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Effects of Oral Health Knowledge and Practices on Decayed, Missing and Filled Teeth Index and Quality of Life -Path Analysis Using Structural Equation Modeling-
J Dent Hyg Sci 2013;13:1-12
Published online March 31, 2013
© 2013 The Korean Society of Dental Hygiene Science.

Young-Soo Lee, Sung Yoon Bae1† and Jae-Hoon Ji2

Department of Dental Surgery, Inje University Pusan Paik Hospital, Busan 614-735, 1Department of Management and Graduate School of Public Health, Inje University, Busan 614-735, 2Department of Medical Administration, Dong-Eui Institute of Technology, Busan 614-715, Korea
Correspondence to: 배성윤
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
This study aims to measure oral health knowledge and practice level among dental clinic patients, and examine their relationships with decayed, missing and filled teeth (DMF) index and the oral health-related quality of life (QOL). Empirical data have been collected from 311 patients through structured questionnaires and dental examinations conducted in Busan area. According to the analysis of causal relationship, oral health knowledge turned out to have a direct effect on oral health practices, which exerted both direct and indirect effects on DMF index and oral health-related QOL. While DMF index directly affected the oral health-related QOL, oral health knowledge proved to have only an indirect effect on DMF index and oral health-related QOL, mediated by oral health practices. Considering all these findings, effective oral health education and other intervention programs should focus on motivating people to participate in the active practices of desirable oral health behaviors, which will lead to the prevention of oral diseases and the subsequent improvement in the QOL.
Keywords : Decayed, missing and filled teeth index, Health Knowledge, Attitudes, Practice, Oral Health, Quality of Life

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