Objectives : We investigated the reduction in individuals’ oral functioning who were living in the community and required minor nursing support. We examined the decline in oral functioning’s effect on the frequency of leaving one’s house, which is an indicator for social isolation.
Methods : Anonymous self-report questionnaires were distributed by staff members to 897 users of day service from the A office in Hyogo prefecture. Responses were received from 616 individuals (response rate=68.7%, mean age=78.6±8.7 years, range=43-97 years, 54.8% women). A χ 2 test and Mann-Whitney U test were conducted for three items assessing oral functioning (masticatory dysfunction, swallowing dysfunction, presence of dry mouth) and basic attributes, the social isolation indicator, Basic Activities of Daily Living (BADL), motor ability/risk of falling index, and depression. A logistic regression analysis was conducted with the presence or absence of the social isolation indicator (i.e., a decline in leaving one’s home) as the dependent variable.
Results : Regarding BADL, 72.3% bathed independently and 52.8% had an accident in the restroom. The masticatory dysfunction was 44.1%, swallowing dysfunction was 46.2%, and presence of dry mouth was 39.5%. Moreover, 52.3% responded that “The frequency that I leave the house has declined since last year.” This frequency was significantly higher in the group with decreased oral functioning. The logistic regression analysis revealed that among all oral functioning variables, masticatory dysfunction had the strongest effect (odds ratio=1.56, confidence interval=1.01-2.45, p<.05).
Discussion : The results showed a decline in the frequency of leaving one’s home was associated with the decline of oral functions of elderly individuals. Oral functioning decline and a decline in the frequency of leaving one’s home leads to a deteriorating physical condition, which also influences social isolation and might affect psychological aspects such as cognitive functioning or decreased desire for activity. Preventing masticatory dysfunction is considered to help prevent social isolation. Our hope is to promote dietary education and healthier eating behavior.
Conclusions : Oral functioning is significantly associated with a decline in the frequency of leaving one’s home for elderly individuals living in the community. Within all oral functioning variables, masticatory dysfunction shall be emphasized as a variable that directly leads to social isolation.
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