) Universiteit Van Amsterdam Vrije UniversiteitDepartment of Restorative Dentistry Institute of Science and Technology São Paulo State University (Unesp), São José dos CamposUniversidade Estadual Paulista (UNESP)Universidade Estadual Do Oeste Do Paraná (UNIOESTE)Vrije UniversiteitPucci, César Rogério [UNESP]Mafetano, Ana Paula Valente Pinho [UNESP]Borges, Alexandre Luiz Souto [UNESP]De Andrade, Guilherme SchmittDal Piva, Amanda Maria De OliveiraKleverlaan, Cornelis J.Tribst, João Paulo Mendes2023-07-29T13:34:21Z2023-07-29T13:34:21Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1055/s-0042-1757910European Journal of Dentistry.1305-74641305-7456http://hdl.handle.net/11449/24809410.1055/s-0042-17579102-s2.0-85144864468Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEuropean Journal of Dentistryinfo:eu-repo/semantics/openAccess2023-07-29T13:34:21Zoai:repositorio.unesp.br:11449/248094Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:07:32.924793Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Substrate Rigidity Effect on CAD/CAM Restorations at Different Thicknesses
title Substrate Rigidity Effect on CAD/CAM Restorations at Different Thicknesses
spellingShingle Substrate Rigidity Effect on CAD/CAM Restorations at Different Thicknesses
Pucci, César Rogério [UNESP]
adhesion
cyclic loading
dental ceramics
finite element analysis
monolithic restorations.
title_short Substrate Rigidity Effect on CAD/CAM Restorations at Different Thicknesses
title_full Substrate Rigidity Effect on CAD/CAM Restorations at Different Thicknesses
title_fullStr Substrate Rigidity Effect on CAD/CAM Restorations at Different Thicknesses
title_full_unstemmed Substrate Rigidity Effect on CAD/CAM Restorations at Different Thicknesses
title_sort Substrate Rigidity Effect on CAD/CAM Restorations at Different Thicknesses
author Pucci, César Rogério [UNESP]
author_facet Pucci, César Rogério [UNESP]
Mafetano, Ana Paula Valente Pinho [UNESP]
Borges, Alexandre Luiz Souto [UNESP]
De Andrade, Guilherme Schmitt
Dal Piva, Amanda Maria De Oliveira
Kleverlaan, Cornelis J.
Tribst, João Paulo Mendes
author_role author
author2 Mafetano, Ana Paula Valente Pinho [UNESP]
Borges, Alexandre Luiz Souto [UNESP]
De Andrade, Guilherme Schmitt
Dal Piva, Amanda Maria De Oliveira
Kleverlaan, Cornelis J.
Tribst, João Paulo Mendes
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade Estadual Do Oeste Do Paraná (UNIOESTE)
Vrije Universiteit
dc.contributor.author.fl_str_mv Pucci, César Rogério [UNESP]
Mafetano, Ana Paula Valente Pinho [UNESP]
Borges, Alexandre Luiz Souto [UNESP]
De Andrade, Guilherme Schmitt
Dal Piva, Amanda Maria De Oliveira
Kleverlaan, Cornelis J.
Tribst, João Paulo Mendes
dc.subject.por.fl_str_mv adhesion
cyclic loading
dental ceramics
finite element analysis
monolithic restorations.
topic adhesion
cyclic loading
dental ceramics
finite element analysis
monolithic restorations.
description Objectives  This article evaluated the effect of substrates rigidities on the post-fatigue fracture resistance of adhesively cemented simplified restorations in lithium disilicate glass ceramic. Methods  Precrystalized computer-aided design/computer-aided manufacturing ceramic blocks were processed into disc-shaped specimens (n = 10, O = 10 mm), mimicking a simplified restoration at two thicknesses (0.5 and 1.0 mm). Thereafter, the discs were cemented onto different base substrates (dentin analogue [control], dentin analogue with a central core build-up of resin composite [RC], or glass ionomer cement [GIC]). The specimens were subjected to mechanical cycling in a chewing simulator (100 N, 1 × 10 6cycles, 4 Hz) and then subjected to thermocycling aging (10,000 cycles, 5/37/55°C, 30 seconds). After the fatigue protocol, the specimens were loaded until failure (N) in a universal testing machine. Finite element analysis calculated the first principal stress at the center of the adhesive interface. Results  The results showed that restoration thickness, type of substrate, and their interaction were statistically significant (one-way analysis of variance; p < 0.001). Regardless the restoration thickness a higher fracture load was observed for specimens cemented to dentin analogue. Among the base materials, RC build-up presented the highest fracture load and lower stress magnitude for both restoration thicknesses in comparison with GIC build-up. The 0.5-mm restoration showed higher stress peak and lower fracture load when submitted to the compressive test. Conclusion  More flexible base material reduces the fracture load and increases the stress magnitude of adhesively cemented lithium disilicate restorations regardless the ceramic thickness. Therefore, more rigid substrates are suggested to be used to prevent restoration mechanical failures.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
2023-07-29T13:34:21Z
2023-07-29T13:34:21Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1055/s-0042-1757910
European Journal of Dentistry.
1305-7464
1305-7456
http://hdl.handle.net/11449/248094
10.1055/s-0042-1757910
2-s2.0-85144864468
url http://dx.doi.org/10.1055/s-0042-1757910
http://hdl.handle.net/11449/248094
identifier_str_mv European Journal of Dentistry.
1305-7464
1305-7456
10.1055/s-0042-1757910
2-s2.0-85144864468
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv European Journal of Dentistry
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129586862489600