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2004 Fiscal Year Final Research Report Summary

Patient specific individual computational mechanics for diagnosis and treatment planning of temporomandibular joint disorder

Research Project

Project/Area Number 14380402
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biomedical engineering/Biological material science
Research InstitutionOsaka University

Principal Investigator

TANAKA Masao  Osaka University, Graduate School of Engineering Science, Professor, 大学院・基礎工学研究科, 教授 (40163571)

Co-Investigator(Kenkyū-buntansha) TANAKA Eiji  Hiroshima University, Graduate School of Biomedical Science, Associate Professor, 大学院・医歯薬学総合研究科, 助教授 (40273693)
TODOH Masahiro  Hokkaido University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (10314402)
Project Period (FY) 2002 – 2004
KeywordsBiomechanics / Computational Mechanics / Individual Modeling / Temporomandibular joint
Research Abstract

Individual geometry of temporomandibular joint(TMJ) was retrieved from MR images and was used for the finite element modeling of individual patient. The condyle trajectory was determined by referring to its position at different mouth opening positions, and used for the stress analysis of soft tissue components of temporomandibular joints. The typical stress conditions in the TMJ disc and the retrodiscal connective tissue were investigated for normal TMJs and for anterior-disc-displaced TMJs. The sensitivity analysis with condyle position demonstrated that the perturbation in inferior direction at the fully-mouth-open position and the perturbation in inferior direction with small rotation at the mouth-closed position were effective for the disc reduction during the mouth opening motion of anterior-disc-displaced TMJs. The individual finite element model was extended with the frame structures for the mandible bone connected to the finite elements of condyle and for the temporal bone behind the elements of glenoid fossa. These frames were interconnected by muscles of mastication under the contacting conditions at anterior/posterior tooth, and the extended model enabled us to examine the stress condition of soft tissue components of viscoelasticity under the clenching. The parameter studies suggested us that the comparison of the results of individual finite element analysis with the results of medical imaging analysis has the potential to estimate the elastic characteristics of the soft tissue components towards the diagnosis and to probe the treatment condition of the adjustment of relative position of bony components leading the condyle trajectory for the reasonable stress condition of the soft tissue components.

  • Research Products

    (8 results)

All 2005 2004 2003

All Journal Article (8 results)

  • [Journal Article] 顎関節の個体別計算バイオメカニクスシミュレーション2005

    • Author(s)
      田中 正夫
    • Journal Title

      日本顎口腔機能学会雑誌 11-2

      Pages: 97-105

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Influence of Condyle Trajectory on Biomechanical Condition of Soft Tissue Components in Anterior-Disc-Displaced Tempromandibular Joint2005

    • Author(s)
      Masao Tanaka
    • Journal Title

      Computer Methods in Biomechanics & Biomedical Engineering 5

      Pages: S88.pdf

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Computational biomechanics simulation of temporomandibular joint based on individual finite element moderling2005

    • Author(s)
      Masao Tanaka
    • Journal Title

      Journal of Japanese Society of Stomatognathic Function 11-2

      Pages: 97-105

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Influence of condyle trajectory on biomechanical condition of soft tissue components in anterior-disc-displaced temporomandibular joint : Individual-model-based analysis2005

    • Author(s)
      Masao Tanaka, Eiji Tanaka, Takeshi Matsumoto, Masahiro Todoh, Yukiko Kuroda
    • Journal Title

      Computer Methods in Biomechanics & Biomedical Engineering 5 (J.Middleton, NG Shrive, ML Jones eds.) S88.pdf

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Three-Dimensional Finite Element Analysis of Human Temporomandibular Joint with and without Disc Dispalcement During Jaw Opening2004

    • Author(s)
      Eiji Tanaka
    • Journal Title

      Medical Engineering & Physics 26-6

      Pages: 503-511

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Three-dimensional finite element analysis of human temporomandibular joint with and without disc displacement during jaw openiong2004

    • Author(s)
      Eiji Tanaka, Rodrigo del Pozo, Masao Tanaka, Daisuke Asai, Miho Hirose, Tatsunori Iwabe, Kazuo Tanne
    • Journal Title

      Medical Engineering & Physics 26-6

      Pages: 503-511

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Stress Analysis of Anterior-Disc-Displaced Tempromandibular joint by using Individual Finite Element Model2003

    • Author(s)
      Masao Tanaka
    • Journal Title

      JSME International Journal 46

      Pages: 1400-1408

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Stress analysis of anterior-disc-displaced temporomandibular joint using individual finite element model2003

    • Author(s)
      Masao Tanaka, Eiji Tanaka, Masahiro Todoh, Daisuke Asai, Yukiko Kuroda
    • Journal Title

      JSME International Journal, Series C 44-4

      Pages: 1400-1408

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2006-07-11  

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