Finite Element Analysis of a Novel Temporary External Fixator (TEF) in Mandibular Reconstruction
This research examines temporary external fixators (TEF) with four screw plate configurations following segmental mandibulectomy. A new design for a screw plate accommodating 2 to 4 bicortical screws (2.4 mm each) is proposed. Biomechanical reliability is assessed using finite element analysis (FEA)...
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Tamkang University Press
2025-03-01
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| Series: | Journal of Applied Science and Engineering |
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| Online Access: | http://jase.tku.edu.tw/articles/jase-202511-28-11-0003 |
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| author | Rungsan Chaiyachet Surasith Piyasin Weerayut Jina Teerawat Paipongna Apichart Boonma |
| author_facet | Rungsan Chaiyachet Surasith Piyasin Weerayut Jina Teerawat Paipongna Apichart Boonma |
| author_sort | Rungsan Chaiyachet |
| collection | DOAJ |
| description | This research examines temporary external fixators (TEF) with four screw plate configurations following segmental mandibulectomy. A new design for a screw plate accommodating 2 to 4 bicortical screws (2.4 mm each) is proposed. Biomechanical reliability is assessed using finite element analysis (FEA) and compared with the Schanz screws. A mandibular model was created with cortical and cancellous bones segmented by threshold method. The screw plate, designed in SolidWorks, featured a 12 mm inter-hole distance, 2.0 mm thickness, and 2.4 mm screws. Structural analysis was performed in ANSYS using literature-based mechanical
properties. A mesh convergence test with a 0.33 mm mesh size and 1,005,000 elements had a solution time of 205 seconds, with a relative error under 0.161%. Static structural behavior of the Left Unilateral Molar Clench (LMOL) was also analyzed. The 3-screw plate showed superior biomechanical performance, with maximum von Mises stress at 293.38 MPa, von Mises strain at 23.57 m/mm, and total deformation at 0.5915 mm. Topology optimization revealed that the 50% mass configuration is the most effective among the 40% to 60% mass range. This configuration achieved a 2.31% decrease in Maximum von Mises stress, and a 16.99% reduction in total
deformation. |
| format | Article |
| id | doaj-art-3d359b8ecef243d489732c8c3cebe1fc |
| institution | DOAJ |
| issn | 2708-9967 2708-9975 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Tamkang University Press |
| record_format | Article |
| series | Journal of Applied Science and Engineering |
| spelling | doaj-art-3d359b8ecef243d489732c8c3cebe1fc2025-08-20T02:51:27ZengTamkang University PressJournal of Applied Science and Engineering2708-99672708-99752025-03-0128112113212510.6180/jase.202511_28(11).0003Finite Element Analysis of a Novel Temporary External Fixator (TEF) in Mandibular ReconstructionRungsan Chaiyachet0Surasith Piyasin1Weerayut Jina2Teerawat Paipongna3Apichart Boonma4Department of Industrial Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, ThailandDepartment of Mechanical Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, ThailandDepartment of Mechanical and Manufacturing, Engineering, Faculty of Sciences and Engineering, Kasetsart University, Sakon Nakhon 47000, ThailandDental Department, Sakon Nakhon Hospital, Sakon Nakhon 47000, ThailandDepartment of Industrial Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, ThailandThis research examines temporary external fixators (TEF) with four screw plate configurations following segmental mandibulectomy. A new design for a screw plate accommodating 2 to 4 bicortical screws (2.4 mm each) is proposed. Biomechanical reliability is assessed using finite element analysis (FEA) and compared with the Schanz screws. A mandibular model was created with cortical and cancellous bones segmented by threshold method. The screw plate, designed in SolidWorks, featured a 12 mm inter-hole distance, 2.0 mm thickness, and 2.4 mm screws. Structural analysis was performed in ANSYS using literature-based mechanical properties. A mesh convergence test with a 0.33 mm mesh size and 1,005,000 elements had a solution time of 205 seconds, with a relative error under 0.161%. Static structural behavior of the Left Unilateral Molar Clench (LMOL) was also analyzed. The 3-screw plate showed superior biomechanical performance, with maximum von Mises stress at 293.38 MPa, von Mises strain at 23.57 m/mm, and total deformation at 0.5915 mm. Topology optimization revealed that the 50% mass configuration is the most effective among the 40% to 60% mass range. This configuration achieved a 2.31% decrease in Maximum von Mises stress, and a 16.99% reduction in total deformation.http://jase.tku.edu.tw/articles/jase-202511-28-11-0003finite elementbiomechanicstemporary external fixatormandibular reconstructionstructural analysis |
| spellingShingle | Rungsan Chaiyachet Surasith Piyasin Weerayut Jina Teerawat Paipongna Apichart Boonma Finite Element Analysis of a Novel Temporary External Fixator (TEF) in Mandibular Reconstruction Journal of Applied Science and Engineering finite element biomechanics temporary external fixator mandibular reconstruction structural analysis |
| title | Finite Element Analysis of a Novel Temporary External Fixator (TEF) in Mandibular Reconstruction |
| title_full | Finite Element Analysis of a Novel Temporary External Fixator (TEF) in Mandibular Reconstruction |
| title_fullStr | Finite Element Analysis of a Novel Temporary External Fixator (TEF) in Mandibular Reconstruction |
| title_full_unstemmed | Finite Element Analysis of a Novel Temporary External Fixator (TEF) in Mandibular Reconstruction |
| title_short | Finite Element Analysis of a Novel Temporary External Fixator (TEF) in Mandibular Reconstruction |
| title_sort | finite element analysis of a novel temporary external fixator tef in mandibular reconstruction |
| topic | finite element biomechanics temporary external fixator mandibular reconstruction structural analysis |
| url | http://jase.tku.edu.tw/articles/jase-202511-28-11-0003 |
| work_keys_str_mv | AT rungsanchaiyachet finiteelementanalysisofanoveltemporaryexternalfixatortefinmandibularreconstruction AT surasithpiyasin finiteelementanalysisofanoveltemporaryexternalfixatortefinmandibularreconstruction AT weerayutjina finiteelementanalysisofanoveltemporaryexternalfixatortefinmandibularreconstruction AT teerawatpaipongna finiteelementanalysisofanoveltemporaryexternalfixatortefinmandibularreconstruction AT apichartboonma finiteelementanalysisofanoveltemporaryexternalfixatortefinmandibularreconstruction |