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Development of tongue evaluation method using image recognition by deep learning

Research Project

Project/Area Number 20K18593
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

Okawa Jumpei  新潟大学, 医歯学系, 助教 (10846041)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords舌苔 / 口腔乾燥 / Tongue Coating Index / 画像認識 / 深層学習 / Tongue cCating Index / 舌 / 舌湿潤度 / 口腔機能低下症 / 舌評価 / 舌粘膜
Outline of Research at the Start

舌は、咀嚼・嚥下・構音などの口腔機能において重要な役割を担っている。舌表層に見られる舌苔の付着や舌粘膜の乾燥、舌の筋萎縮は、口腔機能に関連しており、これらの状態を評価することが重要である。しかし、舌の評価には専門的な知識や装置を要することが多い。研究代表者は、深層学習による画像認識技術に着目し、モバイル機器により舌機能を評価する試みを行っている。本研究課題では、モバイル機器で撮影した舌の写真から、簡便かつ信頼性の高い包括的な舌評価法の確立することを目的とする。

Outline of Final Research Achievements

Tongue coating and tongue dryness may cause oral hypofunction, which can be evaluated from the tongue surface. However, a simple objective and detailed method for examining the status of tongue has not been established. Image recognition technology based on deep learning is applied to medical examinations. Therefore, we hypothesized that applying the Image recognition to photographs of the tongue could be applied to examinations for tongue.
The tongue image of the older people was photographed, and the data of the tongue coating and the tongue dryness were obtained by dentists or examination equipment. Deep learning was performed to generate image recognition model to estimate the tongue status. The image recognition model could estimate the tongue coating status and the degree of tongue dryness.

Academic Significance and Societal Importance of the Research Achievements

口腔機能の低下は、フレイルの主な原因である低栄養やサルコペニアを引き起こす。口腔衛生状態の不良による舌苔の付着や口腔乾燥による舌粘膜の湿潤度の低下は、口腔機能の低下を引き起こすことから、口腔機能低下症の診断基準の1つにもなっている。口腔機能が低下している者は、特に高齢者において在宅介護および施設入居、入院患者まで広く存在すると考えられる。
本研究より、舌の写真撮影から舌苔の付着や舌粘膜の湿潤度などの舌機能の評価が「だれでも・どこでも・簡単に」実施可能となる。さらに、評価に基づいた口腔ケアやリハビリ計画の決定に貢献できるものと考えている。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (17 results)

All 2022 2021 2020

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Retronasal aroma dynamics related to the swallowing threshold2022

    • Author(s)
      Okawa Jumpei、Hori Kazuhiro、Yoshimoto Tasuku、Ono Takahiro
    • Journal Title

      Journal of Oral Rehabilitation

      Volume: 50 Issue: 1 Pages: 69-75

    • DOI

      10.1111/joor.13389

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 嚥下障害が疑われる総合病院入院患者における適切な食形態選択のための関連因子の検討2022

    • Author(s)
      2.重本心平,堀 一浩, 大川純平,小野高裕,宮島 久
    • Journal Title

      日本咀嚼学会雑誌

      Volume: 32 Pages: 1-11

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Modulation of tongue motion and tongue pressure during liquid swallowing with different bolus volumes2021

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

      Journal of Oral Rehabilitation

      Volume: 48 Issue: 11 Pages: 1243-1251

    • DOI

      10.1111/joor.13248

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [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 Research-status Report
    • Peer Reviewed
  • [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
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Higher Masticatory Performance and Higher Number of Chewing Strokes Increase Retronasal Aroma2021

    • Author(s)
      Okawa Jumpei、Hori Kazuhiro、Yoshimoto Tasuku、Salazar Simonne E.、Ono Takahiro
    • Journal Title

      Frontiers in Nutrition

      Volume: 8

    • DOI

      10.3389/fnut.2021.623507

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reliability of a novel wearable device to measure chewing frequency2021

    • Author(s)
      Hori Kazuhiro、Uehara Fumiko、Yamaga Yoshio、Yoshimura Shogo、Okawa Jumpei、Tanimura Motoki、Ono Takahiro
    • Journal Title

      Journal of Prosthodontic Research

      Volume: 65 Issue: 3 Pages: 340-345

    • DOI

      10.2186/jpr.JPR_D_20_00032

    • NAID

      130008076973

    • ISSN
      1883-1958, 1883-9207
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 深層学習による画像認識技術を用いた舌苔付着度の評価2022

    • Author(s)
      大川純平,堀一浩,泉野裕美,福田昌代,畑山千賀子,小野高裕
    • Organizer
      日本老年歯科医学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] すれ違い咬合に対して根面アタッチメントを用いた残根上義歯にて機能回復を図った症例2022

    • Author(s)
      大川純平
    • Organizer
      日本補綴歯科学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] モバイル機器を用いた咀嚼能率および舌苔付着度の画像解析2022

    • Author(s)
      大川純平
    • Organizer
      日本老年歯科医学会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Your Urge to Swallow may be Influenced by Retronasal Aroma2021

    • Author(s)
      Jumpei Okawa, Kazuhiro Hori, Tasuku Yoshimoto, Takahiro Ono
    • Organizer
      6th International Conference on Food Oral Processing 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Detection of Pharyngeal Residue after Swallowing using Odor Sensor2021

    • Author(s)
      Jumpei Okawa, Kazuhiro Hori, Fumiko Uehara, Shohei Kodama, Satoko Shitara, Takahiro Ono
    • Organizer
      World Dysphagia Summit 2020
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 舌運動と舌圧との同時計測による嚥下動態の解析2021

    • Author(s)
      大川純平、堀一浩、設樂仁子、兒玉匠平、小野高裕
    • Organizer
      LIFE 2020-2021
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 深層学習による画像認識技術を応用した舌苔(舌の汚れ)と舌湿潤度(舌の乾燥)の評価2021

    • Author(s)
      大川純平
    • Organizer
      新技術説明会
    • Related Report
      2021 Research-status Report
  • [Presentation] 高い咀嚼能率はレトロネーザルアロマの発生を促進する2020

    • Author(s)
      大川純平,堀 一浩,善本 佑,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
  • [Presentation] 総合病院入院中の嚥下障害患者における咀嚼・嚥下機能と食事形態2020

    • Author(s)
      重本心平,堀 一浩,大川純平,宮島 久,小野高裕
    • Organizer
      日本咀嚼学会第31回学術大会
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] 舌状態推定装置、舌状態推定方法及びプログラム2021

    • Inventor(s)
      小野高裕、堀一浩、大川純平
    • Industrial Property Rights Holder
      小野高裕、堀一浩、大川純平
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-159436
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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