Preservation of primary dentition is important for orofacial development as it helps to maintain the space for eruption of permanent teeth, aids in masticatory functions, phonation and swallowing. The main objectives of endodontic treatment is removal of diseased pulp tissue, resolution of the periapical pathology and achieving physiological resorption of the primary roots so as to permit normal eruption of the succedaneous tooth. To avoid untoward changes when primary teeth are replaced by permanent teeth, resorption of the material used in primary teeth root canal filling should occur at the same rate as root resorption. An effective root canal material plays the major role in achieving the fluid impervious seal by defending against variant microflora and maintaining the tooth in function for longer duration.Various root canal filling materials are used to preserve a pulpally involved carious primary tooth. But there is no single material so far available to fulfill all the requirements of an ideal root canal filling material for a primary tooth. Aim: To compare and evaluate the postoperative (clinical and radiographical) success of three obturating materials in pulpectomies performed in primary molar teeth of children in the age group of 4 to 7 years at 1,3-,6- and 9-month intervals. Method: The pulpectomy procedure was performed under rubber dam isolation after administration of local anaesthesia and Group I was obturated with ZOE, Group II with Endoflas and Group III with Metapex. Postoperative radiographs were taken immediately after obturation. All obturated teeth were restored with Type II GIC. Crown preparation was done and preformed stainlesssteel crown was luted using GICT ype I cement immediately. Postoperative radiograph was taken.The teeth were evaluated at 1, 3, 6 and 9 months postoperatively using clinical and radiographic criteria.The collected data was statistically analysed. Results: The success of treatment was determined after a period of 9 months postoperatively. The overall success rate between the three groups was statistically significant (p < 0.05). Group II (Endoflas) showed 95 % overall success followed by Group I (ZOE) and Group III (Metapex) which showed 90% and 70% overall success. Conclusion: The study concluded that Endoflas can be considered to be an effective obturating material in primary teeth due to its highest overall success, clinically and radiographically at a 9 month follow up period. Also, it possess most of the ideal requirements of an effective obturating material in primary teeth.However,Metapex possess the least success rate due to its fast resorptive process (Hollow - tube effect) than the physiological resorption of the root.