Using dye penetration method we investigated apical leakage of root canals, obturated with different gutta-percha techniques. Forty single root extracted human teeth were selected and randomly divided into four groups a) lateral condensation of gutta-percha, b) vertical condensation of gutta-percha with Touch`n Heat, c) Thermafil and d) Obtura II. Sealers AH26 was used for all groups. The apical leakage was measured using the dye penetration method. Scaling of dye penetration was in value of millimeter. Results were further analyzed by Games-Howell test, Dunett-t test and Kruskal-Wallis test. A significant difference in apical leakage was shown in group filled with Touch`n Heat (P0.05) Under the conditions of this study the results suggested that lateral condensation Thermafil and Obtura II may produce acceptable obturation of root canals.
Key words: apical leakage, lateral condensation, root canal obturation
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