Dynamic three-dimensional finite element analysis of orbital trauma

Detalhes bibliográficos
Autor(a) principal: Moura, L. B. [UNESP]
Data de Publicação: 2021
Outros Autores: Jürgens, P. C., Gabrielli, M. A.C. [UNESP], Pereira Filho, V. A. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.bjoms.2020.09.021
http://hdl.handle.net/11449/221986
Resumo: This study comprises a dynamic finite element (FE) analysis of the mechanisms of orbital trauma, specifically buckling and hydraulic theories. A digital model of the orbital cavity - including the eyeball, fatty tissue, extraocular muscles, and the bone orbit – was created from magnetic resonance imaging and computed tomographic data from a real patient. An impactor hit the FE model following two scenarios: one was a hydraulic mechanism for direct impact to the eyeball and the other a buckling mechanism for direct impact over the infraorbital rim. The first principal stress was calculated to determine the stress distribution over the orbital walls. The FE model presented more than 900,000 elements and time of simulation was 4.8 milliseconds (ms) and 0.6 ms, for the hydraulic and buckling mechanisms, respectively. The stress distribution in the hydraulic mechanism affected mainly the medial wall with a high stress area of 99.08 mm2, while the buckling mechanism showed a high stress area of 378.70 mm2 in the orbital floor. The presence of soft tissue absorbed the energy, especially in the hydraulic mechanism. In conclusion, the applied method of segmentation allowed the construction of a complete orbital model. Both mechanisms presented results that were similar to classic experiments. However, the soft tissue in the hydraulic mechanism absorbed the impact, demonstrating its role in orbital pathophysiology.
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spelling Dynamic three-dimensional finite element analysis of orbital traumaFinite Element AnalysisOrbitOrbital fracturesThis study comprises a dynamic finite element (FE) analysis of the mechanisms of orbital trauma, specifically buckling and hydraulic theories. A digital model of the orbital cavity - including the eyeball, fatty tissue, extraocular muscles, and the bone orbit – was created from magnetic resonance imaging and computed tomographic data from a real patient. An impactor hit the FE model following two scenarios: one was a hydraulic mechanism for direct impact to the eyeball and the other a buckling mechanism for direct impact over the infraorbital rim. The first principal stress was calculated to determine the stress distribution over the orbital walls. The FE model presented more than 900,000 elements and time of simulation was 4.8 milliseconds (ms) and 0.6 ms, for the hydraulic and buckling mechanisms, respectively. The stress distribution in the hydraulic mechanism affected mainly the medial wall with a high stress area of 99.08 mm2, while the buckling mechanism showed a high stress area of 378.70 mm2 in the orbital floor. The presence of soft tissue absorbed the energy, especially in the hydraulic mechanism. In conclusion, the applied method of segmentation allowed the construction of a complete orbital model. Both mechanisms presented results that were similar to classic experiments. However, the soft tissue in the hydraulic mechanism absorbed the impact, demonstrating its role in orbital pathophysiology.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Catholic University of PelotasSchool of Dentistry São Paulo State University (Unesp)Department of Cranio-Maxillofacial Surgery University Hospital Basel University of BaselSchool of Dentistry São Paulo State University (Unesp)FAPESP: 2015/04521-0;FAPESP: 2016/01445-4Catholic University of PelotasUniversidade Estadual Paulista (UNESP)University of BaselMoura, L. B. [UNESP]Jürgens, P. C.Gabrielli, M. A.C. [UNESP]Pereira Filho, V. A. [UNESP]2022-04-28T19:41:40Z2022-04-28T19:41:40Z2021-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article905-911http://dx.doi.org/10.1016/j.bjoms.2020.09.021British Journal of Oral and Maxillofacial Surgery, v. 59, n. 8, p. 905-911, 2021.1532-19400266-4356http://hdl.handle.net/11449/22198610.1016/j.bjoms.2020.09.0212-s2.0-85110555307Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBritish Journal of Oral and Maxillofacial Surgeryinfo:eu-repo/semantics/openAccess2022-04-28T19:41:40Zoai:repositorio.unesp.br:11449/221986Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:35:38.506374Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Dynamic three-dimensional finite element analysis of orbital trauma
title Dynamic three-dimensional finite element analysis of orbital trauma
spellingShingle Dynamic three-dimensional finite element analysis of orbital trauma
Moura, L. B. [UNESP]
Finite Element Analysis
Orbit
Orbital fractures
title_short Dynamic three-dimensional finite element analysis of orbital trauma
title_full Dynamic three-dimensional finite element analysis of orbital trauma
title_fullStr Dynamic three-dimensional finite element analysis of orbital trauma
title_full_unstemmed Dynamic three-dimensional finite element analysis of orbital trauma
title_sort Dynamic three-dimensional finite element analysis of orbital trauma
author Moura, L. B. [UNESP]
author_facet Moura, L. B. [UNESP]
Jürgens, P. C.
Gabrielli, M. A.C. [UNESP]
Pereira Filho, V. A. [UNESP]
author_role author
author2 Jürgens, P. C.
Gabrielli, M. A.C. [UNESP]
Pereira Filho, V. A. [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Catholic University of Pelotas
Universidade Estadual Paulista (UNESP)
University of Basel
dc.contributor.author.fl_str_mv Moura, L. B. [UNESP]
Jürgens, P. C.
Gabrielli, M. A.C. [UNESP]
Pereira Filho, V. A. [UNESP]
dc.subject.por.fl_str_mv Finite Element Analysis
Orbit
Orbital fractures
topic Finite Element Analysis
Orbit
Orbital fractures
description This study comprises a dynamic finite element (FE) analysis of the mechanisms of orbital trauma, specifically buckling and hydraulic theories. A digital model of the orbital cavity - including the eyeball, fatty tissue, extraocular muscles, and the bone orbit – was created from magnetic resonance imaging and computed tomographic data from a real patient. An impactor hit the FE model following two scenarios: one was a hydraulic mechanism for direct impact to the eyeball and the other a buckling mechanism for direct impact over the infraorbital rim. The first principal stress was calculated to determine the stress distribution over the orbital walls. The FE model presented more than 900,000 elements and time of simulation was 4.8 milliseconds (ms) and 0.6 ms, for the hydraulic and buckling mechanisms, respectively. The stress distribution in the hydraulic mechanism affected mainly the medial wall with a high stress area of 99.08 mm2, while the buckling mechanism showed a high stress area of 378.70 mm2 in the orbital floor. The presence of soft tissue absorbed the energy, especially in the hydraulic mechanism. In conclusion, the applied method of segmentation allowed the construction of a complete orbital model. Both mechanisms presented results that were similar to classic experiments. However, the soft tissue in the hydraulic mechanism absorbed the impact, demonstrating its role in orbital pathophysiology.
publishDate 2021
dc.date.none.fl_str_mv 2021-10-01
2022-04-28T19:41:40Z
2022-04-28T19:41:40Z
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.bjoms.2020.09.021
British Journal of Oral and Maxillofacial Surgery, v. 59, n. 8, p. 905-911, 2021.
1532-1940
0266-4356
http://hdl.handle.net/11449/221986
10.1016/j.bjoms.2020.09.021
2-s2.0-85110555307
url http://dx.doi.org/10.1016/j.bjoms.2020.09.021
http://hdl.handle.net/11449/221986
identifier_str_mv British Journal of Oral and Maxillofacial Surgery, v. 59, n. 8, p. 905-911, 2021.
1532-1940
0266-4356
10.1016/j.bjoms.2020.09.021
2-s2.0-85110555307
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv British Journal of Oral and Maxillofacial Surgery
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 905-911
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
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