Aim: to investigate the quality of root fillings in experimental internal resorptive areas of root canals filled with different gutta–percha obturation techniques. Material and methods: Root canals of sixty maxillary incisor teeth were filled using one of six different techniques: Thermafil, JS Quick–Fill, LC, and Obtura. Following root canal filling, the teeth were stored in an incubator at 370 C and 100% humidity for 7 days. After which the roots were divided at the level of the previous section and each root surface was photographed. Image analysis program was used to calculate the percentage of gutta–percha, sealer, and void in the internal resorptive cavities. All measurements were analysed statistically using One–way anova and unpaired‘t’ tests. Results: Obtura showed maximum sealing ability of experimental resorptive cavity followed by JS Quickfill, Thermafil, where as lateral condensation showed least in coronal section as well as apical section. By applying One Way Annova F Test, a high significance difference was observed at 0.1 % of significance for gutta percha, sealer, and voids in both coronal and apical section in Obtura, Thermafil, JS Quick Fill, and Lateral Condenation. Conclusion: Obtura showed the maximum sealing followed by JS Quickfill and Thermafil, whereas Lateral Condensation showed the least sealing ability.