J Dent Hyg Sci.  2016 Dec;16(6):481-487. 10.17135/jdhs.2016.16.6.481.

The Relationship between Dementia and Oral Health in Some Elderly in Daejeon

Affiliations
  • 1Department of Dental Hygiene, College of Medical Science, Konyang University, Daejeon 35365, Korea. denthwang@konyang.ac.kr

Abstract

The elderly population with dementia is rapidly growing in South Korea. The aim of this study was to investigate the relationship between dementia and oral health in 197 subjects aged ≥65 years. The questionnaire included questions on subjective health status, subjective health concern, subjective oral health status and behavior, mastication ability, Oral Health Impact Profile-14 (OHIP-14), and Korean Dementia Screening Questionnaires (KDSQ). Oral examination was conducted by a single dentist to evaluate upper or lower denture use, and determine the numbers of remaining and functioning teeth, including implant and fixed prosthesis. The subjects who required a dementia test (KDSQ-C [cognition] of ≥6) had significant differences in systemic disease prevalence rate, subjective health status, subjective health concern, KDSQ-V (vascular disease) score, KDSQ-D (depression) score, subjective oral treatment need, key food mastication ability and OHIP-14 score compared to the healthy subjects. The proportion of denture wearers, total remaining teeth, total functioning teeth, toothbrushing frequency, oral pain severity, symptoms of periodontal disease, subjective oral health status, and subjective oral health concern showed no significant differences between the two groups. KDSQ-C and OHIP-14 scores showed a strong positive relationship, while KDSQ-C score and total remaining teeth or key food mastication ability showed a weak negative relationship. In the multiple regression analysis, the KDSQ-D, KDSQ-V, and OHIP-14 scores influenced the KDSQ-C scores. We suggest a relationship between oral health and cognitive impairment.

Keyword

Aged; Dementia; Depression; Oral health; Quality of life

MeSH Terms

Aged*
Cognition Disorders
Dementia*
Dental Restoration Wear
Dentists
Dentures
Depression
Diagnosis, Oral
Diagnostic Self Evaluation
Healthy Volunteers
Humans
Korea
Mass Screening
Mastication
Oral Health*
Periodontal Diseases
Prevalence
Prostheses and Implants
Quality of Life
Tooth
Toothbrushing
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