An vitro study of the microleakage of syringe deliveryiodoform-calcium hydroxide as a root canal sealer.

Objective: To evatuate the sealing ability of syringe delivery iodoform-calcium hydroxide as a root canal sealer. Methods: Fifty extracted single root human teeth were instrumented and randomly divided into two groups. The experiment root canals were filled with syringe delivery iodoform-calcium hydroxide paste and a single master gutta-percha(GP)corn, while the other canals were filled with zinc oxide-eugenol paste and GP as control. Apical microleakage was determined using dye infiltration and measured by astereomicroscope. Results: The mean leakage is 0.608mm in experiment group and 1.236mm in control group, showing significant difference in the t test. Conclusions: Syringe delivery iodoform-calcium hydroxide has better root canal seal than zinc oxide-eugenol paste. [