Links Between Oral Function and Cognitive Function in Older Adults
DOI:
https://doi.org/10.46862/interdental.v21i3.12476Keywords:
Cognitive function, older adults, oral functionAbstract
Introduction: Currently, every country in the world is experiencing a growing older adults population, both in number and proportion. The aging process in older adults is parallel to a decline in numerous physiological functions, including oral function. Older adults who encounter decreased oral function are likely to manifest symptoms such as impaired articulation, episodes of choking during eating, and an increase in the amount of food they cannot chew. Recent research reports that decreased oral function may affect brain function and trigger the onset of cognitive decline. This article review aims to explores the connections between oral function and cognitive function in older adults.
Review: Today’s view of oral health is more than the number of teeth present and whether or not oral hygiene is sufficient but also includes the ability to perform functions such as mastication, tongue and lip motor skills, salivary secretion and swallowing. Decreased oral function has led to the concept of oral frailty which characterized by a gradual decline in oral functions such as chewing, swallowing, tongue pressure, and oral motor skills. Initially proposed by Tanaka, oral frailty is now recognized not merely as a dental issue but as a potential early marker of broader systemic decline, including cognitive impairment.
Conclusion: Decreased oral function could also be causative factor for the onset of cognitive decline in older adults.
Downloads
References
1. Huang F, Zhang M, Wang S. Changes in cognitive function among older adults: A latent profile transition analysis. Archives of gerontology and geriatrics 2019; 80: 12–19. Doi: 10.1016/j.archger.2018.09.006
2. Harvey PD. Domains of cognition and their assessment. Dialogues in clinical neuroscience 2019; 21(3): 227–237. Doi: 10.31887/DCNS.2019.21.3/pharvey
3. Farsai PS. Cognitive impairment in older adults and oral health considerations: treatment and management. Clinics in geriatric medicine 2023; 39(2): 295–310. Doi: 10.1016/j.cger.2023.01.001
4. Darmawati, Irma, Purnama H, Lindayani L. Skrining cognitive impairment pada pasien hipertensi di Bandung. Jurnal Ilmiah Keperawatan 2019; 5 (2): 114-20. Doi: 10.33023/jikep.v5i2.267.
5. Farina N, Jacobs R, Turana Y, Fitri FI, Schneider M, Theresia I, Docrat S, Sani TP, Augustina L, Albanese E, Comas-Herrera A, Du Toit P, Ferri CP, Govia I, Ibnidris A, Knapp, M, Banerjee S. Comprehensive measurement of the prevalence of dementia in low- and middle-income countries: STRiDE methodology and its application in Indonesia and South Africa. BJPsych open 2023; 9(4): e102. Doi: 10.1192/bjo.2023.76
6. Sari NR, Yulianto KT, Agustina R, Wilson H, Nugroho SW, Anggraeni G. Statistik Penduduk Lanjut Usia 2023. (Rachmawati Y, Sinang R, Santoso B, eds.). Badan Pusat Statistik; 2023. https://www.bps.go.id
