Endocrown restorations: Influence of dental remnant and restorative material on stress distribution
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.dental.2018.06.012 http://hdl.handle.net/11449/179959 |
Resumo: | Objective: The goal of this study was to evaluate the stress distribution in a tooth/restoration system according to the factors “amount of dental remnant” (3 levels) and “restorative material” (2 levels). Methods: Three endodontically treated maxillary molars were modeled with CAD software for conducting non-linear finite element analysis (FEA), each with a determined amount of dental remnant of 1.5, 3, or 4.5 mm. Models were duplicated, and half received restorations in lithium disilicate (IPS e.max CAD), while the other half received leucite ceramic restorations (IPS Empress CAD), both from Ivoclar Vivadent (Schaan, Liechtenstein). The solids were imported to analysis software (ANSYS 17.2, ANSYS Inc., Houston, TX, USA) in STEP format. All contacts involving the resin cement were considered no-separation, whereas between teeth and fixation cylinder, the contact was considered perfectly bonded. The mechanical properties of each structure were reported, and the materials were considered isotropic, linearly elastic, and homogeneous. An axial load (300 N) was applied at the occlusal surface (triploidism area). Results were determined by colorimetric graphs of maximum principal stress (MPS) on tooth remnant, cement line, and restoration. Results: MPS revealed that both factors influenced the stress distribution for all structures; the higher the material's elastic modulus, the higher the stress concentration on the restoration and the lower the stress concentration on the cement line. Moreover, the greater the dental crown remnant, the higher the stress concentration on the restoration. Thus, the remaining dental tissue should always be preserved. Significance: In situations in which few dental remnants are available, the thicker the restoration, the higher the concentration of stresses in its structure, protecting the adhesive interface from potential adhesive failures. Results are more promising when the endocrown is fabricated with lithium disilicate ceramic. |
id |
UNSP_5c84612afe7caffa4adf325675d19b5f |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/179959 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Endocrown restorations: Influence of dental remnant and restorative material on stress distributionCeramicsDental restoration failureEndodontically treated teethFinite element analysisMonoblock restorationObjective: The goal of this study was to evaluate the stress distribution in a tooth/restoration system according to the factors “amount of dental remnant” (3 levels) and “restorative material” (2 levels). Methods: Three endodontically treated maxillary molars were modeled with CAD software for conducting non-linear finite element analysis (FEA), each with a determined amount of dental remnant of 1.5, 3, or 4.5 mm. Models were duplicated, and half received restorations in lithium disilicate (IPS e.max CAD), while the other half received leucite ceramic restorations (IPS Empress CAD), both from Ivoclar Vivadent (Schaan, Liechtenstein). The solids were imported to analysis software (ANSYS 17.2, ANSYS Inc., Houston, TX, USA) in STEP format. All contacts involving the resin cement were considered no-separation, whereas between teeth and fixation cylinder, the contact was considered perfectly bonded. The mechanical properties of each structure were reported, and the materials were considered isotropic, linearly elastic, and homogeneous. An axial load (300 N) was applied at the occlusal surface (triploidism area). Results were determined by colorimetric graphs of maximum principal stress (MPS) on tooth remnant, cement line, and restoration. Results: MPS revealed that both factors influenced the stress distribution for all structures; the higher the material's elastic modulus, the higher the stress concentration on the restoration and the lower the stress concentration on the cement line. Moreover, the greater the dental crown remnant, the higher the stress concentration on the restoration. Thus, the remaining dental tissue should always be preserved. Significance: In situations in which few dental remnants are available, the thicker the restoration, the higher the concentration of stresses in its structure, protecting the adhesive interface from potential adhesive failures. Results are more promising when the endocrown is fabricated with lithium disilicate ceramic.Department of Dental Materials and Prosthodontics São Paulo State University (Unesp) Institute of Science and Technology, Av. Eng. Francisco José Longo, n° 777, Jardim São DimasDepartment of Restorative Dentistry São Paulo State University (Unesp) Institute of Science and Technology, Av. Eng. Francisco José Longo, n° 777, Jardim São DimasDepartment of Dental Materials and Prosthodontics São Paulo State University (Unesp) Institute of Science and Technology, Av. Eng. Francisco José Longo, n° 777, Jardim São DimasDepartment of Restorative Dentistry São Paulo State University (Unesp) Institute of Science and Technology, Av. Eng. Francisco José Longo, n° 777, Jardim São DimasUniversidade Estadual Paulista (Unesp)Tribst, João Paulo Mendes [UNESP]Dal Piva, Amanda Maria de Oliveira [UNESP]Madruga, Camila Ferreira Leite [UNESP]Valera, Marcia Carneiro [UNESP]Borges, Alexandre Luiz Souto [UNESP]Bresciani, Eduardo [UNESP]de Melo, Renata Marques [UNESP]2018-12-11T17:37:27Z2018-12-11T17:37:27Z2018-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1466-1473application/pdfhttp://dx.doi.org/10.1016/j.dental.2018.06.012Dental Materials, v. 34, n. 10, p. 1466-1473, 2018.0109-5641http://hdl.handle.net/11449/17995910.1016/j.dental.2018.06.0122-s2.0-850487027292-s2.0-85048702729.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengDental Materials2,106info:eu-repo/semantics/openAccess2023-12-16T06:23:34Zoai:repositorio.unesp.br:11449/179959Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-16T06:23:34Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Endocrown restorations: Influence of dental remnant and restorative material on stress distribution |
