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Development of Diagnosing system using TMJ sounds

Research Project

Project/Area Number 08557116
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Surgical dentistry
Research InstitutionShowa University

Principal Investigator

MICHI Ken-ichi  Showa University, School of Dentistry, Professor, 歯学部, 教授 (40013891)

Co-Investigator(Kenkyū-buntansha) MICHIWAKI Yukihiro  Showa University, School of Dentistry, Lecturer, 歯学部, 講師 (40157540)
SANO Tsukasa  Showa University, School of Dentistry, Lecturer, 歯学部, 講師 (40241038)
TAKAHASHI Koji  Showa University, School of Dentistry, Lecturer, 歯学部, 講師 (40197140)
松田 千春  昭和大学, 歯学部, 助手 (90229485)
Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1998: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1997: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsTMJ disorders / TMJ sound / Jaw movement / Acoustic Analysis / Analysis of Jaw movement / 音響学的特徴 / 客観的評価
Research Abstract

Abstract : This study was done to establish the methodology for analyzing synchronously the acoustic signals of temporomandibular joint sound with the jaw movement. The analyzing system consisted of the computerized acoustic analyzer and Sirognathograph analyzing system.
Eight asymptmatic adults were served as the subjects. Three detecting methods for acquiring temporomandibular joint sounds using an electret condenser microphone were evaluated. Three types of detecting method were as follows.
Method 1 : An electret condenser microphone was fixed in the external auditory canal using adhesive tapes. The external auditory canal was partially open in this method.
Method 2 : An electret condenser microphone was fixed in the external auditory canal using impression material. The external auditory canal was tightly closed in this method.
Method 3 : An electret condenser microphone was fixed using impression material with an air vent tube. The external auditory canal was tightly closed but keeping air vent in this method. Method 3 was evaluated to be the most suitable method for detecting the temporomandibular joint sounds because this method showed the greatest signal to noise ratio.
Using this method, the acoustic characteristics of the temporomandibular joint sounds were evaluated.
The results were as follows.
Coefficient variance of the duration between the beginning of jaw movement and the point of the maximal amplitude of temporomandibular joint sound was smaller than that between the beginning of the jaw movement and the beginning point of the temporomandibular sound in both closing and opening phases of jaw movement. In the one octave band analyses, the frequency bands with the maximal magnitude were different among the subjects.
However, the frequency bands with the maximal magnitude were nearly constant in both closing and opening phases of jaw movement in each subject.

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 増田小枝子・高橋浩二他: "顎関節雑音と顎運動の同期解析システムの開発" 昭和歯学会雑誌. 18巻2号. 183-198 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 山本実佳、佐野司他: "下顎頭のintracapsular fractureの画像所見" 歯科放射線学会誌. 38巻. 42-43 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sano T, Widmalm, Setal: "Amplitude and frequency spectrom of TMT sounds" J.of Oral rehabilitation. 26. 145-150 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 山鹿高義、高橋浩二他: "顎関節雑音の聴覚心理計測と音響学的評価" 昭歯誌. 16. 82-95 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sano T, Yamaga T, Takahashi K et al: "Aralysis of acoustic draracte ristics and MR image for TMT with arepitus" IADMER ICMI'97-Advances in Maxillotacial Imaging. 171-178 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Takayoshi Yamaga, Koji Takahashi, Tsukasa Sano Ken-ichi Michi: "Auditory Psychological Measurements and Acaostic Evaluation of TMJ sounds" J.Showa Univ.Dent.Soc.Vol 16 (2). 82-95 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Tsukasa Sano, Mika Yamamoto, Takayoshi Yamaga Koji Takahashi, Saeko Masuda, Atsuko Tagaya Ken-ichi Michi, Tomohiro Okano: "MR findings of TMJ with Crepitus" J.Japanese Dental Radiology. Vol 37 (1). 23-28 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Tsukasa Sano et al.: "Analysis of acoustic characteristics and MR imge for TMJ with crepitus accompanied by pain" IADMFR/CMI'97 Advances in Maxillofacial Imaging. 171-178 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Saeko Masuda et al.: ""Development of a New Method for Synchronously Analyzing the Acoustic characteristics of the TMJ sounds with the Measurements of JAW movement"" J.Showa.Univ.Dent.Soc.Vol 18 (2). 183-198 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 増田小枝子、高橋浩二ほか: "顎関節雑音と顎運動の同期解析システムの開発" 昭和歯学会雑誌. 18巻2号. 183-198 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 山本実佳、佐野司ほか: "下顎頭のintracapsular fractureの画像所見" 歯科放射線学会誌. 38巻. 42-43 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 佐野司 他: "Crepitusを伴った顎関節のMR画像所見" 歯科放射線学会雑誌. 37(1). 23-28 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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