Cargando…

Finite element modeling technique for predicting mechanical behaviors on mandible bone during mastication

PURPOSE: The purpose of this study was to propose finite element (FE) modeling methods for predicting stress distributions on teeth and mandible under chewing action. MATERIALS AND METHODS: For FE model generation, CT images of skull were translated into 3D FE models, and static analysis was perform...

Descripción completa

Detalles Bibliográficos
Autores principales: Kim, Hee-Sun, Park, Jae-Yong, Kim, Na-Eun, Shin, Yeong-Soo, Park, Ji-Man, Chun, Youn-Sic
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Academy of Prosthodontics 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3517960/
https://www.ncbi.nlm.nih.gov/pubmed/23236574
http://dx.doi.org/10.4047/jap.2012.4.4.218
_version_ 1782252497697505280
author Kim, Hee-Sun
Park, Jae-Yong
Kim, Na-Eun
Shin, Yeong-Soo
Park, Ji-Man
Chun, Youn-Sic
author_facet Kim, Hee-Sun
Park, Jae-Yong
Kim, Na-Eun
Shin, Yeong-Soo
Park, Ji-Man
Chun, Youn-Sic
author_sort Kim, Hee-Sun
collection PubMed
description PURPOSE: The purpose of this study was to propose finite element (FE) modeling methods for predicting stress distributions on teeth and mandible under chewing action. MATERIALS AND METHODS: For FE model generation, CT images of skull were translated into 3D FE models, and static analysis was performed considering linear material behaviors and nonlinear geometrical effect. To find out proper boundary and loading conditions, parametric studies were performed with various areas and directions of restraints and loading. The loading directions are prescribed to be same as direction of masseter muscle, which was referred from anatomy chart and CT image. From the analysis, strain and stress distributions of teeth and mandible were obtained and compared with experimental data for model validation. RESULTS: As a result of FE analysis, the optimized boundary condition was chosen such that 8 teeth were fixed in all directions and condyloid process was fixed in all directions except for forward and backward directions. Also, fixing a part of mandible in a lateral direction, where medial pterygoid muscle was attached, gave the more proper analytical results. Loading was prescribed in a same direction as masseter muscle. The tendency of strain distributions between the teeth predicted from the proposed model were compared with experimental results and showed good agreements. CONCLUSION: This study proposes cost efficient FE modeling method for predicting stress distributions on teeth and mandible under chewing action. The proposed modeling method is validated with experimental data and can further be used to evaluate structural safety of dental prosthesis.
format Online
Article
Text
id pubmed-3517960
institution National Center for Biotechnology Information
language English
publishDate 2012
publisher The Korean Academy of Prosthodontics
record_format MEDLINE/PubMed
spelling pubmed-35179602012-12-12 Finite element modeling technique for predicting mechanical behaviors on mandible bone during mastication Kim, Hee-Sun Park, Jae-Yong Kim, Na-Eun Shin, Yeong-Soo Park, Ji-Man Chun, Youn-Sic J Adv Prosthodont Original Article PURPOSE: The purpose of this study was to propose finite element (FE) modeling methods for predicting stress distributions on teeth and mandible under chewing action. MATERIALS AND METHODS: For FE model generation, CT images of skull were translated into 3D FE models, and static analysis was performed considering linear material behaviors and nonlinear geometrical effect. To find out proper boundary and loading conditions, parametric studies were performed with various areas and directions of restraints and loading. The loading directions are prescribed to be same as direction of masseter muscle, which was referred from anatomy chart and CT image. From the analysis, strain and stress distributions of teeth and mandible were obtained and compared with experimental data for model validation. RESULTS: As a result of FE analysis, the optimized boundary condition was chosen such that 8 teeth were fixed in all directions and condyloid process was fixed in all directions except for forward and backward directions. Also, fixing a part of mandible in a lateral direction, where medial pterygoid muscle was attached, gave the more proper analytical results. Loading was prescribed in a same direction as masseter muscle. The tendency of strain distributions between the teeth predicted from the proposed model were compared with experimental results and showed good agreements. CONCLUSION: This study proposes cost efficient FE modeling method for predicting stress distributions on teeth and mandible under chewing action. The proposed modeling method is validated with experimental data and can further be used to evaluate structural safety of dental prosthesis. The Korean Academy of Prosthodontics 2012-11 2012-11-29 /pmc/articles/PMC3517960/ /pubmed/23236574 http://dx.doi.org/10.4047/jap.2012.4.4.218 Text en © 2012 The Korean Academy of Prosthodontics http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Kim, Hee-Sun
Park, Jae-Yong
Kim, Na-Eun
Shin, Yeong-Soo
Park, Ji-Man
Chun, Youn-Sic
Finite element modeling technique for predicting mechanical behaviors on mandible bone during mastication
title Finite element modeling technique for predicting mechanical behaviors on mandible bone during mastication
title_full Finite element modeling technique for predicting mechanical behaviors on mandible bone during mastication
title_fullStr Finite element modeling technique for predicting mechanical behaviors on mandible bone during mastication
title_full_unstemmed Finite element modeling technique for predicting mechanical behaviors on mandible bone during mastication
title_short Finite element modeling technique for predicting mechanical behaviors on mandible bone during mastication
title_sort finite element modeling technique for predicting mechanical behaviors on mandible bone during mastication
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3517960/
https://www.ncbi.nlm.nih.gov/pubmed/23236574
http://dx.doi.org/10.4047/jap.2012.4.4.218
work_keys_str_mv AT kimheesun finiteelementmodelingtechniqueforpredictingmechanicalbehaviorsonmandibleboneduringmastication
AT parkjaeyong finiteelementmodelingtechniqueforpredictingmechanicalbehaviorsonmandibleboneduringmastication
AT kimnaeun finiteelementmodelingtechniqueforpredictingmechanicalbehaviorsonmandibleboneduringmastication
AT shinyeongsoo finiteelementmodelingtechniqueforpredictingmechanicalbehaviorsonmandibleboneduringmastication
AT parkjiman finiteelementmodelingtechniqueforpredictingmechanicalbehaviorsonmandibleboneduringmastication
AT chunyounsic finiteelementmodelingtechniqueforpredictingmechanicalbehaviorsonmandibleboneduringmastication