Microleakage of various dental materials of class I cavity : in vitro study
Authors
이선희
Issue Date
1995
Description
치의학과/석사
Abstract
[한글]
변연누출은 상실된 치아경조직 수복재료와 치질간의 피할 수 없는 문제점이며 임상적으로 쉽게 알 수 없으나 치수에 대한 자극 및 2차 우식증 등을 유발 시킬 수 있으므로 수복술식에 있어 중요한 문제이다. 이에 저자는 임상에서 현재 많이 사용되고 있는 재료들의
미세변연누출도를 평가하고자, 발거된 치아 175개를 사용하여 아말감, 광중합 복합레진, Glass ionomer cement, IRM, Fermit-N등의 재료를 충전하여 1000회의 온도 변화 후 methylene blue dye를 이용한 색소 침투법으로 변연누출을 측정하였다. 각 충전물당 중심과 margin부의 두 군데에서 변연누출을 관찰하여 다음과 같은 결과를 얻었기에 보고하는 바이다.
1. 광중합 레진 에서 가장 낮은 변연누출을 보였으며 아말감, IRM, Fermit-N, glass ionomer cement의 순서로 변연누출이 증가하였으며 (SAS-6.0 system), 재료간의 통계학적 유의차가 있었다.(Kruskal-Wallis analysis, p<0.05)
Microleakage is a problem of all filling materials of costed teeth structure and is clinically undetectable. Because marginal leakage may be responsible for pulp irritation, pulp inflammation, necrosis and recurrent caries, it is essential to
prevent and control it.
For the evaluations of microleakage of various class I filling materials, 175 extracted teeth were filled with amalgam, light curing composite resin, glass ienomer cement, IRM and Fermit-N. After thermocycling, speciemens were placed in 1% methylene blue dye solution far 24 hours in an incubator set 37℃. The teeth were sectioned at filling body center and margin and degree of dye penetration was observed with a stereomicroscope.
The following results were obtained.
1. Light curved composite resin has the excellent result and microleakage Is increased in the order of amalgam, IRM, Fermit-N, glass ionomer cement(SAS-6.0 system) and there was a ststistically significancy in marginal leakage for each filling materials.(Kruskal-Wallis analysis, P<0.05)
2. Microleakage of the center and margin was statistically
insignificant(Mann-Whitney analysis P<O.05)
3. There was less microleakage for amalgam than light cured composite resin but was statistically insignificant (Mann-Whitney analysis, P<O.05) and also showed less marginal leakage for Hermit-N compared to glass ionomer cement but also was statistically insignificant.(Mann-Whitney analysis, P<O.05)