IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v17y2020i22p8700-d449712.html
   My bibliography  Save this article

Low Tongue Strength and the Number of Teeth Present Are Associated with Cognitive Decline in Older Japanese Dental Outpatients: A Cross-Sectional Study

Author

Listed:
  • Rui Egashira

    (Section of Geriatric Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka 814-0193, Japan)

  • Shinsuke Mizutani

    (OBT Research Center, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, Japan
    Section of Geriatric Dentistry and Perioperative Medicine in Dentistry, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, Japan)

  • Masahiro Yamaguchi

    (Section of Geriatric Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka 814-0193, Japan)

  • Tomotaka Kato

    (Department of Oral Health Sciences, University of Washington, Seattle, WA 98195, USA)

  • Yojiro Umezaki

    (Section of Geriatric Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka 814-0193, Japan)

  • Saori Oku

    (Section of Geriatric Dentistry and Perioperative Medicine in Dentistry, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, Japan)

  • Keiko Tamai

    (Section of Geriatric Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka 814-0193, Japan)

  • Toyoshi Obata

    (Obata Medical Clinic, Fukuoka 814-0175 Japan)

  • Toru Naito

    (Section of Geriatric Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka 814-0193, Japan)

Abstract

To mitigate the impact of dementia, initiating early intervention is important. This study aims to investigate the associations between deterioration in oral function and cognitive decline in older outpatients whose oral health was maintained in the dental clinic. This study included 50 outpatients aged ≥65 years. We used the Japanese version of the Montreal Cognitive Assessment (MoCA-J) to assess cognitive decline. Oral function was evaluated by tongue pressure, masticatory performance, and swallowing ability. A full-mouth periodontal examination was conducted, and the occlusal support and number of teeth were recorded. Odds ratios (ORs) and 95% confidence intervals (CIs) for cognitive decline (MoCA-J score ≤25 points) were calculated using logistic regression models. The age, number of teeth, tongue pressure, and masticatory performance were significantly correlated with cognitive decline ( p < 0.05). Logistic regression analyses revealed that cognitive decline was independently associated with age (OR: 1.25; 95% CI: 1.03–1.52; p = 0.024), number of teeth (OR = 0.83; 95% CI: 0.76–1.00; p = 0.047), and lower tongue pressure (OR: 0.87; 95% CI: 0.77–0.98; p = 0.022). Lower tongue pressure and a small number of remaining teeth may be associated with cognitive decline in Japanese outpatients.

Suggested Citation

  • Rui Egashira & Shinsuke Mizutani & Masahiro Yamaguchi & Tomotaka Kato & Yojiro Umezaki & Saori Oku & Keiko Tamai & Toyoshi Obata & Toru Naito, 2020. "Low Tongue Strength and the Number of Teeth Present Are Associated with Cognitive Decline in Older Japanese Dental Outpatients: A Cross-Sectional Study," IJERPH, MDPI, vol. 17(22), pages 1-12, November.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:22:p:8700-:d:449712
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/17/22/8700/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1660-4601/17/22/8700/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Kiyomi Iyota & Shinsuke Mizutani & Saori Oku & Misa Asao & Toshiko Futatsuki & Ryosuke Inoue & Yuko Imai & Haruhiko Kashiwazaki, 2020. "A Cross-Sectional Study of Age-Related Changes in Oral Function in Healthy Japanese Individuals," IJERPH, MDPI, vol. 17(4), pages 1-11, February.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Ji-Yun Ki & Se-Rim Jo & Kyung-Sook Cho & Jung-Eun Park & Ja-Won Cho & Jong-Hwa Jang, 2021. "Effect of Oral Health Education Using a Mobile App (OHEMA) on the Oral Health and Swallowing-Related Quality of Life in Community-Based Integrated Care of the Elderly: A Randomized Clinical Trial," IJERPH, MDPI, vol. 18(21), pages 1-13, November.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Moon-Young Chang & Gihyoun Lee & Young-Jin Jung & Ji-Su Park, 2020. "Effect of Neuromuscular Electrical Stimulation on Masseter Muscle Thickness and Maximal Bite Force among Healthy Community-Dwelling Persons Aged 65 Years and Older: A Randomized, Double Blind, Placebo," IJERPH, MDPI, vol. 17(11), pages 1-10, May.
    2. Ryuichi Shirahase & Yutaka Watanabe & Tohru Saito & Yusuke Sunakawa & Yuya Matsushita & Hideki Tsugayasu & Yutaka Yamazaki, 2022. "A Cross-Sectional Study on the Relationship between Oral Function and Sarcopenia in Japanese Patients with Regular Dental Maintenance," IJERPH, MDPI, vol. 19(9), pages 1-12, April.
    3. Rena Hidaka & Junichi Furuya & Akira Nishiyama & Hiroyuki Suzuki & Michiyo Aoyagi & Chiaki Matsubara & Yu Yoshizumi & Kanako Yoshimi & Ayako Nakane & Haruka Tohara & Yuji Sato & Shunsuke Minakuchi, 2021. "Structural Equation Modeling of Tongue Function and Tongue Hygiene in Acute Stroke Patients," IJERPH, MDPI, vol. 18(9), pages 1-9, April.
    4. Tasuku Yoshimoto & Yoko Hasegawa & Mayuka Furihata & Akihiro Yoshihara & Masako Shiramizu & Ma. Therese Sta. Maria & Shoko Hori & Mayuko Morikawa & Pinta Marito & Noboru Kaneko & Kaname Nohno & Hirosh, 2022. "Effects of Interval Walking Training on Oral Health Status in Middle-Aged and Older Adults: A Case-Control Study," IJERPH, MDPI, vol. 19(21), pages 1-11, November.
    5. Shinsuke Mizutani & Hideaki Matsuzaki & Kiyomi Iyota & Asuka Tani & Saori Oku & Hiroaki Tabuchi & Akiko Fujiwara & Shizuka Hase-Tamaru & Hiro Kishimoto & Kenji Narazaki, 2023. "Changes of Oral and Physical Functions in Older Japanese Who Participated in Keyboard Harmonica and Exercise Classes during COVID-19-Related Movement Restrictions," IJERPH, MDPI, vol. 20(4), pages 1-11, February.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jijerp:v:17:y:2020:i:22:p:8700-:d:449712. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.