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KMID : 1020220190190050731
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Journal of Korean Society of Dental Hygiene
2019 Volume.19 No. 5 p.731 ~ p.742
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The relationship between sleep duration and the number of remaining teeth among the elderly using data from the Korean National Health and Nutrition Examination Survey (KNHANES)
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Kim Nam-Suk
Yun Jung-Won
Lee Jung-Hwa
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Abstract
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Objectives: To analyze the association between sleep duration and the number of remaining teeth in people aged 65 years or older in order to provide basic data for improving sleep quality and developing oral health programs for teeth maintenance.
Methods: The raw data for the analysis were obtained from the sixth Korean National Health and Nutrition Examination Survey (KNHANES) dataset, conducted between 2013 and 2015. The 4,340 subjects included in the study underwent oral examinations and then proceeded to answer related questions. The collected data were analyzed using SPSS (ver 23.0) program via composite samples, with the calculations for mean, standard deviation, chi-square test, and logistic return analysis being performed.
Results: An analysis of the effect of sleep duration on the number of remaining teeth among people aged >65 years old showed that if the confounding variables were not corrected for, the risk of having less than 9 hours of sleep was 1.40 times higher (95% CI: 1.06- 1.86). However, this was not statistically significant in models that corrected for gender, age, and other confounding variables (p>0.05).
Conclusions: The association between sleep duration among the elderly with their number of remaining teeth was confirmed. Therefore, measures to improve sleep quality and oral care practices to maintain the remaining teeth in people over 65 years old should be developed.
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KEYWORD
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Elderly, Korea National Health and Nutritional Examination Survey, Oral health, Remaining teeth, Sleep duration
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