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 2019; 43(2): 63-71

Published online June 30, 2019 https://doi.org/10.11149/jkaoh.2019.43.2.63

Copyright © Journal of Korean Academy of Oral Health.

Caries reduction effect of permanent teeth from community water fluoridation program for 17 years in Jinju city

Tae-Young Ok1, Yong-Bong Kwon1, Ji-Soo Kim1,2, Se-Yeon Kim1,2, Jung-Ha Lee1, Han-Na Kim3, Jin-Bom Kim1,2

1Department of Preventive & Community Dentistry, 2BK21 PLUS Project, Pusan National University School of Dentistry, Yangsan, 3Department of Dental Hygiene, Cheongju University College of Health and Medical Sciences, Cheongju, Korea

Received: March 8, 2019; Revised: April 26, 2019; Accepted: May 13, 2019

Abstract

Objectives: The community water fluoridation program was implemented in 1998 in Jinju city. The aimof the present study was to evaluate the effect of this 17-year community water fluoridation program oncaries reduction in permanent teeth. Methods: Evaluation surveys were conducted in 2015 on subjects aged 8, 10, 12, and 15 years in Jinjucity. The examined dental data were compared with that of subjects of the same age groups living in themedium-sized cities from the 6th Korea National Health and Nutrition Examination Survey (KNHANES)(2013-2015). The total number of subjects was 1,026 in Jinju city and 453 in the control group. Theodds ratio of caries experience rate and untreated tooth rate on permanent teeth in Jinju city comparedto control group was estimated based on the differences in DMF and untreated teeth rates after adjusting for gender, age, and mean number of fissure-sealed teeth. The effect of community water fluoridation program on caries reduction in permanent teeth was estimated by the differences in adjusted DMFTscores between the program and control groups. Results: The odds ratio of caries experience rate and untreated tooth rate on permanent teeth in Jinjucity compared to control group was estimated as 0.501 and 0.178, respectively. The effect of community water fluoridation program on caries reduction in permanent teeth was estimated as 40.0%. Conclusions: These results suggested that the effect of community water fluoridation program on caries reduction in permanent teeth in Jinju city was so high that similar programs should be developed inother regions in Korea.

Keywords: Community water fluoridation, Dental caries, Fluoride, Permanent teeth, Prevention, Reduction