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A Cross-Sectional Study of Age-Related Changes in Oral Function in Healthy Japanese Individuals

Author

Listed:
  • Kiyomi Iyota

    (Section of Geriatric Dentistry and Perioperative Medicine in Dentistry, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
    Iyota Dental Clinic, 2-5-5 Omiya, Chuo-ku, Fukuoka 810-0013, Japan)

  • Shinsuke Mizutani

    (Section of Geriatric Dentistry and Perioperative Medicine in Dentistry, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
    OBT Research Center, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, 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, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
    Geriatric Dentistry and Perioperative Medicine in Dentistry, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan)

  • Misa Asao

    (Geriatric Dentistry and Perioperative Medicine in Dentistry, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan)

  • Toshiko Futatsuki

    (Geriatric Dentistry and Perioperative Medicine in Dentistry, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan)

  • Ryosuke Inoue

    (Geriatric Dentistry and Perioperative Medicine in Dentistry, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan)

  • Yuko Imai

    (Geriatric Dentistry and Perioperative Medicine in Dentistry, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan)

  • Haruhiko Kashiwazaki

    (Section of Geriatric Dentistry and Perioperative Medicine in Dentistry, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan)

Abstract

Background: Oral function deterioration is related to a variety of factors, including aging, decline in activities of daily living, malnutrition, and cognitive decline. This cross-sectional study examined the effects of aging on oral function in healthy individuals. Methods: A retrospective study was conducted on 175 healthy, independent patients aged 40–89 years, without dementia and with ≥20 teeth, who visited a local dental clinic in Japan. Patients were compared with 92 university students aged 20–29 years. The seven criteria proposed by the Japanese Society of Gerodontology to diagnose “oral hypofunction” were observed and statistically analyzed. Results: Compared with those in the control group, the degree of tongue coating was increased in the group aged over 80 years, occlusal force was decreased in the group aged 70–79 years, tongue motor function was decreased in the groups aged 60–69 years and older, and tongue pressure was decreased in the groups aged 70–79 years and older. Conclusions: Healthy, independent individuals maintained several oral function criteria across aging, including oral mucosal wetness, occlusal force, lip motor function, masticatory function, and swallowing function. Tongue motor function and tongue pressure decreased with aging, indicating that these may be rehabilitation targets.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:4:p:1376-:d:323156
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    References listed on IDEAS

    as
    1. Kyoko Takahashi & Katsuaki Amemiya & Masahiro Nakatsuka & Kei Nakamura & Mari Kasai & Kenichi Meguro, 2019. "Impaired Eating and Swallowing Function in Older Adults in the Community: The Kurihara Project," IJERPH, MDPI, vol. 16(20), pages 1-8, October.
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    Cited by:

    1. 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.
    2. 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.
    3. 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.
    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.
    6. 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.

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