![]() ![]() Results: No significant difference was found between the surface changes and debris/smear layer scores based on root canal preparation technique and irrigant solution (P>0.05). All data were analyzed statistically using the Kruskal-Wallis and Mann-Whitney U tests. Surface change, the debris/smear layer remaining after instrumentation/irrigation, and the tubular penetration of root canal sealers were evaluated using SEM. The roots were randomly distributed into four groups, according to instrumentation techniques and irrigation solutions employed. Materials and Methods: The widest roots of 120 recently extracted human primary second molars were used. Objectives: To evaluate canal surface changes and the remaining debris/smear after canal preparation, and the subsequent penetration of root canal sealers into dentinal tubules in extracted primary second molars, using scanning electron microscopy (SEM). ![]()
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