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1999 Fiscal Year Final Research Report Summary

Development of Display System of Individual Mandibular Movement Based on the CT Data

Research Project

Project/Area Number 10650254
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Intelligent mechanics/Mechanical systems
Research InstitutionTokyo Institute of Technology

Principal Investigator

INOU Norio  Tokyo Institute of Technology, Graduate School of Information Science and Engineering, Associate Professor, 大学院・情報理工学研究科, 助教授 (70126308)

Co-Investigator(Kenkyū-buntansha) MAKI Koutaro  University of Showa, Department of Orthodontics, Lecturer, 歯学部, 講師 (80219295)
Project Period (FY) 1998 – 1999
KeywordsMandibular Movement / X-ray Ct / Individual Modeling / Movement of Condyle / Function of movements
Research Abstract

The purpose of this research is to grasp quantitative mandibular movement of a patient and find out useful information in the movement for diagnosis and medical treatment of masticatory diseases. It usually requires operative invasion to examine mandibular conditions around condyles, which gives a lot of physical burden to the patient. This study developed a new system to present three-dimensional movement of the human mandible in intact states. The basic principle of the display system is to draw the patient's mandibular model according to the data of mandibular movement. The mandibular and maxillary models were made by an automated modeling method of FEM using the patient's X-ray CT data. The only surface data of the models were used for drawing the images. We successfully developed the three-dimensional display system which presents animated images of three-dimensional mandibular movement from an arbitrary direction on a personal computer. To improve the display performance, OpenGL was applied. This study also examined a valid indicator which clearly showed masticatory diseases. Velocity profiles of the mandibular movement at both sides of condyles (mandibular heads) were computed using several persons' data. The velocity profiles clearly showed the states of mandibular diseases.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 伊能教夫: "固体別顎運動表示と顎運動機能の考察"顎顔面バイオメカニクス学会誌. 4. 15-16 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Norio INOU: "Three-dimensional Display System of Individual Mandibular Movement"Proceedings of the fifth Japan-USA-Singapore-China Conference on Biomechanics. 172-173 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 伊能教夫: "顎骨の固体別応力解析と三次元顎運動表示"日本機械学会第10回バイオエンジニアリング学術講演会論文集. 7-8 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 伊能教夫: "下顎骨の固体別モデリングと応力解析"日本機械学会第12回バイオエンジニアリング講演会論文集. 245-246 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N. Inou, N. Akaana, S. Ujihashi and K. Maki: "Three-Dimensional Display System of Individual Mandibular Movement and Considerations of the Motor Functions"Journal of Ormaxillofacial Biomechanics. Vol. 4, No. 1. 15-16 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Inou, N. Akaana, T. Kurami and S. Ujihashi: "Three-Dimensional Display System of Individual Mandibular Movement"Proceedings of the Fifth Japan-USA-Singapore-China Conference on Biomechanics. 172-173 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Inou, T. Mitome, S. Ujihashi S. Suzuki and K. Maki: "An Individual Stress Analysis of the Human Mandible and 3-D Display of the Movement"The 10th JSME Bioengineering Conference and Seminar. No. 99-36. 7-8 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Inou, M. Iwasaki, S. Ujihashi, S. Suzuki and K. Maki: "Individual Modeling and Stress Analysis of Human Mandible"The 12th Bioengineering Conference. No. 99-37. 245-246 (2000)

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

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Published: 2001-10-23  

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