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Mandibular condyle bone mineral density measurement by quantitative computed tomography

Research Project

Project/Area Number 09671928
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 病態科学系歯学(含放射線系歯学)
Research InstitutionNagasaki University

Principal Investigator

NAKAMURA Takashi  Nagasaki University, School of Dentistry, Prof., 歯学部, 教授 (30172406)

Co-Investigator(Kenkyū-buntansha) SUMI Misa  Nagasaki University, School of Dentistry, Instructor, 歯学部, 助手 (90284702)
SUMI Tadateru  Nagasaki University, School of Dentistry, Instructor, 歯学部, 助手 (80284701)
IZUMI Masahiro  Nagasaki University, School of Dentistry, Assist.Prof., 歯学部附属病院, 講師 (40212956)
YONETSU Kouichi  Nagasaki University, School of Dentistry, Assoc.Prof., 歯学部, 助教授 (70167039)
佛坂 由可  長崎大学, 歯学部, 助手 (10244089)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1998: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1997: ¥2,000,000 (Direct Cost: ¥2,000,000)
Keywordsmandibular condyle / bone mineral density / quantitative computed tomography / spine / age / gender / 骨髄 / MRI / 下顎骨 / 咬合力 / ホルモン
Research Abstract

We conducted volunteer studies to asses age-related changes of mandibular condyle bone mineral density (BMD) and its correlation to the spinal BMD.Quantitative computed tomography was performed on the condyles and spines (L1-3) of 210 healthy subjects (114 men and 96 women, aged 5-85 years). A separate study was performed on 73 young student subjects (39 men and 34 women, aged 23-25 years). The mandibular condyle BMD showed a decrement rate similar to spinal BMD in men, but in women the decrement rate similar to spinal BMD in men, but in women the decrement rate of the mandibular condyle BMD was lower than that of the LI-3 BMD.On the other hand, correlation coefficients in BMD between the mandibular condyle and spine were similar in women and men. Gender-refated differences were found to be dramatic when assessed in the young student group ; the mandibular condyle and spinal BMDs were highly correlated in women (r = 0.82, p < 0.0001), but no correlation was found in men (r = 0.22). Taken together, these results suggest that the same regulatory mechanisms exist in the mandibular condyle and spine BMDs. However, aside from the spine BMD, additional undefined factor(s), including mechanical stress from the occlusion, may be involved in maintaining mandibular BMD.

Report

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

    (18 results)

All Other

All Publications (18 results)

  • [Publications] T.Nakamura,他3名: "Mandibular condyle BMD measurement by quantitative CT:A gender-related difference in correlation to the spinal BMD" Bone. 21. 441-445 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Nakamura,他6名: "Discrimination of spinal fracture with various bone mineral measurements" Calcif Tissue Int. 60. 11-15 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Nakamura,他5名: "Relationship of spinal fracture to bone density,textural,and anthropometric parameters" Calcif Tissue Int. 60. 240-243 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Nakamura,他7名: "Spinal trabecular bone loss and fracture in American and Japanese women" Calcif Tissue Int. 61. 123-128 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Nakamura, et al: "Mandibular condyle BMD measurement by quantitative CT : A gender-related difference in correlation to the spinal BMD" Bone. 21. 441-445 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Nakamura, et al: "Discrimination of spinal fracture with various bone mineral measurements." Calcif Tissue Int. 60. 11-15 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Nakamura, et al: "Relationship of spinal fracture to bone density, textural, and anthropometric parameters." Calcif Tissue Int. 60. 240-243 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Nakamura, et al: "Spinal trabecular bone loss and fracture in American and Japanese women." Calcif Tissue Int. 61. 123-128 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Nakamura,他3名: "Mandibular condyle BMD measurement by quantitative CT:A genderrelated difference in correlation to the spinal BMD" Bone. 21. 441-445 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Nakamura, 他6名: "Discrimination of spinal fracture with various bone mineral measurements" Calcif Tissue Int. 60. 11-15 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Nakamura, 他5名: "Relationship of spinal fracture to bone density,textural,and anthropometric parameters" Calcif Tissue Int. 60. 240-243 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Nakamura, 他7名: "Spinal trabecular bone loss and fracture in American and Japanese women" Calcif Tissue Int. 61. 128-128 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Nakamura, 他6名: "Discrimination of spinal fracture with various bone mineral measurements." Calcif Tissue Int. 60. 11-15 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Nakamura, 他4名: "Premature fat deposition in salivary glands affected by Sjogren's syndrome : Evidence by MR and CT" AJNR. 18. 951-958 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Nakamura, 他8名: "A remote conference system for image diagnosis on the World-Wide-Web" AJR. 169. 627-629 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Nakamura, 他2名: "CT of ameloblastic fibroodontoma" AJR. 169. 599 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Nakamura, 他3名: "Mandibular condyle BMD measurement by quantitative CT : A gender-related difference in correlation to the spinal BMD" Bone. 30. 441-445 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Nakamura, 他2名: "Deep face infections of odontogenic origin : CT assessment of pathways of space involvement." AJNR. 19. 123-128 (1998)

    • Related Report
      1997 Annual Research Report

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

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