EFFECT OF FLUORIDE VARNISH ON DEVELOPMENT OF ARTIFICIAL CARIES

Cho, Nan-Ju; Lee, Sang-Ho; Lee, Nan-Young

Journal of the Korean Academy of Pediatric Dentistry 2007;34(4):613-622.
Published online November 30, 2007.

EFFECT OF FLUORIDE VARNISH ON DEVELOPMENT OF ARTIFICIAL CARIES

Nan-Ju Cho, Sang-Ho Lee, Nan-Young Lee

Department of Pediatric Dentistry, College of Dentistry, Chosun University

불소 바니쉬가 인공 우식 병소의 발생에 미치는 영향

조난주, 이상호, 이난영

조선대학교 치과대학 소아치과학교실

Correspondence: Nan-Young Lee, Tel: 82-62-220-3860, Fax: 82-62-225-8240, Email: nandent@chosun.ac.kr

Abstract

he purpose of this study was to evaluate the effect of fluoride varnish on prevention of enamel demineralization. Eighty bovine enamel blocks were divided randomly into 4 groups of 20 specimens: Group I served as the control with no topical application of fluoride. Group II was treated with APF gel for 4 minutes. Group III was treated with Fluor Protector^®. Group IVV was treated with CavityShield^TM. After 24 hours of treatment, samples were brushed with a soft bristled tooth brush to stimulate normal mechanical wear of varnish. Early caries lesions were produced by placing each specimen into demineralization solution at pH 4.0 for 48 hours. Then the optical density of the lesions was measured by light fluorescence induced by plasma light and the surface microhardness were measured by the vicker's hardness test. The results were as follows: 1. The optical densities of group III, IV were significantly higher than that of group II, but no significant difference was noted between group III and IV. 2. The surface microhardness of group IV was the highest, followed by group III, II, and I(p<0.05). 3. There were no significant differences between group III and IV in optical density. However, the surface microhardness of group IV was significantly higher than that of group III. The results of present study indicate that the fluoride varnish is more effective than APF gel for prevention of dental caries.

Key Words: Fluoride varnish, Acidulated phosphate fluoride gel, Light fluorescence, Microhardness