To evaluate the efficacy of irrigating solutions EDTA, MTAD and Maleic acid in smear layer removal, using Navitips and conventional needles. 48 extracted mandibular premolar teeth were divided into 3 groups and two subgroups. They were prepared by ProTaper Ni Ti instrument system to an apical size of F3. The final irrigation in each group was done as follows, Group 1A- 17% EDTA (Control Group) with conventional needle, Group 1B-17% EDTA with Navitip, Group 2A- MTAD with conventional needle, Group 2B- MTAD with Navitip, Group 3A- 7% Maleic acid with conventional needle, Group 3B- 7% Maleic acid with Navitip. After final rinse with the test irrigants, the specimens were dried and prepared for SEM examination. In Group 2, MTAD was used, most root canal surfaces in coronal, middle and apical thirds had no smear layer. The coronal and middle third areas showed complete smear layer removal in 88 % and 75 % of samples, respectively, using both Conventional needle and Navitip. In apical third 63 % of samples, using Navitip and 50 % of samples, using Conventional needle, showed complete smear layer removal. Group 2 (MTAD) showed the best result for the removal of smear layer in all the areas. Group 3 (Maleic acid) and Group 2 (MTAD) are equally effective in the apical third, without much significant difference. Navitips are effective in the removal of smear layer than the Conventional needles, but there was no significant difference between them.