Does overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA study
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1080/10255842.2020.1866561 http://hdl.handle.net/11449/208312 |
Resumo: | This study evaluated the polymerization shrinkage stress of three tooth preparation designs for indirect ceramic overlay by finite element analysis: isthmus preparation (IST); without isthmus preparation (wIST); and non-retentive preparation (nRET). The models were created based in prepared dental typodonts and were digitally impressed with an intraoral scanner. The interfaces in all models were considered perfectly bonded and all materials were considered homogeneous, linear, and isotropic. The polymerization shrinkage of the cement layer (100 µm) was simulated and evaluated by maximum principal stress criteria. The stress peaks followed this sequence: restoration = IST (13.4 MPa) > wIST (9.3 MPa) > nRET (9 MPa); cement layer = IST (16.9 MPa) > wIST (12.6 MPa) > nRET (10-7.5 MPa); and teeth = IST (10.7 MPa) > wIST (10.5 MPa) > (9 MPa). For the cement layer, the non-retentive preparation (nRET) had the lowest shrinkage stress from all the groups, obtaining a more homogeneous stress distribution on the cement surface. Regarding the abutment teeth, the IST generated a higher shrinkage stress area on the dental structure, concentrating higher stress magnitude at the axiopulpar and axiogingival angles. Non-retentive preparation seems to reduce polymerization shrinkage stress. |
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Repositório Institucional da UNESP |
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spelling |
Does overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA studyDental onlaysdental prosthesisdental restoration failurefinite element analysistooth preparationThis study evaluated the polymerization shrinkage stress of three tooth preparation designs for indirect ceramic overlay by finite element analysis: isthmus preparation (IST); without isthmus preparation (wIST); and non-retentive preparation (nRET). The models were created based in prepared dental typodonts and were digitally impressed with an intraoral scanner. The interfaces in all models were considered perfectly bonded and all materials were considered homogeneous, linear, and isotropic. The polymerization shrinkage of the cement layer (100 µm) was simulated and evaluated by maximum principal stress criteria. The stress peaks followed this sequence: restoration = IST (13.4 MPa) > wIST (9.3 MPa) > nRET (9 MPa); cement layer = IST (16.9 MPa) > wIST (12.6 MPa) > nRET (10-7.5 MPa); and teeth = IST (10.7 MPa) > wIST (10.5 MPa) > (9 MPa). For the cement layer, the non-retentive preparation (nRET) had the lowest shrinkage stress from all the groups, obtaining a more homogeneous stress distribution on the cement surface. Regarding the abutment teeth, the IST generated a higher shrinkage stress area on the dental structure, concentrating higher stress magnitude at the axiopulpar and axiogingival angles. Non-retentive preparation seems to reduce polymerization shrinkage stress.Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University (UNESP)Departament of Dentistry Postgraduate Program in Dentistry University of Taubaté (UNITAU)Private PracticeDepartment of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University (UNESP)Universidade Estadual Paulista (Unesp)University of Taubaté (UNITAU)Private Practicede Andrade, Guilherme Schmitt [UNESP]Pinto, Alana Barbosa Alves [UNESP]Tribst, João Paulo MendesChun, Eliseo PabloBorges, Alexandre Luiz Souto [UNESP]de Siqueira Ferreira Anzaloni Saavedra, Guilherme [UNESP]2021-06-25T11:10:06Z2021-06-25T11:10:06Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1080/10255842.2020.1866561Computer Methods in Biomechanics and Biomedical Engineering.1476-82591025-5842http://hdl.handle.net/11449/20831210.1080/10255842.2020.18665612-s2.0-85099202399Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengComputer Methods in Biomechanics and Biomedical Engineeringinfo:eu-repo/semantics/openAccess2021-10-23T19:01:58Zoai:repositorio.unesp.br:11449/208312Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:20:12.668691Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Does overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA study |
title |
Does overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA study |
spellingShingle |
Does overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA study de Andrade, Guilherme Schmitt [UNESP] Dental onlays dental prosthesis dental restoration failure finite element analysis tooth preparation |
title_short |
Does overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA study |
title_full |
Does overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA study |
title_fullStr |
Does overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA study |
title_full_unstemmed |
Does overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA study |
title_sort |
Does overlay preparation design affect polymerization shrinkage stress distribution? A 3D FEA study |
author |
de Andrade, Guilherme Schmitt [UNESP] |
author_facet |
de Andrade, Guilherme Schmitt [UNESP] Pinto, Alana Barbosa Alves [UNESP] Tribst, João Paulo Mendes Chun, Eliseo Pablo Borges, Alexandre Luiz Souto [UNESP] de Siqueira Ferreira Anzaloni Saavedra, Guilherme [UNESP] |
author_role |
author |
author2 |
Pinto, Alana Barbosa Alves [UNESP] Tribst, João Paulo Mendes Chun, Eliseo Pablo Borges, Alexandre Luiz Souto [UNESP] de Siqueira Ferreira Anzaloni Saavedra, Guilherme [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) University of Taubaté (UNITAU) Private Practice |
dc.contributor.author.fl_str_mv |
de Andrade, Guilherme Schmitt [UNESP] Pinto, Alana Barbosa Alves [UNESP] Tribst, João Paulo Mendes Chun, Eliseo Pablo Borges, Alexandre Luiz Souto [UNESP] de Siqueira Ferreira Anzaloni Saavedra, Guilherme [UNESP] |
dc.subject.por.fl_str_mv |
Dental onlays dental prosthesis dental restoration failure finite element analysis tooth preparation |
topic |
Dental onlays dental prosthesis dental restoration failure finite element analysis tooth preparation |
description |
This study evaluated the polymerization shrinkage stress of three tooth preparation designs for indirect ceramic overlay by finite element analysis: isthmus preparation (IST); without isthmus preparation (wIST); and non-retentive preparation (nRET). The models were created based in prepared dental typodonts and were digitally impressed with an intraoral scanner. The interfaces in all models were considered perfectly bonded and all materials were considered homogeneous, linear, and isotropic. The polymerization shrinkage of the cement layer (100 µm) was simulated and evaluated by maximum principal stress criteria. The stress peaks followed this sequence: restoration = IST (13.4 MPa) > wIST (9.3 MPa) > nRET (9 MPa); cement layer = IST (16.9 MPa) > wIST (12.6 MPa) > nRET (10-7.5 MPa); and teeth = IST (10.7 MPa) > wIST (10.5 MPa) > (9 MPa). For the cement layer, the non-retentive preparation (nRET) had the lowest shrinkage stress from all the groups, obtaining a more homogeneous stress distribution on the cement surface. Regarding the abutment teeth, the IST generated a higher shrinkage stress area on the dental structure, concentrating higher stress magnitude at the axiopulpar and axiogingival angles. Non-retentive preparation seems to reduce polymerization shrinkage stress. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 2021-06-25T11:10:06Z 2021-06-25T11:10:06Z |
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/10.1080/10255842.2020.1866561 Computer Methods in Biomechanics and Biomedical Engineering. 1476-8259 1025-5842 http://hdl.handle.net/11449/208312 10.1080/10255842.2020.1866561 2-s2.0-85099202399 |
url |
http://dx.doi.org/10.1080/10255842.2020.1866561 http://hdl.handle.net/11449/208312 |
identifier_str_mv |
Computer Methods in Biomechanics and Biomedical Engineering. 1476-8259 1025-5842 10.1080/10255842.2020.1866561 2-s2.0-85099202399 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Computer Methods in Biomechanics and Biomedical Engineering |
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_ |
1808128792684658688 |