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 2012; 36(1): 55-61

Published online March 30, 2012

Copyright © Journal of Korean Academy of Oral Health.

Factors related to the consumption of illegal dental treatments in Korean adults

Tae-Young Ok1, Man-Kyong Kim1, Dong-Hun Han2, Min-Ji Kim1, Seung-Hwa Jeong1, Jin-Bom Kim1

1Department of Preventive and Community Dentistry, School of Dentistry, Pusan National University, Busan, 2Department of Preventive and Social Dentistry, School of Dentistry, Seoul National University, Seoul, Korea


Objectives: The aim of the study was to analyze the factors that are related to the illegal dental treatment
experience (IDTX), among the Korean adults.
Methods: The raw data for the analysis of IDTX, among the Korean adults, which were aged 17 years
and over, were obtained from the dataset of the Korean National Oral Health Survey (KNOHS), which
was conducted in 2006. Stratified weighted total 11,808 samples were selected by region and clustered
sampling methods. The data of weighted total 11,808 samples were analyzed, using a chi-square test
and a logistic regression analysis, by demographic socioeconomic variables of age, gender, area, educational
level, occupation, national health insurance, and monthly income.
Results: IDTX rate was under 10%, among the adults aged 35~44 years or below the age group.
However, it increased to 18.9%, among the adults aged 45~54 years and overtook over 30% among
the adults 55 years and over. The age group of high IDTX rate was coincided to the age group of high
number of lost teeth. Most of IDTX were presumed to prosthetic treatments. In IDTX rate of samples,
aged 45 years and over, odds ratio of females' was 1.3, compared to that of the males' odds ratio of
metropolitan area, 1.2 compared to rural area. IDTX rate was higher among the middle school or below
educational level group compared to that of college or over educational level group. IDTX rate of medicaid
or not joined to national health insurance group was 31.3%, higher than that of national health insurance
group. IDTX rates of low monthly income group, less than 4 million KRW were higher than monthly
income group of 4 million KRW or more.
Conclusions: To supply the prosthetic treatments for the population of medicaid and national health
insurance is needed to remove illegal dental treatments in Korea.

Keywords: Illegal dental treatment, Medicaid, National health insurance, Prosthetic treatment, Socioeconomic