JKAOH Journal of Korean Academy of Oral Health

ISSN(Print) 1225-388X ISSN(Online) 2093-7784


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Original Article

Journal of Korean Academy of Oral Health 2014; 38(1): 31-40

Published online March 30, 2014 https://doi.org/10.11149/jkaoh.2014.38.1.31

Copyright © Journal of Korean Academy of Oral Health.

The mediation effects of psychological factors in the relationship
between mouth dryness and oral health related quality of life

Hee-Jung Park1, Minsung Sohn1, Jun Hyup Lee1, Bo-Hyoung Jin2, Sophia Lee3, Tae-Il Kim3

1BK21Plus Program in Public Health Sciences, Department of Health Sciences, Korea University Graduate School,2Department of Preventive & Social Dentistry and 3Department of Periodontology, Seoul National University School of Dentistry, Seoul, Korea

Received: January 10, 2014; Revised: February 12, 2014; Accepted: March 26, 2014


Objectives: The aim of this study was to investigate the role of psychological factors as mediators in thecasual relationship between mouth dryness and oral health-related quality of life of adults and to exploregender differences in what psychological factors play an important role in mediating the path of mouthdryness to quality of life.Methods: Self-administered questionnaires were distributed to 321 adults who are above 20 and under65 years of age. Collected data were analyzed via statistical packages using a multi-group analysisthrough the SEM (Structural Equation Model).Results: Based on the statistical analysis, stress was a major psychological factor in male subjects.While depression served as a main mediator in female subjects. We discovered that the path coefficientsof the following paths showed significant gender differences: mouth dryness → depression, depression→ quality of life, stress → quality of life.Conclusions: A gender-specific approach regarding effective prevention of stress and depression maybe important for understanding the relationship between mouth dryness and quality of life.

Keywords: Depression, Mouth dryness, Oral health, Quality of life, Stress