J Dent Rehabil Appl Sci.  2020 Mar;36(1):12-20. 10.14368/jdras.2020.36.1.12.

Association of depression with chewing problems in Koreans : A cross-sectional study using the Korea National Health and Nutrition Examination Survey 2016

  • 1Division of Child and Adolescent Psychiatry, Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
  • 2Korea Brain-Behavior Mental Health Institute, Iksan, Republic of Korea
  • 3Dental Clinic Center, ChungBuk National University Hosptial, Cheongju, Republic of Korea


This study was designed to analyze the relationship between the presence and severity of depression and chewing problems (CPs) in a representative sample of the general population.
Materials and Methods
Health surveys and examinations were conducted on a nationally representative sample (n = 8150) of Korean was conducted. CPs was determined by a simple survey response concerning “Do you feel uncomfortable about chewing your food because of problems with your mouth such as teeth,dentures and gums?” Depression was defined as individuals with a total score ≥ 10 on the Patient Health Questionnaire (PHQ)-9 survey. Data regarding demographics, socioeconomic history and comorbid health conditions were used to analyze adjusted logistic regression models.
In the Korean population, the prevalence of depression was significantly greater in individuals with CP (17.2%) than in those without CP (10.2%). On multivariate logistic regression analysis, the presence of depression was significantly associated with CPs (adjusted odd ratio [aOR]: 1.90, P < 0.001). The risk of CPs increased with increasing severity of depression as follows: severe depression (OR: 2.62, P < 0.001), moderately severe depression (OR: 2.19, P < 0.001).
The presence of depression was significantly associated with CPs, especially in severely depressed individuals. Depression screening should be considered in treating CP patients.


depression; the Korea National Health and Nutrition Examination Survey (KNHANES); chewing problem; prevalence; risk factors; general population
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