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Bone resorption effected by denture use and osteporosis

Research Project

Project/Area Number 09671985
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 補綴理工系歯学
Research InstitutionTokyo Medical and Dental University

Principal Investigator

KOBAYASHI Ken'ichi  TMDU,Geriatric Dentistry, Full Time Lecturer, 歯学部, 講師 (00170316)

Co-Investigator(Kenkyū-buntansha) KATOH Tsuguhisa  TMUHS,Radiologic Science, Associate Professor, 放射線学科, 助教授 (70095107)
SEKITA Toshiaki  TMDU,Geriatric Dentistry, Assistant Professor, 歯学部, 助手 (90236092)
MINAKUCHI Shunsuke  TMDU,Geriatric Dentistry, Assistant Professor, 歯学部, 助手 (30219688)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1998: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1997: ¥2,400,000 (Direct Cost: ¥2,400,000)
Keywordsmandibular / bone mineral density / Computed Radiography
Research Abstract

This study developed bone mineral density (BMD) measuring system with computed radiography (CR) and examined BMD distribution in edentulous mandible with this system.
The results are as followings :
1. Measuring system for BMD using computed radiography
(1) The accuracy was l.4% (relative error) and the reproducibility was l.l%(CV).
(2) The new method that divides mandible into small portions allows the exact measurement at the precise position in the mandible.
2. Distribution of BMD in edentulous mandible
BMI of cortical bone in lingual and inferior border side decreased from incisor to molar region, however, BMD in labial or buccal side increased.
BMD of cancellous bone in lingual and inferior border side decreased from incisor to premolar to molar region.
However BMD in labial and buccal side showed no changes.
In anterior cancellous region, BMD in inferior border side significantly showed higher than in alveolar side (p<O.OO1).
In molar cancellous region, BMD in buccal side was significantly higher than in lingual side(p<O.OO1). In cancellous and cortical bone, BMD at the mylohyoid ridge was significantly higher than the surrounding areas (p<O.OOl).
The great individual varoination was found ; in cortical region-near mental foramen and at alveolar crest in molar region, in cancellous region-at the lingual and the inferior border in anterior region and at the labial side 6mm anterior to the mental foramen.
The conclusions are as followings :
(1) BMD seems to change in accordance with places of the muscle attachment and with the route of mandibular canal.
(2) The stability of implants can be best obtained by deep placement of the fixture between the mental foramina in anterior region and placement into buccal cancellous bone in molar region.
(3) BMD at alveolar crest in molar region may be useful for detecting changes from denture condition.
(4) The 3-D distribution of BMD in edentulous mandible may be useful for osteoporosis screening.

Report

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

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 高田 清治: "無歯顎下顎骨の骨ミネラル分布 -Compoted Radiography(CR)を用いた骨ミネラル量計測システムの開発-" 口腔病学会雑誌. 第65巻 第1号. 112-124 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Takaoka,S.,Kobayashi,K.,Katoh,T.,Minakuchi,S.,Sekita,T.,Nagai,M.and Sasaki,T.: "Distribution of Bone Mineral Density in Edentolous Mandible -A Measuring System of BMD Using Compoted Radiography-" International Archires of Photogrammetry and Remote Sensing 32/5W4. 471-476 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 高岡清治・小林賢一: "最近の歯学 2.高齢者歯科 Compoted Radiography による無歯顎下顎骨の骨ミネラル分布" 口腔病学会雑誌. 第65巻 第3号. 350 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Takaoka.S.: "Bone Mineral Density (BMD) Distribution in Edenrulous Mandible -A Measuring System for Bone Mineral Content with Computed Radiography (CR)-" The Journal of The Stomatological Society, Japan. 65,1. 112-124 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Takaoka, S., Kobayashi, K., Katoh, T., Minakuchi, S., Sekita, T., Nagao, M.and Sasaki, T.: "Distribution of Bone Mineral Density Edentulous Mandible -A Measuring System of BMD Using Computed Radiography-" International Archives of Photogramtry and Remote Sensing. 32/5w4. 471-476 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Takaoka, S.and Kobayashi, K.: "BMD Distribution in Edentulous Mandible with Computed" Radiography. 65,3. 350 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 高岡 清治: "無歯顎下顎骨の骨ミネラル分布-Computed Radiography(CR)を用いた骨ミネラル量計測システムの開発-" 口腔病学会雑誌. 第65巻 第1号. 112-124 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Takaoka, S. , Kobayashi, K. , Katoh, T. , Minakuchi, S. , Sekita, T. , Nagai, M. and Sasaki T.: "Distribution of Bone Mineral Density in Edentolous Mandible-A Measuring System of BMD Using Computed Radiography-" International Archives of Photogramnefry and Remote Sensing 32/5W4. -. 471-476 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 高岡清治・小林賢一: "最近の歯学 2. 高齢者歯科, Compoted Radiographyによる無菌顎下顎骨の骨ミネラル分布" 口腔病学会雑誌. 第65巻 第3号. 350- (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 高岡清治: "無歯顎下顎骨の骨ミネラル分布-Compited Radiography(CR)を用いた骨ミネラル量計測システムの開発-" 口腔病学会雑誌. 第65巻第1号. (1998)

    • Related Report
      1997 Annual Research Report

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

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