The Impact of Masticatory Function on Cognitive Impairment in Older Patients: A Population-Based Matched Case-Control Study

Kyung A. Ko, Jin Young Park, Jung Seok Lee, Byoung Seok Ye, Ui Won Jung, Seong Ho Choi, Jae Kook Cha

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: The aim of this study was to investigate the association between the changes in masticatory function and cognitive impairment by analyzing longitudinal data of older Korean patients. Materials and Methods: Patients aged over 60 years with dental records between 2005 to 2010 (baseline; T1) and 2014 to 2020 (follow-up; T2) were selected in a single medical center. Based on the dementia diagnosis after T2, the cohort was classified into two groups, the dementia group (n=122) and the control group (n=366). Changes in masticatory function were calculated using the total functional tooth unit (T-FTU) in both groups. The incidence of tooth extraction (%) and the subsequent rehabilitation during the observation period were also evaluated. Results: In the dementia group, T-FTU significantly decreased from T1 to T2 (9.81±2.78 to 9.11±3.16, respectively, p=0.008), while no significant change was observed in the control group. During the mean observation period of 9 years, significantly more teeth were extracted and neglected to be prosthetically restored in the dementia group than in the control group. Regression analysis re-vealed that the number of missing teeth neglected [odds ratio (OR)=1.195, 95% confidence interval (CI)=1.025–1.393, p=0.023] and previous alcohol consumption (OR=4.445, 95% CI=1.831–1.795, p=0.001) were the most significant risk factors of dementia. Conclusion: There might be a causative relationship between the neglected missing dentition and the onset of dementia.

Original languageEnglish
Pages (from-to)783-789
Number of pages7
JournalYonsei medical journal
Volume63
Issue number8
DOIs
Publication statusPublished - 2022 Aug

Bibliographical note

Funding Information:
This research was supported by a grant of the Medical data-driven hospital support project through the Korea Health Information Service (KHIS), funded by the Ministry of Health & Welfare, Republic of Korea.

Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. NRF-2019R1C1C1006622).

Publisher Copyright:
© Yonsei University College of Medicine 2022.

All Science Journal Classification (ASJC) codes

  • Medicine(all)

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