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Regional difference and personal and environmental factors of oral health in older people aiming at policy intervention

Research Project

Project/Area Number 18H03018
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 57080:Social dentistry-related
Research InstitutionKanagawa Dental College

Principal Investigator

Yamamoto Tatsuo  神奈川歯科大学, 大学院歯学研究科, 教授 (20252984)

Co-Investigator(Kenkyū-buntansha) 近藤 克則  千葉大学, 予防医学センター, 教授 (20298558)
相田 潤  東北大学, 歯学研究科, 准教授 (80463777)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2019: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords歯科口腔保健 / 高齢者 / 地域差 / 個人要因 / 環境要因 / 歯数 / 口腔機能 / 歯科保健行動
Outline of Final Research Achievements

Changes in regional differences in oral health status (number of teeth and oral function (decline of chewing function, swallowing difficulty and thirst)) and dental health behavior (dental visit due to treatment and check-ups), as well as environmental factors associated with the regional differences, were examined by adding a new 2019 survey using the self-administered questionnaire survey to those conducted every three years since 2010 among older people in 15 municipalities in Japan. In addition, regional differences in periodontitis (severe periodontal disease) were newly investigated. The results showed that regional differences in oral health status including periodontitis and dental health behavior existed and tended to increase over time, and that regional differences were related to the degree of urbanization and social capital (the strength of ties between people) even when individual factors were taken into account.

Academic Significance and Societal Importance of the Research Achievements

小児における口腔の健康状態の地域差は知られているが、成人においては調査のするための法的基盤がなかった。本研究において共通の指標で複数の自治体の高齢者を調査することによって、初めて成人の口腔の健康状態の地域差の実態と差が経年的に拡大していることが明らかになった。この結果は、国が進めている健康格差縮小対策に通じるものであり、歯科保健政策を立案するための重要な情報となる。また、成人の口腔の健康状態の地域差に都市度やソーシャル・キャピタル等の環境要因が関連することも明らかになり、これは今後の成人の歯科保健政策を進めるに当たってターゲットとする地域の特定や介入方法の検討に重要な示唆を与えるものである。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (8 results)

All 2021 2020 2019

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (3 results)

  • [Journal Article] Association Between Social Isolation and Smoking in Japan and England2021

    • Author(s)
      Ikeda T, Cable N, Saito M, Koyama S, Tsuji T, Noguchi T, Kondo K, Osaka K, Aida J.
    • Journal Title

      Journal of Epidemiology

      Volume: 31 Issue: 10 Pages: 523-529

    • DOI

      10.2188/jea.JE20200138

    • NAID

      130008101393

    • ISSN
      0917-5040, 1349-9092
    • Year and Date
      2021-10-05
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Does Laughter Predict Onset of Functional Disability and Mortality Among Older Japanese Adults? The JAGES Prospective Cohort Study2021

    • Author(s)
      Tamada Yudai、Takeuchi Kenji、Yamaguchi Chikae、Saito Masashige、Ohira Tetsuya、Shirai Kokoro、Kondo Katsunori
    • Journal Title

      Journal of Epidemiology

      Volume: 31 Issue: 5 Pages: 301-307

    • DOI

      10.2188/jea.JE20200051

    • NAID

      130008034648

    • ISSN
      0917-5040, 1349-9092
    • Year and Date
      2021-05-05
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Frailty is associated with susceptibility and severity of pneumonia in older adults (A JAGES multilevel cross-sectional study)2021

    • Author(s)
      Iwai-Saito Kousuke、Shobugawa Yugo、Aida Jun、Kondo Katsunori
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 7966-7975

    • DOI

      10.1038/s41598-021-86854-3

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Social Participation and Functional Decline: A Comparative Study of Rural and Urban Older People, Using Japan Gerontological Evaluation Study Longitudinal Data2020

    • Author(s)
      Ide K, Tsuji T, Kanamori S, Jeong S, Nagamine Y, Kondo K.
    • Journal Title

      International Journal of Environmental Research and Public Health

      Volume: 17 Issue: 2 Pages: 617-617

    • DOI

      10.3390/ijerph17020617

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Associations between vision, hearing and tooth loss and social interactions: the JAGES cross-sectional study2020

    • Author(s)
      Igarashi A, Aida J, Yamamoto T, Hiratsuka Y, Kondo K, Osaka K.
    • Journal Title

      Journal of Epidemiology and Community Health

      Volume: 75 Issue: 2 Pages: 171-176

    • DOI

      10.1136/jech-2020-214545

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 高齢者における現在歯数と口腔機能低下に関連する地域要因:JAGESプロジェクト横断研究2020

    • Author(s)
      持田悠貴,山本龍生,渕田慎也,相田潤,近藤克則
    • Organizer
      第69回日本口腔衛生学会・総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 30自治体における高齢者の歯数と口腔機能の地域差:日本老年学的評価研究2019

    • Author(s)
      持田悠貴,山本龍生,相田潤,渕田慎也,田中道雄,近藤克則
    • Organizer
      第68回日本口腔衛生学会・総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 高齢者における口腔機能低下に関連する地域要因:JAGESプロジェクト横断研究2019

    • Author(s)
      持田悠貴,山本龍生,渕田慎也,相田潤,近藤克則
    • Organizer
      神奈川歯科大学学会第54回総会
    • Related Report
      2019 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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