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1995 Fiscal Year Final Research Report Summary

Evaluation of elderly denture wearers in function by Stomatognathic Analyzing system.

Research Project

Project/Area Number 06454562
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 補綴理工系歯学
Research InstitutionTsurumi University

Principal Investigator

HOSOI Toshio  Tsurumi University School of Dental Medicine professor, 歯学部, 教授 (70064368)

Co-Investigator(Kenkyū-buntansha) NISHIMURA Katsuhiko  Tsurumi University School of Dental Medicine assistant, 歯学部, 助手 (30237721)
OHNUKI Masari  Tsurumi University School of Dental Medicine assistant, 歯学部, 助手 (20185341)
Project Period (FY) 1994 – 1995
KeywordsComplete denture / Masticatory muscular activity / Bite force / Stomatognathic Funciton / Elderly denture wearers / masticatory Efficiency / tapping movement / occluding phase
Research Abstract

In quantifying the amount of masticatory muscle activities at the occluding phase in elderly complete denture wearers, we tried to develope the measuring and analyzing system composed of electromyograph and Mandibular kinesiograph (MKG K6-I). The occluding phase was recognized under the setting positional threshold value up to 2mm vertically.
Masticatory muscular electromyogram and mandibular movement under the tapping movement could be simultaneously measured, and the amount of masticatory muscle activities in the occluding phase could be quantified from the integrated EMG.
1.The ratio of muscular activities in the occluding phase was about 70-80% of total muscle activities under the tapping movement.
2.Scatter diagrams were obtained from masticatory muscle activities and biting force in each complete denture wearers using this system.
Two curvilinear regression were elected by the power curve and quadratic curve of the scatter diagram.
The error in the value of the biting force obtained by two curvilinear regression was about 10% of actual values.
In 1995, we had been tried to develope the three-dimensional bite force device using the three load cells, and could manifactured for trial the three-dimensional bite force measurement.
1.The error of this measurement systme was within 5% by the coefficient for correction.
2.The direction and the magnitude of three-dimensional bite force could be measured during clenching at period of 2.5 sec in three elderly complete denture wearers.

  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 大道英徳ほか: "全部床義歯装着者における咬合相筋活動量の定量化への検討" 日本補綴歯科学会雑誌. 38. 1082-1092 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大貫昌理ほか: "下顎運動測定装置による高齢全部床義歯患者の顎機能診査" 老年歯科医学. 9. 73-83 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 東條敏明: "咀嚼筋筋電図から算出した力積値による義歯機能の評価" 鶴見歯学. 21. 119-131 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 細井紀雄ほか: "顎機能診断システムによる高齢義歯装着者の評価" 日本歯科医師会雑誌. 48. 141-141 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大道英徳: "全部床義歯患者におけるタッピング運動時の筋電図学的咬合力算出法" 日本補綴歯科学会雑誌. 40. 46-58 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ohmichi, H.et al: "A Measurement of the Masticatory Muscle EMG Activities at the Occluding Phase in Complete Denture Wearers" J Jpn Prosthodont Soc. 38 (5). 1082-1092 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ohnuki, M.et al: "Examination of the Stomatognathic Function in Elderly Complete Denture Wearers" J J Gerodont. 9 (2). 73-83 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tojyo, T.: "Functional Evaluation of Complete Denture from the Impulse of Calculated Biting Force using the EMG of the Masticatory Muscle" Tsurumi Univ.Dent.J.21 (1). 119-131 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ohmichi, H.: "Electromyographic Calculation of Biting Force during Tapping Movements in Complete Denture Wearers" J Jpn Prosthodont Soc. 40 (1). 46-58 (1996)

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

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Published: 1997-03-04  

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