Background: Endodontic treatment saves the tooth and restoration of endodontically treated tooth restores the tooth hack to function. The present study was conducted to assess fracture strength of different post and core system. Materials & Methods: 60 first premolars were divided into three groups of 20 samples. In group I, teeth inserted with prefabricated carbon posts, in group II, teeth inserted with prefabricated zirconia posts and in group III, teeth inserted with prefabricated ever Stick posts. Compressive load required to fracture the tooth was measured in all groups. Results: The mean compressive strength in group I was 610.2 MPa, in group II was 728.5 MPa and in group III was 526.4 MPa. The difference was significant (P< 0.05). Conclusion: Zirconia posts exhibited maximum fracture resistance as compared to carbon posts and ever Stick posts. Key words: Carbon posts, Ever Stick posts, Zirconia posts