• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Morphological mismatch of denture bearing mucosa recorded by optical impression in comparison with the conventional impression

Research Project

Project/Area Number 17K11741
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Prosthodontics/ Dental materials science and
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Ryunosuke Kazama  東京医科歯科大学, 歯学部, 非常勤講師 (50387429)

Co-Investigator(Kenkyū-buntansha) 若林 則幸  東京医科歯科大学, 大学院医歯学総合研究科, 教授 (00270918)
新井 祐貴  東京医科歯科大学, 大学院医歯学総合研究科, 助教 (70778654)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords有床義歯 / 光学印象 / デジタルデンティストリー / 歯学 / 有床義歯学 / 粘膜厚さ / 口腔内スキャナー / 補綴・理工系歯学
Outline of Final Research Achievements

In order to promote digitalization in the fabrication of dentures, it is necessary to clarify the difference between the shape of the alveolar ridge taken by optical impression and conventional impression. Therefore, our purposes were to clarify the accuracy of the optical impression of the alveolar ridge in the missing teeth model and the actual deviation between the conventional impression and the optical impression. As the result of the deviation analysis of the distal extension missing of the mandibular jaw, the deviation in the overlay image was recognized depending on bilateral/unilateral distal extension missing and the number of missing teeth. Therefore, it was suggested that the optical impression method is influenced by the position of the defect and the number of missing teeth compared with the conventional impression method.

Academic Significance and Societal Importance of the Research Achievements

日本における欠損歯数は減少傾向にあるものの,高齢者の欠損補綴に有床義歯を選択することは多い.材料の削減や印象材の不快感誤嚥・誤飲を回避するためにも光学印象法は大きなメリットを有し,近年急速に進展してきている.一方で,有床義歯への使用にはまだまだ課題が多い.本研究成果により,顎堤粘膜部における光学印象採得の知見が得られたことで今後の有床義歯への光学印象の臨床応用が進展すると考えられる.

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (4 results)

All 2020 2018 2017

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

  • [Journal Article] Accuracy of cone beam computed tomography in evaluation of palatal mucosa thickness.2020

    • Author(s)
      Ogawa M, Katagiri S, Koyanagi T, Maekawa S, Shiba T, Ohsugi Y, Takeuchi Y, Ikawa T, Takeuchi S, Sekiuchi T, Arai Y, Kazama R, Wakabayashi N, Izumi Y, Iwata T.
    • Journal Title

      J Clin Periodontol.

      Volume: 4 Issue: 4 Pages: 479-488

    • DOI

      10.1111/jcpe.13254

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Trueness and precision of digital impressions obtained using an intraoral scanner with different head size in the partially edentulous mandible2018

    • Author(s)
      Hayama Hironari、Fueki Kenji、Wadachi Juro、Wakabayashi Noriyuki
    • Journal Title

      Journal of Prosthodontic Research

      Volume: 62 Issue: 3 Pages: 347-352

    • DOI

      10.1016/j.jpor.2018.01.003

    • NAID

      130007458284

    • ISSN
      1883-1958, 1883-9207
    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 歯科用エックス線CT装置(CBCT)を応用した口蓋粘膜厚径の計測2018

    • Author(s)
      小川 実穂, 片桐 さやか, 竹内 康雄, 小柳 達郎, 井川 貴博, 竹内 祥吾, 関内 孝侑, 新井 祐貴, 風間 龍之輔, 若林 則幸, 和泉 雄一
    • Organizer
      日本歯周病学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 口腔内スキャナを用いた下顎部分歯列欠損模型における光学印象の真度2017

    • Author(s)
      葉山 博工, 笛木 賢治, 和達 重郎, 若林 則幸
    • Organizer
      日本補綴歯科学会東京支部総会・学術大会
    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi