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Finite element analysis of stress distribution on reconstructed mandibular models for autogenous bone grafts.

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Title: Finite element analysis of stress distribution on reconstructed mandibular models for autogenous bone grafts.
Authors: Kucukguven, Meric Bilgic1 mericblg@gmail.com, Akkocaoğlu, Murat1
Source: Technology & Health Care. 2020, Vol. 28 Issue 3, p249-258. 10p.
Subjects: Mandible abnormalities, Stress concentration, Finite element method, Internal fixation in fractures, Tomography, Mandible surgery, Orthopedic implants, Mandible, Human anatomical models, Physiologic strain, Ilium, Fibula, Computed tomography, Bone grafting
Abstract: Background: There are several challenges in terms of mandibular reconstruction. The defect size, graft materials, and plate combinations should be taken into consideration in surgical planning.Objective: The aim of this study was to evaluate the effect of different reconstruction variations on the stress distribution of segmental resected mandibles with two different defect sizes using finite element analysis (FEA).Methods: Computerized tomography images of a human mandible, fibula, and iliac crest were used as references to build three-dimensional (3D) models on a PC. The virtual plates and screws were used to simulate reconstruction of the mandibular defects. The models were divided into two groups based on the longitudinal defect size. Different osteosynthesis variations and autogenous graft material combinations were used to reconstruct the mandibles.Results: In all models, higher von Mises stress values occurred on the mandibles reconstructed with the fibula than those with the iliac crest. Fixation of the bone grafts with a reconstruction plate for the 10-mm defects and using a mini-plate in addition to the reconstruction plate for the 30-mm defects decreased stresses on the grafted bones.Conclusions: Mandibular reconstruction with the iliac grafts is biomechanically superior to that with the fibular grafts. In addition, osteosynthesis methods and the defect size affect the stress distribution. [ABSTRACT FROM AUTHOR]
Copyright of Technology & Health Care is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Finite element analysis of stress distribution on reconstructed mandibular models for autogenous bone grafts.
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  Data: <searchLink fieldCode="AR" term="%22Kucukguven%2C+Meric+Bilgic%22">Kucukguven, Meric Bilgic</searchLink><relatesTo>1</relatesTo><i> mericblg@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Akkocaoğlu%2C+Murat%22">Akkocaoğlu, Murat</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Technology+%26+Health+Care%22">Technology & Health Care</searchLink>. 2020, Vol. 28 Issue 3, p249-258. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Mandible+abnormalities%22">Mandible abnormalities</searchLink><br /><searchLink fieldCode="DE" term="%22Stress+concentration%22">Stress concentration</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Internal+fixation+in+fractures%22">Internal fixation in fractures</searchLink><br /><searchLink fieldCode="DE" term="%22Tomography%22">Tomography</searchLink><br /><searchLink fieldCode="DE" term="%22Mandible+surgery%22">Mandible surgery</searchLink><br /><searchLink fieldCode="DE" term="%22Orthopedic+implants%22">Orthopedic implants</searchLink><br /><searchLink fieldCode="DE" term="%22Mandible%22">Mandible</searchLink><br /><searchLink fieldCode="DE" term="%22Human+anatomical+models%22">Human anatomical models</searchLink><br /><searchLink fieldCode="DE" term="%22Physiologic+strain%22">Physiologic strain</searchLink><br /><searchLink fieldCode="DE" term="%22Ilium%22">Ilium</searchLink><br /><searchLink fieldCode="DE" term="%22Fibula%22">Fibula</searchLink><br /><searchLink fieldCode="DE" term="%22Computed+tomography%22">Computed tomography</searchLink><br /><searchLink fieldCode="DE" term="%22Bone+grafting%22">Bone grafting</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: <bold>Background: </bold>There are several challenges in terms of mandibular reconstruction. The defect size, graft materials, and plate combinations should be taken into consideration in surgical planning.<bold>Objective: </bold>The aim of this study was to evaluate the effect of different reconstruction variations on the stress distribution of segmental resected mandibles with two different defect sizes using finite element analysis (FEA).<bold>Methods: </bold>Computerized tomography images of a human mandible, fibula, and iliac crest were used as references to build three-dimensional (3D) models on a PC. The virtual plates and screws were used to simulate reconstruction of the mandibular defects. The models were divided into two groups based on the longitudinal defect size. Different osteosynthesis variations and autogenous graft material combinations were used to reconstruct the mandibles.<bold>Results: </bold>In all models, higher von Mises stress values occurred on the mandibles reconstructed with the fibula than those with the iliac crest. Fixation of the bone grafts with a reconstruction plate for the 10-mm defects and using a mini-plate in addition to the reconstruction plate for the 30-mm defects decreased stresses on the grafted bones.<bold>Conclusions: </bold>Mandibular reconstruction with the iliac grafts is biomechanically superior to that with the fibular grafts. In addition, osteosynthesis methods and the defect size affect the stress distribution. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Technology & Health Care is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.3233/THC-191809
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 249
    Subjects:
      – SubjectFull: Mandible abnormalities
        Type: general
      – SubjectFull: Stress concentration
        Type: general
      – SubjectFull: Finite element method
        Type: general
      – SubjectFull: Internal fixation in fractures
        Type: general
      – SubjectFull: Tomography
        Type: general
      – SubjectFull: Mandible surgery
        Type: general
      – SubjectFull: Orthopedic implants
        Type: general
      – SubjectFull: Mandible
        Type: general
      – SubjectFull: Human anatomical models
        Type: general
      – SubjectFull: Physiologic strain
        Type: general
      – SubjectFull: Ilium
        Type: general
      – SubjectFull: Fibula
        Type: general
      – SubjectFull: Computed tomography
        Type: general
      – SubjectFull: Bone grafting
        Type: general
    Titles:
      – TitleFull: Finite element analysis of stress distribution on reconstructed mandibular models for autogenous bone grafts.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Kucukguven, Meric Bilgic
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            NameFull: Akkocaoğlu, Murat
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          Dates:
            – D: 01
              M: 05
              Text: 2020
              Type: published
              Y: 2020
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              Value: 09287329
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              Value: 28
            – Type: issue
              Value: 3
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            – TitleFull: Technology & Health Care
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