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Preoperative evaluation of bone quality for dental implantation using an ultrasound axial transmission device

Research Project

Project/Area Number 16K20540
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Dental engineering/Regenerative dentistry
Research InstitutionHiroshima University

Principal Investigator

Shinsuke Okada  広島大学, 病院(歯), 病院助教 (20736558)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywords超音波 / cSOS / 骨質 / インプラント / sos / 術前診査 / 術前診断 / SOS
Outline of Final Research Achievements

This study investigated the clinical utility of an ultrasound axial transmission device in preoperative evaluation of bone quality for dental implantation, by clarifying the relationship between cortical bone speed of sound (cSOS), insertion torque values (ITV), and implant stability quotient (ISQ) in porcine femur bone. The mean cSOS was 3962 m/s; mean BMD and Po were 0.822 g/cm2 and 0.185%, respectively. cSOS and BMD values were positively correlated, and cSOS values and Po values were negatively correlated. Mean ITV, ISQ, and cortical bone thickness were 37.95 Ncm, 71.172, and 2.869 mm, respectively. There was a positive correlation between cSOS values and ISQ values. Furthermore, there was a positive correlation between cSOS values and ITV in the cortical bone with a thickness ranging from 3.0 to 3.5 mm.

Academic Significance and Societal Importance of the Research Achievements

歯科インプラント治療における骨組織の構造や機能は, X線CTを用いてBApの存在量を基準とした骨密度のみで評価しているのが現状であり,骨質は臨床的に評価されてない。
一方で超音波は物質の内部構造や力学的性質の評価として物性研究で用いられており, 医科で応用されている定量的超音波測定法(QUS)のパラメーターである超音波速度(SOS)が骨密度とBAp配向性の両方に規定されている可能性が明らかとなった。本研究の結果により臨床において骨質の指標であるBAp配向性を無被曝で診断することが可能となり新たなインプラント術前検査を確立することができる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (4 results)

All 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Preoperative evaluation of bone quality for dental implantation using an ultrasound axial transmission device in an ex vivo model2017

    • Author(s)
      Shinsuke Okada
    • Journal Title

      Clin Exp Dent Res.

      Volume: 3 Issue: 3 Pages: 81-86

    • DOI

      10.1002/cre2.59

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Preoperative Evaluation of Bone Quality Using an Ultrasound Device2017

    • Author(s)
      Shinsuke Okada
    • Organizer
      the 95th General Session & Exhibition of the IADR
    • Place of Presentation
      San Francisco U.S.A.
    • Year and Date
      2017-03-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Preoperative Evaluation of Bone Quality Using an Ultrasound Device2017

    • Author(s)
      Shinsuke Okada
    • Organizer
      the 95th General Session & Exhibition of the IADR, 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 皮質骨骨質評価への超音波伝播速度の応用2016

    • Author(s)
      河野聖
    • Organizer
      平成28年度(公社)日本補綴歯科学会九州支部、中国・四国支部合同学術大会
    • Place of Presentation
      熊本県歯科医師会館
    • Year and Date
      2016-09-03
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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