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Analysis of objective indexes of masticatory and swallowing ability that affect the dynamics of ingesting nursing care foods

Research Project

Project/Area Number 20K18631
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionNiigata University

Principal Investigator

Murakami Kazuhiro  新潟大学, 医歯学系, 助教 (60804490)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords高齢者歯科 / 摂食嚥下 / 食品工学 / 顎口腔機能学
Outline of Research at the Start

近年,高齢化に伴い食品の安全性に対するニーズは高まっている.摂食嚥下(噛む,飲み込む)に問題のある高齢者への安全な食事の提供は必要不可欠であるが,食事の提供基準は医療者や介助者の主観的な経験と試行錯誤に大きく依存しており,客観的指標がない.そこで,健康な高齢者を対象として,噛む力や舌の力などを測定し,5種類の硬さの食品を摂取してもらい,食べやすさや飲み込みやすさを客観的に評価することを計画している.測定によって得られる生体データから,どれくらいの口の機能を持つ人がどのような食品が食べやすいかという関係性を明らかにする予定である.

Outline of Final Research Achievements

The purpose of this study is to clarify the effects of oral functions and mechanical properties of foods on bioinstrumentation data during food ingestion. Tongue pressure, the contact pressure that tongue compresses against the hard palate) and peri-oral muscles were measured during food ingestion in a total of 44 healthy young and healthy elderly participants. As a result, we found that the maximum tongue pressure (the tongue pressure which is generated by the maximum effort; one of the oral functions) of the participants was related to the number of squeezing until swallowing and the magnitude of each tongue pressure during squeezing of the gels. We also revealed that the maximum tongue pressure and the fracture properties of gels which can be crushed by tongue compression were positively correlated.

Academic Significance and Societal Importance of the Research Achievements

近年,高齢化に伴い,摂食嚥下障害者のための介護食の開発や提供が発展してきた.その結果,歯による咀嚼以外にも舌のよる押し潰しや歯茎での押し潰しといった代償的な咀嚼を考慮する必要が出てきた.しかし,これら代償的な咀嚼に関しては不明な点が非常に多い.本研究で得られた「最大舌圧は舌押し潰し嚥下時の舌押し潰し行動に影響を与える」という知見は,食品の摂食嚥下様相を口腔機能から予測できることを示唆し,今後,摂食嚥下障害を有する高齢者に対して,摂食嚥下能力に応じた介護食を提供する際に有益な基礎的知見になると考えられる.

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (7 results)

All 2022 2021 2020

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (3 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Effect of maximal voluntary tongue pressure and mechanical properties of gels on tongue pressure production when squeezing gels2022

    • Author(s)
      Murakami Kazuhiro、Hori Kazuhiro、Uehara Fumiko、Salazar Simonne E.、Ishihara Sayaka、Nakauma Makoto、Funami Takahiro、Ono Takahiro
    • Journal Title

      Food Hydrocolloids

      Volume: 124 Pages: 107323-107323

    • DOI

      10.1016/j.foodhyd.2021.107323

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of hard gummy candy chewing on masticatory function2021

    • Author(s)
      Fujiwara Shigehiro、Hori Kazuhiro、Shitara Satoko、Okawa Jumpei、Kodama Shohei、Murakami Kazuhiro、Ono Takahiro
    • Journal Title

      Journal of Oral Rehabilitation

      Volume: 48 Issue: 8 Pages: 909-915

    • DOI

      10.1111/joor.13208

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Compatibility of two types of gummy jelly tests for detecting decreased masticatory function2021

    • Author(s)
      Murakami Kazuhiro、Hori Kazuhiro、Yoneda Hiroyuki、Sato Naoko、Suwanarpa Ketsupha、Sta. Maria Ma. Therese、Marito Pinta、Nokubi Takashi、Ono Takahiro
    • Journal Title

      Gerodontology

      Volume: 39 Issue: 1 Pages: 10-16

    • DOI

      10.1111/ger.12601

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of fracture properties of gels on tongue pressure during different phases of squeezing and swallowing2021

    • Author(s)
      Murakami Kazuhiro、Tokuda Yoshitsugu、Hori Kazuhiro、Minagi Yoshitomo、Uehara Fumiko、Okawa Jumpei、Ishihara Sayaka、Nakauma Makoto、Funami Takahiro、Maeda Yoshinobu、Ikebe Kazunori、Ono Takahiro
    • Journal Title

      Journal of Texture Studies

      Volume: - Issue: 3 Pages: 1-2

    • DOI

      10.1111/jtxs.12593

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 補綴歯科医から見た粒子線治療患者の施設間連携2021

    • Author(s)
      村上和裕
    • Organizer
      第38回日本顎顔面補綴学会学術大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] The maximal voluntary tongue pressure can predict the limit fracture force value of gels in tongue squeezing2021

    • Author(s)
      Kazuhiro Murakami, Naohiko Kasakawa, Kazuhiro Hori, Kazunori Ikebe, Takahiro Ono
    • Organizer
      6th International conference on Food Oral Processing
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 最大咬合力と咀嚼中における食品の破砕度の関係2020

    • Author(s)
      村上和裕,總山彰雄,池邉一典,小野高裕
    • Organizer
      令和2年度日本補綴歯科学会関越支部学術大会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2023-01-30  

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