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Analysis reveals microgap differences in hydrophilic versus hydrophobic obturation systems, indicating sealing efficacy.
The microgap formation associated with hydrophilic and hydrophobic root canal obturation systems is of interest. Hence, thirty extracted human single-rooted teeth were randomly divided into two groups (n=15 each): Group I - obturated (Resilon with Epiphany sealer) and Group II - obturated hydrophobic system (Gutta-percha with AH Plus sealer). After obturation, the samples and microgaps were evaluated using scanning electron microscopy (SEM) at 2000x magnification. Group I (hydrophilic) showed a significantly lower mean microgap of 2.36 ± 0.52 μm, while Group II (hydrophobic) exhibited a higher mean microgap of 5.81 ± 0.89 μm. Thus, hydrophilic obturation systems showed superior sealing ability with minimal microgap formation compared to hydrophobic systems.
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Behera et al. (2025) studied this question.
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