7. Syarifah LM, Puspasari D, Trihono, Lestary H. Survei Kesehatan Indonesia 2023 Dalam Angka. Jakarta: Kemenkes; 2023.
8. Chen Y, Li C, Fan Y. Associations of oral health status and swallowing function with cognitive impairment in the aging population: a cross-sectional study. BMC Oral Health 2023; 23(912): 1-9. Doi: 10.1186/s12903-023-03640-5
9. Iyota K, Mizutani S, Oku S, Asao M, Futatsuki T, Inoue R, Imai Y, Kashiwazaki H. A cross-sectional study of age-related changes in oral function in healthy japanese individuals. International journal of environmental research and public health 2020; 17(4): 1376. Doi: 10.3390/ijerph17041376
10. Watanabe Y, Okada K, Kondo M, Matsushita T, Nakazawa S, Yamazaki Y. Oral health for achieving longevity. Geriatrics & gerontology international 2020; 20(6): 526–538. Doi: 10.1111/ggi.13921
11. Nangle MR, Riches J, Grainger SA, Manchery N, Sachdev PS, Henry JD. Oral health and cognitive function in older adults: A systematic review. Gerontology 2019; 65(6): 659–672. Doi: 10.1159/000496730
12. Nagatani M, Tanaka T, Son BK, Kawamura J, Tagomori J, Hirano H, Shirobe M, Iijima K. Oral frailty as a risk factor for mild cognitive impairment in community-dwelling older adults: Kashiwa study. Experimental gerontology 2023; 172: 112075. Doi: 10.1016/j.exger.2022.112075
13. Kugimiya Y, Ueda T, Watanabe Y, Takano T, Edahiro A, Awata S, Sakurai K. Relationship between mild cognitive decline and oral motor functions in metropolitan community-dwelling older Japanese: The Takashimadaira study. Archives of gerontology and geriatrics 2019; 81: 53–58. Doi: 10.1016/j.archger.2018.11.008
14. Watanabe Y, Arai H, Hirano H, Morishita S, Ohara Y, Edahiro A, Murakami M, Shimada H, Kikutani T, Suzuki T. Oral function as an indexing parameter for mild cognitive impairment in older adults. Geriatrics & gerontology international, 2018; 18(5): 790–798. Doi: 10.1111/ggi.13259
15. Cho MJ, Kim JY, Jung YS, et al. Can the number of functional teeth potentially affect cognitive function? J Korean Acad Oral Health 2018; 42(2): 52. Doi: 10.11149/jkaoh.2018.42.2.52
16. Minakuchi S, Tsuga K, Ikebe K, Ueda T, Tamura F, Nagao K, Furuya J, Matsuo K, Yamamoto K, Kanazawa M, Watanabe Y, Hirano H, Kikutani T, Sakurai K. Oral hypofunction in the older population: Position paper of the Japanese Society of Gerodontology in 2016. Gerodontology 2018; 35(4): 317–324. Doi: 10.1111/ger.12347
17. Takahashi T, Hatta K, Ikebe K. Risk factors of cognitive impairment: Impact of decline in oral function. The Japanese dental science review 2023; 59: 203–208. Doi: 10.1016/j.jdsr.2023.06.006
18. Thu Ya M, Hasegawa Y, Sta. Maria MT. Predicting cognitive function changes from oral health status: a longitudinal cohort study. Sci Rep 2024; 14: 24153. Doi: 10.1038/s41598-024-75169-8
19. Wang M, Wang Z, Yu Y, Zhao D, Shen Z, Wei F. From teeth to brain: dental caries causally affects the cortical thickness of the banks of the superior temporal sulcus. BMC oral health 2024; 24(1): 124. Doi: 10.1186/s12903-024-03899-2
20. Yang I, Arthur RA, Zhao L, Clark J, Hu Y, Corwin EJ, Lah J. The oral microbiome and inflammation in mild cognitive impairment. Experimental gerontology 2021; 147: 111273. Doi: 10.1016/j.exger.2021.111273
21. Zhang XM, Wu X, Chen W. The association between number of teeth and cognitive frailty in older adults: A cross-cectional study. The journal of nutrition, health & aging 2022; 26(5): 430–438. Doi: 10.1007/s12603-022-1783-y
22. Peyron MA, Woda A, Bourdiol P, Hennequin, M. Age-related changes in mastication. Journal of oral rehabilitation 2017; 44(4): 299–312. Doi: 10.1111/joor.12478
Published
How to Cite
Issue
Section
License
Copyright (c) 2025 Astari Larasati, Lindawati S. Kusdhany, Czeresna Heriawan Soejono, Muslita Indrasari

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
- Every manuscript submitted to must observe the policy and terms set by the Interdental Jurnal Kedokteran Gigi (IJKG)
- Publication rights to manuscript content published by the Interdental Jurnal Kedokteran Gigi (IJKG) is owned by the journal with the consent and approval of the author(s) concerned.
- Full texts of electronically published manuscripts can be accessed free of charge and used according to the license shown below.




