Abstract
Background: The ageing process declines body functions and disrupts circadian rhythms, resulting in insomnia. The salivary gland's functions are affected by insomnia as well. Disorders of salivary secretion, such as xerostomia and hyposalivation, are associated with low salivary function levels. Objective: This study investigates the relationship between xerostomia, hyposalivation, and insomnia in the elderly. Method: This study is analytical observational research using a cross-sectional approach. A total of ninety-one residents of Cipayung's Tresna Werdha Budi Mulia 1 nursing home were the subjects of the study. The Summated-Xerostomia Inventory (SXI-id) questionnaire was utilised to measure xerostomia, the Insomnia Severity Index (ISI) was employed to measure insomnia, and the unstimulated salivary flow rate based on the spitting method was used to measure salivation. Data analysis was conducted using Spearman's correlation test. Result: A significant linear correlation was observed between the insomnia score and unstimulated salivary flow rate (r = -0.370; p = 0.001) and between the insomnia score and the xerostomia score (r = 0.682). Conclusion: In the elderly, salivary gland secretion might be impacted by insomnia.
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