The purpose of this electrochemical study was to determine and compare the sealing effect of three commonly used calcium hydroxide-based sealers (Sealapex, Apexit, and CRCS) with that of Roth 801 which is a ZOE-based sealer.
64 single rooted teeth were used in this experiment. After removing the crown, the teeth were devided into 4 groups of 15 in each and obturated with gutta-percha and experimental sealers. 4 teeth were as controls(2 positive and 2 negative).
@ES The results were as follows:
@EN 1. During the observation period, all sealers showed varying degree of microleakage.
2. The mea leakage currents according to the electrochemical study of each group sowed 0.418±0.006mV for Roth 801, 2.03±0.035mV for Sealapex, 3.33±0.069mV for Apxit and 6.48±0.097mV for CRCS group. The positive control group showed 600mV.
3. There were statistically significant difference in mean leakage among experimental groups. ZOE-typed Roth 801 sealer was the lowest, and Selalapex, Apexit, CRCS group in that order showed increased leakage(P<0.05).
4. Roth 801, Sealapex and Apexit group showed increasing leakage with time, but CRCS group showed stable or decreasing leakage tendency.
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