Apical Leakage of Five Root Canal Sealers After One Year of Storage

A fluid transport model study was used to compare the sealing ability of five root canal sealers (AH26, AH Plus, Apexit, Diaket, and Ketac-Endo) on 60 single-rooted teeth after 1 yr of storage. The root canals were prepared with Gates Glidden drills by using a step-back technique before lateral condensation of gutta-percha with the tested sealers. The specimens were stored in saline solution for 1 yr at 37°C. The leakage was measured by the movement of an air bubble in a capillary glass tube connected to the experimental root section. Apexit (0.490 μl) leaked significantly more than AH Plus (0.378 μl) and Ketac-Endo (0.357 μl), whereas AH26 (0.390 μl) and Diaket (0.429 μl) showed no significant difference from either Apexit or from AH Plus and Keto-Endo.