불화나트륨 함유 접착테잎의 치아침식증 예방효과

Abstract

The purpose of this in vitro study was to evaluate the effect of fluoride containing adhesive film on prevention of dental erosion. Eighty bovine enamel blocks were divided randomly into 4 groups : (1) CavityShieldTM applied, (2) Fluor ProtectorTM applied, (3) 5% Fluoride tape applied, (4) 10% Fluoride tape applied. Enamel erosion were produced by placing each specimen into coka-cola solution pH 4.2 for 5 days. Then lesion of the surface microhardness were measured by the Vicker's hardness test and the erosion depth were measured by polarizing light microscope and the surfaces of each treated specimens were observed with SEM. The results of the present study were as follows :

1. After 1, 3, and 5 days of immersion in erosive solution, the surface microhardness value of the experimental group with fluoride agent was higher than that of control group (p<0.05). 2. The surface microhardness value of each control group (with fluoride application) was decreased as time goes by. After 5 days, the group with fluoride tape(group 4) showed the highest value, followed by group 3, 1 and 2 (p<0.05). But there were no significant differences between group 1 and 3. 3. At day 1, 2 and 3, the group with 10% fluoride tape (group 4) showed higher surface microhardenss value than the group with 5% fluoride tape(group 3) (p<0.05). 4. The difference of depth on erosive lesion between the control group and experimental group was the highest in group 1 (1.16um), followed by group 4 (1.07um), group 3 (0.88um) and group 2(0.86um). There was a significant difference between the group 1 and 2. 5. In SEM examination, each surface of control group showed general rough, lava-like appearance and creater-like lesion with crack, but the experimental showed regular, smooth appearance.

Based on these results, fluoride tape showed enhanced preventive effect on dental erosion than flouride varnish. So, it is thought to be used for self application as well as professional fluoride application .