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Relationship between Oral Function and Support/Care-Need Certification in Japanese Older People Aged ≥ 75 Years: A Three-Year Cohort Study

Author

Listed:
  • Komei Iwai

    (Department of Community Oral Health, School of Dentistry, Asahi University, 1851 Hozumi, Mizuho 501-0296, Japan)

  • Tetsuji Azuma

    (Department of Community Oral Health, School of Dentistry, Asahi University, 1851 Hozumi, Mizuho 501-0296, Japan)

  • Takatoshi Yonenaga

    (Department of Community Oral Health, School of Dentistry, Asahi University, 1851 Hozumi, Mizuho 501-0296, Japan)

  • Taketsugu Nomura

    (Gifu Dental Association, 1-18 Minamidori, Kano-cho, Gifu 500-8486, Japan)

  • Iwane Sugiura

    (Gifu Dental Association, 1-18 Minamidori, Kano-cho, Gifu 500-8486, Japan)

  • Yujo Inagawa

    (Gifu Dental Association, 1-18 Minamidori, Kano-cho, Gifu 500-8486, Japan)

  • Yusuke Matsumoto

    (Gifu Dental Association, 1-18 Minamidori, Kano-cho, Gifu 500-8486, Japan)

  • Seiji Nakashima

    (Gifu Dental Association, 1-18 Minamidori, Kano-cho, Gifu 500-8486, Japan)

  • Yoshikazu Abe

    (Gifu Dental Association, 1-18 Minamidori, Kano-cho, Gifu 500-8486, Japan)

  • Takaaki Tomofuji

    (Department of Community Oral Health, School of Dentistry, Asahi University, 1851 Hozumi, Mizuho 501-0296, Japan)

Abstract

The aim was to examine the relationships between oral functions and support/care-need certification in older people aged ≥ 75 years using the National Health Insurance (NHI) database system and data from Kani City, Gifu, Japan. In total, 732 older Japanese people aged ≥ 75 years who did not have support/care-need certification and underwent dental check-ups in Kani City in 2017 were followed up until 2020. Chewing state, tongue and lip function, and swallowing function were assessed by a self-administered questionnaire, an oral diadochokinesis test, and a repetitive saliva-swallowing test, respectively. The presence or absence of systemic diseases and of support/care-need certification was based on data collected by the NHI database. At follow up, 121 (17%) participants had support/care-need certification. The participants with support/care-need certification included more women ( p < 0.001) and older people ( p < 0.001); and had more hypertension ( p = 0.003), musculoskeletal disorders ( p < 0.001), pneumonia ( p = 0.044), poor chewing state ( p < 0.001), and poor swallowing function ( p = 0.003) than those without support/care-need certification. Furthermore, the presence of support/care-need certification at follow up was associated with sex (woman: odds ratio [OR], 2.120; 95% confidence interval [CI], 1.354 to 3.317), age (OR, 1.203; CI, 1.139 to 1.270), chewing state (poor: OR, 2.534; CI, 1.409 to 4.557), and swallowing function (poor: OR, 2.372; CI, 1.248 to 4.510) at baseline. However, tongue and lip function were not associated with support/care-need certification. The results indicate that older Japanese people aged ≥ 75 years with a poor chewing state and poor swallowing function at baseline had a higher risk for support/care-need certification after three years.

Suggested Citation

  • Komei Iwai & Tetsuji Azuma & Takatoshi Yonenaga & Taketsugu Nomura & Iwane Sugiura & Yujo Inagawa & Yusuke Matsumoto & Seiji Nakashima & Yoshikazu Abe & Takaaki Tomofuji, 2022. "Relationship between Oral Function and Support/Care-Need Certification in Japanese Older People Aged ≥ 75 Years: A Three-Year Cohort Study," IJERPH, MDPI, vol. 19(24), pages 1-9, December.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:24:p:16959-:d:1006163
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    References listed on IDEAS

    as
    1. Minoru Yamada & Hidenori Arai, 2017. "Self-Management Group Exercise Extends Healthy Life Expectancy in Frail Community-Dwelling Older Adults," IJERPH, MDPI, vol. 14(5), pages 1-8, May.
    2. Sato, Koryu & Ikeda, Takaaki & Watanabe, Ryota & Kondo, Naoki & Kawachi, Ichiro & Kondo, Katsunori, 2020. "Intensity of community-based programs by long-term care insurers and the likelihood of frailty: Multilevel analysis of older Japanese adults," Social Science & Medicine, Elsevier, vol. 245(C).
    3. Keiko Motokawa & Yurie Mikami & Maki Shirobe & Ayako Edahiro & Yuki Ohara & Masanori Iwasaki & Yutaka Watanabe & Hisashi Kawai & Takeshi Kera & Shuichi Obuchi & Yoshinori Fujiwara & Kazushige Ihara & , 2021. "Relationship between Chewing Ability and Nutritional Status in Japanese Older Adults: A Cross-Sectional Study," IJERPH, MDPI, vol. 18(3), pages 1-9, January.
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