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Effects of Application of Sealant and Fluoride Gel Application Program for Elementary School Children in Laos for 3 Years
Int J Clin Prev Dent 2018;14(1):81-88
Published online March 31, 2018;
© 2018 International Journal of Clinical Preventive Dentistry.

Nitthasack Phommavongsa1, Woo-Ryung Park2, Na-Young Kim2, Eun-Joo Na3, Mi-Hae Yun3, Seung-Chul Shin4, Ja-Won Cho4

1Department of Pediatric Dentistry, Faculty of Dentistry, University of Health Science, Vientiane, Laos, 2Department of Oral Health, Graduate School, Dankook University, Cheonan, 3Department of Dental Hygiene, Daejeon Health Institute of Technology, Daejeon, 4Department of Preventive Dentistry, College of Dentistry, Dankook University, Cheonan, Korea
Correspondence to: Ja-Won Cho
Department of Preventive Dentistry, College of Dentistry, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan31116, Korea. Tel: +82-41-550-1953, Fax: +82-41-553- 6582, E-mail:
Received January 19, 2018; Revised February 24, 2018; Accepted February 25, 2018.
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.
Objective: This study conducted oral health program with the fluoride topical and sealant application in elementary school in Laos for 3 years in order to estimate the effect of prevention for the program on school oral health in Laos.Methods: Three primary schools were selected as an experimental group and the comparison group. 1.23% APF gel was applied 3 times every year and sealant was applied on the permanent 1st Molar for grade 1 to 5 in experimental group and caries experience was examined by use of DSRL camera photo taking and image analysis technique. The data was compared with the experimental and comparison group for 3 years.Results: Fluoride topical application and sealant in children with mixed dentition showed no difference in dft and dfs index (p>0.05). and also not so much different between two as DMFT or DMFS index in permanent dentition (p>0.05). Caries prevention effect was estimated as showed 41.4% in third grade, 15.0% in forth grade, 20.9% in fifth grade in DMFT index and the prevention effect of DMFS index was 56.1% in third grade, 38.2% in forth grade and 31.9% in fifth grade. Conclusion: It would be a more effective for prevention for the caries in case of the continuous performing the fluoride and sealant application as one of the school oral health program in Laos.
Keywords : pit and fissure sealants, topical fluorides, oral health
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December 2018, 14 (4)