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Clinical analysis of alveolar bone resorption in relation to pressure distribution of denture foundation in elderly edentulous patients

Research Project

Project/Area Number 02670865
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

SHIMOYAMA Kazuhiro  Tokyo Med. and Dent. Univ., Faculty of Dent., lecturer, 歯学部, 講師 (30171010)

Co-Investigator(Kenkyū-buntansha) NAGAO Masanori  Tokyo Med. and Dent. Univ., Faculty of Dent., professor, 歯学部, 教授 (60014213)
Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1992: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1991: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1990: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsSeating pressure / Impression pressure / Impression material / Edentulous jaw / Compressibility of denture foundation / Complete denture / Manual pressure / トレ-圧接力 / 手指力 / トレ-移動量
Research Abstract

The viscoelastic character of the denture foundation is different in each individual or site. The character of the mucosa and the appropriate impression procedure should be examined. However, few investigations concerning the relation between the compressibility of the denture foundation and the impression pressure have been reported.
The purpose of this study was to discuss the objective evaluation of the denture foundation in relation to the impression pressure.
In this report, the local compressibility of the denture foundation of 20 upper edentulous patients was measured with the 20 MHz B-Mode ultrasonic diagnostic equipment. The Compressible Index was defined to analyze the compressibility of the denture foundation quantitatively as against the impression pressure.
The main results were as follows :
1. The compressible amount of the denture foundation against 100 gw/cm^2 pressurization was an average of 0.32-0.61mm.
2. The compressible rate of the denture foundation against 100 gw/cm^2 pressurization was an average of 13.5-20.7%.
3. The Compressible Index was confirmed to represent the compressibility of the denture foundation accurately as against the impression pressure.
4. It was suggested that the Compressible Index was useful for the clinical simple evaluation of the denture foundation.

Report

(4 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] 小田切 一浩: "義歯床支持組織の局所的被圧変位性に関する研究" 口腔病学会雑誌. 59. 26-42 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kazuhiro Odagiri: "Local copressibility of denture foundation -Evaluation of denture foundation in relation to impression pressure-" The Journal of The Stomatological Society. 59. 26-42 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 小田清 一浩: "義歯床支持組織の局所的被圧変位性に関する研究" 口腔病学会雑誌. 59. 26-42 (1992)

    • Related Report
      1991 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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