우식성 열구에 적용한 치면열구전색제의 미세누출과 침투도에 관한 연구

Abstract

The purpose of this study is to compare microleakage and penetration depths of sealants applied in carious and sound fissures. Extracted premolars(n=80) were divided into 4 groups according to caries status. 1, sound; 2, stained; 3, initial caries; 4, enamel caries. Sealants were applied to the occlusal groove as per manufacturers' instructions, and specimens were thermocycled, stained, sectioned, and examined for microleakage and penetration ability. The results of the present study are as follow: 1. It showed significantly higher microleakage scores in group Ⅰ than group Ⅱ, Ⅲ, Ⅳ(p<0.05), but no significant difference was found between group Ⅱ, Ⅲ, Ⅳ(p>0.05). 2. It showed significantly higher penetration scores in group IV (p<0.05), followed by group I, II, III, but no significant difference was found between group I, II, III(p>0.05). Based on the results of present study, when the borders of the fissure sealant are on carious enamel, a significantly higher microleakage must be expected. It is considered that depth of enamel caries in the fissure should be taken into account when applying a fissure sealant.