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Study of Denture Foundation with B-mode Ultrasonic Equipment - Development Measuring System for Occlusal Load and Thickness of Denture Foundation -

Research Project

Project/Area Number 01571059
Research Category

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

Allocation TypeSingle-year Grants
Research Field 補綴理工系歯学
Research InstitutionTokyo Medical and Dental University

Principal Investigator

KOBAYASHI Ken'ichi  Tokyo Med. and Dent. Univ., Faculty of Dentistry, Lecturer, 歯学部, 講師 (00170316)

Co-Investigator(Kenkyū-buntansha) KATOH Tsuguhisa  Tokyo Med. and Dent. Univ., Faculty of Dentistry, Research Associate, 歯学部, 助手 (70095107)
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1990: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1989: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsComplete Denture / Ultrasonic Diagnosis / Image Processing / B-mode / Occlusal Force
Research Abstract

The purpose of this study was to develop the image processing system, which allows to measure the thickness of the denture foundation and the occlusal force. Using this system, we investigated the compressibility of the denture foundation and to determine the amount of relief in thickness over the specific area.
In this report, the mucosal thickness of 60 complete denture wearers were measured with 20 MHz B-Mode Ultrasonic Diagnostic Equipment, under both non occlusal load and maximum occlusal force. Moreover, the mucosal thickness of 15 complete denture wearers whose dentures were relieved by 0.25, 0.50, 0.75, 1.00mm over the areas of incisive papilla, torus palatinus and median palatine suture were also measured by the same manner.
The main results were as follows :
1. The thickness of the denture foundation could be measured at the accuracy of 0.1mm in the system.
2. Decrease in the mucosal thickness under maximum occlusal force was about 0.3mm in averages.
3. Decreasing rate in the mucosal thickness under maximum occlsal force was greater in a mandible than in a maxilla.
4. Judging from the decrease in the mucosal thickness by relief procedures, it was found that 0.50mm relief in thickness was necessary in a case of severe torus palatinus and 0.20-0.50mm relief in a moderate one.
5. Even in a case without the existence of torus palatinus, about 0.25mm relief in thickness was desirable over the incisive papilla and median palatine suture areas.

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] H.Uchida, K.Kobayashi and M.Nagao: "Thickness Measurement of Masticatory of Masticatory Mucosa with BーMode Ultrasonic Equipment." J dent Res. 68. 677 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 石鍋 聡 小林 賢一 内田 博之 長尾 正憲: "義歯床支持粘膜の荷重による厚さの変化に関する研究" 日本補綴歯科学会雑誌. 33. 31 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 石鍋 聡: "荷重時における義歯床下粘膜の厚さの変化に関する研究" 日本補綴歯科学会雑誌. 35. 111-124 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] H. Uchida, K. Kobayashi and M. Nagao: "Thickness Measurement of Masticatory of Masticatory Mucosa with B-Mode Ultrasonic Equipment" J dent Res. 68. 677 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] S. Ishinabe, K. Kobayashi, H. Uchida and M. Nagao: "Changes of the Mucosal Thickness beneath the Denture by Occlusal Load" J Jpn Prosthodont Soc.33. 31 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] S. Ishinabe: "Mucosal Thickness of the Denture Foundation under Occlusal Force" J Jpn Prosthodont Soc.35. 111-124 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] H.Uchida,K.Kobayashi and M.Nagao: "Thickness Measurement of Masticatory of Masticatory Mucosa with BーMode Ultrasonic Equipment." J dent Res. 68. 677 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 石鍋 聡,小林 賢一,内田 博之,長尾 正憲: "義歯床支持粘膜の荷重による厚さの変化に関する研究" 日本補綴歯科学会雑誌. 33. 31 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 石鍋 聡: "荷重時における義歯床下粘膜の厚さの変化に関する研究" 日本補綴歯科学会雑誌. 35. 111-124 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 石鍋聡,小林賢一,内田博之,長尾正憲: "義歯床支持粘膜の荷重による厚さの変化に関する研究" 日本補綴歯科学会雑誌. 33. 31 (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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