The purpose of this study was to compare the degree of microleakage of Glass-Ionomer root canal sealer possessed several enviable properties with that of the other sealers and to evaluate clinical performance.
One hundred twenty single-rooted teeth were used in this experiment. The teeth were cleaned mechanically and immersed for 24 hours in 5.25% sodium hypochlorite and clinical crowns then were removed. After the root canals were instrumented using a
step-back technique, one hundred twenty single-rooted teeth were divided into five groups of 24 in each.
Group 1 : Tubli-Seal(Kerr Co., MI, U.S.A/ZOE-based), lateral condensation
Group 2 : Sealapex(Kerr/Sybron, Romulus, MI/ Ca(OH)2-based), lateral condensation
Group 3 : AH 26(De Trey Co., Zurich Switzerland/Resin-based), lateral condensation
Group 4 : Ketac-Endo(ESPE GMBH & CO. KG Seefeld:oberbay, Germany/Glass Ionomer Cement-based), lateral condensation
Control group : no sealer, lateral condensation
And then, the root canals were obturated by lateral condensation technique with gutta-percha and experimental sealers. The control group were obturated without sealer. The teeth were placed in a vacuum chamber for 15 minutes and immersed 2%
methylene
blue under vacuum for 15 minutes. The teeth were passively stained for 1 week and 2 weeks and were cleared and evaluated for linear dye leakage using Tool maker's microscope(×200).
@ES The results were as follows:
@EN 1. There were statistically significant differences in the degree of dye penetration between the control group and experimental groups(p<0.05).
2. In the experimental groups. Sealapex(1.2871±0.9180mm) exhibited the lowest mean value of dye penetration. Followed by Ketac-Endo(1.4432±0.8082mm), AH 26(1.5030±1.0292mm) (p>0.05).
3. There were statistically significant differences in the variation of microleakage between 1 week and 2 weeks in Tubli-Seal and Sealapex groups (p<0.05).
4. The degree of dye penetration of all groups were increased as the time elapsed and AH 26 showed the lowest variation(+0.11) and Tubli-Seal(+1.03) showed the highest variation(p<0.001).
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