Periodontal ligament influence on the stress distribution in a removable partial denture supported by implant: a finite element analysis
OBJECTIVES: The non-homogenous aspect of periodontal ligament (PDL) has been examined using finite element analysis (FEA) to better simulate PDL behavior. The aim of this study was to assess, by 2-D FEA, the influence of non-homogenous PDL on the stress distribution when the free-end saddle removabl...
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| Format: | Article |
| Language: | English |
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University of São Paulo
2012-06-01
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| Series: | Journal of Applied Oral Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572012000300012 |
| _version_ | 1819130045279502336 |
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| author | Carlos Marcelo Archangelo Eduardo Passos Rocha João Antônio Pereira Manoel Martin Junior Rodolfo Bruniera Anchieta Amilcar Chagas Freitas Júnior |
| author_facet | Carlos Marcelo Archangelo Eduardo Passos Rocha João Antônio Pereira Manoel Martin Junior Rodolfo Bruniera Anchieta Amilcar Chagas Freitas Júnior |
| author_sort | Carlos Marcelo Archangelo |
| collection | DOAJ |
| description | OBJECTIVES: The non-homogenous aspect of periodontal ligament (PDL) has been examined using finite element analysis (FEA) to better simulate PDL behavior. The aim of this study was to assess, by 2-D FEA, the influence of non-homogenous PDL on the stress distribution when the free-end saddle removable partial denture (RPD) is partially supported by an osseointegrated implant. MATERIAL AND METHODS: Six finite element (FE) models of a partially edentulous mandible were created to represent two types of PDL (non-homogenous and homogenous) and two types of RPD (conventional RPD, supported by tooth and fibromucosa; and modified RPD, supported by tooth and implant [10.00x3.75 mm]). Two additional Fe models without RPD were used as control models. The non-homogenous PDL was modeled using beam elements to simulate the crest, horizontal, oblique and apical fibers. The load (50 N) was applied in each cusp simultaneously. Regarding boundary conditions the border of alveolar ridge was fixed along the x axis. The FE software (Ansys 10.0) was used to compute the stress fields, and the von Mises stress criterion (svM) was applied to analyze the results. RESULTS: The peak of svM in non-homogenous PDL was higher than that for the homogenous condition. The benefits of implants were enhanced for the non-homogenous PDL condition, with drastic svM reduction on the posterior half of the alveolar ridge. The implant did not reduce the stress on the support tooth for both PDL conditions. Conclusion: The PDL modeled in the non-homogeneous form increased the benefits of the osseointegrated implant in comparison with the homogeneous condition. Using the non-homogenous PDL, the presence of osseointegrated implant did not reduce the stress on the supporting tooth. |
| first_indexed | 2024-12-22T08:53:22Z |
| format | Article |
| id | doaj.art-029a696d17a34fb8b9a461af475d225e |
| institution | Directory Open Access Journal |
| issn | 1678-7757 1678-7765 |
| language | English |
| last_indexed | 2024-12-22T08:53:22Z |
| publishDate | 2012-06-01 |
| publisher | University of São Paulo |
| record_format | Article |
| series | Journal of Applied Oral Science |
| spelling | doaj.art-029a696d17a34fb8b9a461af475d225e2022-12-21T18:31:55ZengUniversity of São PauloJournal of Applied Oral Science1678-77571678-77652012-06-0120336236810.1590/S1678-77572012000300012Periodontal ligament influence on the stress distribution in a removable partial denture supported by implant: a finite element analysisCarlos Marcelo ArchangeloEduardo Passos RochaJoão Antônio PereiraManoel Martin JuniorRodolfo Bruniera AnchietaAmilcar Chagas Freitas JúniorOBJECTIVES: The non-homogenous aspect of periodontal ligament (PDL) has been examined using finite element analysis (FEA) to better simulate PDL behavior. The aim of this study was to assess, by 2-D FEA, the influence of non-homogenous PDL on the stress distribution when the free-end saddle removable partial denture (RPD) is partially supported by an osseointegrated implant. MATERIAL AND METHODS: Six finite element (FE) models of a partially edentulous mandible were created to represent two types of PDL (non-homogenous and homogenous) and two types of RPD (conventional RPD, supported by tooth and fibromucosa; and modified RPD, supported by tooth and implant [10.00x3.75 mm]). Two additional Fe models without RPD were used as control models. The non-homogenous PDL was modeled using beam elements to simulate the crest, horizontal, oblique and apical fibers. The load (50 N) was applied in each cusp simultaneously. Regarding boundary conditions the border of alveolar ridge was fixed along the x axis. The FE software (Ansys 10.0) was used to compute the stress fields, and the von Mises stress criterion (svM) was applied to analyze the results. RESULTS: The peak of svM in non-homogenous PDL was higher than that for the homogenous condition. The benefits of implants were enhanced for the non-homogenous PDL condition, with drastic svM reduction on the posterior half of the alveolar ridge. The implant did not reduce the stress on the support tooth for both PDL conditions. Conclusion: The PDL modeled in the non-homogeneous form increased the benefits of the osseointegrated implant in comparison with the homogeneous condition. Using the non-homogenous PDL, the presence of osseointegrated implant did not reduce the stress on the supporting tooth.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572012000300012Removable partial dentureDental implantFinite element analysisPeriodontal ligament |
| spellingShingle | Carlos Marcelo Archangelo Eduardo Passos Rocha João Antônio Pereira Manoel Martin Junior Rodolfo Bruniera Anchieta Amilcar Chagas Freitas Júnior Periodontal ligament influence on the stress distribution in a removable partial denture supported by implant: a finite element analysis Journal of Applied Oral Science Removable partial denture Dental implant Finite element analysis Periodontal ligament |
| title | Periodontal ligament influence on the stress distribution in a removable partial denture supported by implant: a finite element analysis |
| title_full | Periodontal ligament influence on the stress distribution in a removable partial denture supported by implant: a finite element analysis |
| title_fullStr | Periodontal ligament influence on the stress distribution in a removable partial denture supported by implant: a finite element analysis |
| title_full_unstemmed | Periodontal ligament influence on the stress distribution in a removable partial denture supported by implant: a finite element analysis |
| title_short | Periodontal ligament influence on the stress distribution in a removable partial denture supported by implant: a finite element analysis |
| title_sort | periodontal ligament influence on the stress distribution in a removable partial denture supported by implant a finite element analysis |
| topic | Removable partial denture Dental implant Finite element analysis Periodontal ligament |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572012000300012 |
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