title |
Endocrown restorations: Influence of dental remnant and restorative material on stress distribution |
spellingShingle |
Endocrown restorations: Influence of dental remnant and restorative material on stress distribution Tribst, João Paulo Mendes [UNESP] Ceramics Dental restoration failure Endodontically treated teeth Finite element analysis Monoblock restoration |
title_short |
Endocrown restorations: Influence of dental remnant and restorative material on stress distribution |
title_full |
Endocrown restorations: Influence of dental remnant and restorative material on stress distribution |
title_fullStr |
Endocrown restorations: Influence of dental remnant and restorative material on stress distribution |
title_full_unstemmed |
Endocrown restorations: Influence of dental remnant and restorative material on stress distribution |
title_sort |
Endocrown restorations: Influence of dental remnant and restorative material on stress distribution |
author |
Tribst, João Paulo Mendes [UNESP] |
author_facet |
Tribst, João Paulo Mendes [UNESP] Dal Piva, Amanda Maria de Oliveira [UNESP] Madruga, Camila Ferreira Leite [UNESP] Valera, Marcia Carneiro [UNESP] Borges, Alexandre Luiz Souto [UNESP] Bresciani, Eduardo [UNESP] de Melo, Renata Marques [UNESP] |
author_role |
author |
author2 |
Dal Piva, Amanda Maria de Oliveira [UNESP] Madruga, Camila Ferreira Leite [UNESP] Valera, Marcia Carneiro [UNESP] Borges, Alexandre Luiz Souto [UNESP] Bresciani, Eduardo [UNESP] de Melo, Renata Marques [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Tribst, João Paulo Mendes [UNESP] Dal Piva, Amanda Maria de Oliveira [UNESP] Madruga, Camila Ferreira Leite [UNESP] Valera, Marcia Carneiro [UNESP] Borges, Alexandre Luiz Souto [UNESP] Bresciani, Eduardo [UNESP] de Melo, Renata Marques [UNESP] |
dc.subject.por.fl_str_mv |
Ceramics Dental restoration failure Endodontically treated teeth Finite element analysis Monoblock restoration |
topic |
Ceramics Dental restoration failure Endodontically treated teeth Finite element analysis Monoblock restoration |
description |
Objective: The goal of this study was to evaluate the stress distribution in a tooth/restoration system according to the factors “amount of dental remnant” (3 levels) and “restorative material” (2 levels). Methods: Three endodontically treated maxillary molars were modeled with CAD software for conducting non-linear finite element analysis (FEA), each with a determined amount of dental remnant of 1.5, 3, or 4.5 mm. Models were duplicated, and half received restorations in lithium disilicate (IPS e.max CAD), while the other half received leucite ceramic restorations (IPS Empress CAD), both from Ivoclar Vivadent (Schaan, Liechtenstein). The solids were imported to analysis software (ANSYS 17.2, ANSYS Inc., Houston, TX, USA) in STEP format. All contacts involving the resin cement were considered no-separation, whereas between teeth and fixation cylinder, the contact was considered perfectly bonded. The mechanical properties of each structure were reported, and the materials were considered isotropic, linearly elastic, and homogeneous. An axial load (300 N) was applied at the occlusal surface (triploidism area). Results were determined by colorimetric graphs of maximum principal stress (MPS) on tooth remnant, cement line, and restoration. Results: MPS revealed that both factors influenced the stress distribution for all structures; the higher the material's elastic modulus, the higher the stress concentration on the restoration and the lower the stress concentration on the cement line. Moreover, the greater the dental crown remnant, the higher the stress concentration on the restoration. Thus, the remaining dental tissue should always be preserved. Significance: In situations in which few dental remnants are available, the thicker the restoration, the higher the concentration of stresses in its structure, protecting the adhesive interface from potential adhesive failures. Results are more promising when the endocrown is fabricated with lithium disilicate ceramic. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:37:27Z 2018-12-11T17:37:27Z 2018-10-01 |
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/10.1016/j.dental.2018.06.012 Dental Materials, v. 34, n. 10, p. 1466-1473, 2018. 0109-5641 http://hdl.handle.net/11449/179959 10.1016/j.dental.2018.06.012 2-s2.0-85048702729 2-s2.0-85048702729.pdf |
url |
http://dx.doi.org/10.1016/j.dental.2018.06.012 http://hdl.handle.net/11449/179959 |
identifier_str_mv |
Dental Materials, v. 34, n. 10, p. 1466-1473, 2018. 0109-5641 10.1016/j.dental.2018.06.012 2-s2.0-85048702729 2-s2.0-85048702729.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Dental Materials 2,106 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1466-1473 application/pdf |
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_ |
1799965307770503168 |