Microseal^®을 이용한 근관충전법의 근관폐쇄능력 평가
EVALUATION OF THE SEALING ABILITY OF Microseal^® OBTURATION TECHNIQUE
오태석, 유현미, 황혜경,
소속 상세정보
오태석 ( ) - 삼성의료원 치과진료부 보존과
유현미 ( ) - 삼성의료원 치과진료부 보존과
황혜경 ( ) - 삼성의료원 치과진료부 보존과
KMID : 0362319980230020682
Abstract
The purpose of this study was to evaluate the sealing ability of the Microseale^(®), which was new obturation system made by Tycom company, U.S.A.
Forty-five extracted single-rooted human teeth were resected at cemento-enamel junction and divided three groups. All canals were prepared using Profile system, and then each group was obturated by lateral condensation technique (group 1), vertical condensation technique (group 2) and Microseal^(®) condensation technique (group 3) with root canal sealer.
Teeth were immersed in resorcinol-formaldehyde resin for 5 days at 4℃ and the resin was allowded to polymerize completely for 4 days at room temperature. Teeth were resected horizontally at 1 mm (level 1), 2 mm (level II) , 3 mm (level III) from the anatomical root apex using low speed microtome and examined with Image analyzer (IBASR, Zeiss co., Germany.) at X25 magnification.
The gab between the canal wall and the filling material, which was filled with the resin, was measured at each of the three levels. Each ratio of leakage was expressed percentage by calculating the ratio of the area of the resin to the total area of the canal and was analyzed statistically (one-way ANOVA) .
The results were as follows:
1. The mean ratio of leakage (%) was 6.46 % at group 1, 3.06 % at group 2, 11.27 % at group 3.
2. When evaluating the-ratio of leakage at the three levels, there was levelⅠ> level Ⅱ> level Ⅲ in all groups. Especially, the difference between level I and level Ⅲ was statistically significant (p<0.05).
3. When evaluating the ratio of leakage at the three groups, there was group 3> group 1) group 2 at all levels. Especially the difference between group 2 and group 3 was statistically significant (p<0.05).
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