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Analysis of the analgesic mechanism of intra oral chronic pain by the positive expectation for the treatment

Research Project

Project/Area Number 20K18659
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57060:Surgical dentistry-related
Research InstitutionThe University of Tokushima (2021-2023)
Tokyo Medical and Dental University (2020)

Principal Investigator

WATANABE Takeshi  徳島大学, 大学院医歯薬学研究部(医学域), 助教 (80815217)

Project Period (FY) 2021-03-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywordsノセボ効果 / プラセボ効果 / 歯科 / 副作用 / 国際比較 / 期待感 / 不安感 / 歯科医療 / 慢性疼痛 / プラセボ―ム
Outline of Research at the Start

本研究は、口腔内の慢性疼痛の形成過程および治療に対して、患者さんの治療への予測(期待感や不安感)が与える影響についての解析を目的としている。形成過程については、歯科治療時における不安感が治療後に残る違和感への影響について、歯科におけるランダム化比較試験のプラセボ群における副作用に注目したメタ分析を行うことで検証する。治療効果への影響については治療時に取得する患者さんのデータを用いて検討する。本研究により、歯科医療に「患者さんの治療への予測」という視点が加わることで、慢性疼痛で悩む患者さんの減少および慢性疼痛治療の最適化につながることを期待している。

Outline of Final Research Achievements

Nocebo effect, a phenomenon characterized by suboptimal treatment efficacy, worsening of symptoms, or the occurrence of adverse events caused by a patient's negative treatment expectation has attracted attention among various medical fields. Although in dentistry, there are many factors which may cause nocebo effects such as sharp instruments and unpleasant sound, the amount of evidence regarding nocebo effect is limited. In this project, we published a review article which showed the importance of conducting reserch in nocebo effect in the field of dentistry (Watanabe et al., J. Oral Rehabil. 2022). Moreover, we also performed a meta-analysis showing the nocebo response in the placebo arm of clinical trials in analgesic treatment after third molar removal (Watanabe et al., J. Oral Rehabil. 2023). We'll conduct further studies eliucidating the mechanism of nocebo effect and how minimize nocebo effect in dental clinical practice.

Academic Significance and Societal Importance of the Research Achievements

歯科は痛みや不快感を伴う治療が多いが、そういった痛みや不快感は、治療に対する向き合い方次第で、軽減することが可能であることが本研究により示唆されている。臨床研究などによって、ノセボ効果発生のメカニズムやノセボ効果の最小化を実現する治療法の開発を行うことで、患者さんの治療における痛みや不快感を最小化し、治療効果を最大化することが出来ると期待している。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (16 results)

All 2024 2023 2022 Other

All Int'l Joint Research (5 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Remarks (3 results)

  • [Int'l Joint Research] オーフス大学(デンマーク)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] オーフス大学(デンマーク)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] マルメ大学(スウェーデン)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Aarhus University(デンマーク)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Malmo University(スウェーデン)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Nocebo response in dentistry: A systematic review and meta-analysis of adverse events in analgesic trials of third molar removal2023

    • Author(s)
      Takeshi Watanabe, Mette Sieg, Sigrid Juhl Lunde, Mads Persson, Pankaj Taneja, Lene Baad-Hansen, Maria Pigg, Lene Vase
    • Journal Title

      Journal of Oral Rehabilitation

      Volume: 50 Issue: 4 Pages: 332-342

    • DOI

      10.1111/joor.13414

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Coffee and metabolic phenotypes: A cross-sectional analysis of the Japan multi-institutional collaborative cohort (J-MICC) study2023

    • Author(s)
      Watanabe Takeshi、Arisawa Kokichi、Nguyen Tien Van、Ishizu Masashi、Katsuura-Kamano Sakurako et al.
    • Journal Title

      Nutrition, Metabolism and Cardiovascular Diseases

      Volume: 33 Issue: 3 Pages: 620-630

    • DOI

      10.1016/j.numecd.2022.12.019

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] What is the nocebo effect and does it apply to dentistry? A narrative review2022

    • Author(s)
      Takeshi Watanabe, Mette Sieg, Sigrid Juhl Lunde, Pankaj Taneja, Lene Baad-Hansen, Maria Pigg and Lene Vase
    • Journal Title

      Journal of Oral Rehabilitation

      Volume: 49 Issue: 5 Pages: 586-591

    • DOI

      10.1111/joor.13306

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] コーヒー摂取と代謝表現型:J-MICC研究のベースラインデータを用いた横断研究,2024

    • Author(s)
      渡邊 毅
    • Organizer
      令和5年度コホート・生体試料支援プラットフォーム若手支援研究成果発表会, 2024年2月.
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Placebo/Nocebo research in the post-GWAS era,2023

    • Author(s)
      Takeshi Watanabe
    • Organizer
      4th International Conference of the Society for Interdisciplinary Placebo Studies (SIPS), Duisburg, Germany, May 2023.
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] コーヒー摂取と代謝表現型:J-MICC研究のベースラインデータを用いた横断研究2023

    • Author(s)
      渡邊 毅
    • Organizer
      2023 年度科学研究費補助金「コホート・生体試料支援プラットフォーム」支援に係る会議日本多施設共同コーホート(J-MICC)研究2023 年度 第2回全体会議
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] コーヒー摂取と代謝表現型:J-MICC Studyのベースラインデータを用いた横断研究2023

    • Author(s)
      渡邊 毅, 有澤 孝吉, Nguyen Van Tien, 石津 将, 釜野 桜子
    • Organizer
      第33回日本疫学会学術総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Nocebo response in Dentistry: A systematic review and meta-analysis2022

    • Author(s)
      Takeshi Watanabe, Mette Sieg, Sigrid Juhl Lunde, Mads Persson, Pankaj Taneja, Lene Baad-Hansen, Maria Pigg and Lene Vase
    • Organizer
      IASP 2022 World Congress on Pain
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Remarks] Prof. Lene Vase (Aarhus University)

    • URL

      https://pure.au.dk/portal/en/persons/lene-vase(efb21f77-3dc3-425c-b185-d30c3518d8ba)/publications/what-is-the-nocebo-effect-and-does-it-apply-to-dentistry(ffa04901-bdea-433b-92b2-a6327ce4263a).html

    • Related Report
      2021 Research-status Report
  • [Remarks] Assoc Prof. Maria Pigg (Malmo; University)

    • URL

      http://mau.diva-portal.org/smash/record.jsf?pid=diva2%3A1637696&dswid=-2294

    • Related Report
      2021 Research-status Report
  • [Remarks] Prof. Lene Baad-Hansen (Aarhus University)

    • URL

      https://pure.au.dk/portal/en/publications/what-is-the-nocebo-effect-and-does-it-apply-to-dentistry(ffa04901-bdea-433b-92b2-a6327ce4263a).html

    • Related Report
      2021 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

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