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Kyu-Hyoung Jeong 1 Article
Mediating Effect of Cognitive Function on the Relationship Between Geriatric Oral Health and Quality of Life Among Korean Seniors
Eun Jee Chang, Hyun-Jae Woo, Kyu-Hyoung Jeong
J Prev Med Public Health. 2022;55(1):106-113.   Published online January 12, 2022
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AbstractAbstract AbstractSummary PDFSupplementary Material
Previous studies have found that the oral health of seniors can affect their physical nutrition and quality of life (QoL). Additionally, poor oral health can lead to the development of dementia, which is associated with decreased cognitive function. This study aimed to examine the impact of geriatric oral health (GOH) on the QoL of Korean seniors and the mediating effects of cognitive function.
We used data from the seventh Korean Longitudinal Study of Aging conducted in 2018. In total, 4049 seniors were included in our study. We analyzed the impact of GOH on QoL according to 5 mediating domains of cognitive function and control variables. To examine each path of mediating effects, bootstrapping with 5000 iterations was performed with 95% confidence intervals.
Our findings revealed that good GOH had a positive effect on the QoL of seniors. Also, better GOH corresponded to a higher degree of cognitive function within all 5 domains: orientation, memory registration, attention/calculation, memory recall, and language and visuospatial ability. In addition, 3 domains of the 5 domains (attention/calculation, memory recall, and language and visuospatial ability) had significant mediating effects on the relationship between GOH and QoL.
This study suggests that adequate management of GOH is crucial for promoting a better QoL and a high degree of cognitive function among seniors. To prevent cognitive impairment, such as dementia, future studies should take a more targeted approach by examining data according to each cognitive domain and various socio-demographic factors.
Korean summary
본 연구는 2018년도 7차 한국고령화연구패널조사(KLoSA) 자료를 이용하여 65세 이상 노인4,049명을 대상으로 노인 구강건강 수준(GOHAI, Geriatric Oral Health Assessment Index)이 삶의 질에 미치는 영향을 확인하였다. 또한 K-MMSE(Korean Mini-Mental State Examination) 점수를 매개변수로 활용하여 인지기능을 시간 및 장소 지남력, 기억등록, 주의집중 및 계산력, 기억회상, 언어 및 시공간 구성력의 5가지 하위영역의 다중매개효과를 분석하였다. 그 결과, 노인의 구강건강은 삶의 질과 인지기능의 모든 하위영역에 영향을 미치는 것으로 나타났으며, 특히 인지기능 하위영역 중 주의집중 및 계산력, 기억회상, 언어 및 시공간 구성력이 구강건강과 삶의 질의 관계에서 유의한 매개효과를 보였다. 향후 노인의 삶의 질을 악화하는 주요 질환인 치주질환 및 구강건조증 등을 예방할 수 있도록 국가 차원의 구강보건사업을 확대하고, 인지기능 하위영역별 저하 양상에 따라 세분화된 약물적/비약물적 중재를 시행해야 한다.


Citations to this article as recorded by  
  • Association of Denture Use and Chewing Ability with Cognitive Function Analysed Using Panel Data from Korea Longitudinal Study of Aging (2006–2018)
    Nu-Ri Jun, Jae-Hyun Kim, Jong-Hwa Jang
    Healthcare.2023; 11(18): 2505.     CrossRef
  • Relationship Between Oral Health and Cognitive Impairment in the Older Adults of Bushehr City
    Sedegheh Khedish, Akram Farhadi, Hassan Malekizadeh, Zahra Sadat Jalaliyan, Marzeah Mahmoodi, Behrang Poorkhan
    South Medical Journal.2023; 26(1): 38.     CrossRef

JPMPH : Journal of Preventive Medicine and Public Health