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J Korean Acad Pediatr Dent. 2001;28(1): 159-165.
김광현, 한세현, 김종철
서울대학교 치과대학 소아치과학교실 및 치학연구소
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Fluoride has been used widely for the prevention of dental caries. Many dental professionals applicated acidulated phosphate fluoride(APF) gel for the purpose of prevention of dental caries in recent years. However, the topical application of fluoride varnish is growing and getting much recognition in many parts of Europe and Scandinavia. The main purpose of this study was to compare the effect of fluoride varnish and acidulated phosphate fluoride gel on artificial caries lesion. The artificial caries lesion was caused on the sound bovine enamel and divided 60 specimens into three groups each containing twenty for the purpose of study. No application was done on group 1, which acted as control group. Group 2 was treated with the topical application of fluoride varnish and removed after 1 hour Group 3 was treated with APF gel and removed after a minute. The cycle of remineralization/demineralization went on in vitro and the microhardness was measured for the each group after 5 and 15days. The following results were obtained : 1. According to the results after 5 days, the microhardness of groups 2 and 3 were significantly higher than group 1, the control group(p<0.05) Similar results was also noticed after 15 days(p<0.05) 2. In comparison of microhardness between groups 2 and 3 after 5days, there were no significant differences between them. The results after 15 days was also similar 3. Much difference in microhardness wasn't present in groups 2 and 3 after 5 and 15days. However, the microhardness of the group 1 dropped significantly in the result of 15 days and 5 days(p<0.05).
Keywords: Fluoride varnish | APF gel | Artificial caries lesion | Microhardness
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