Background: Custom cast post core has been regarded as a gold standard in post and core restoration. The present study was conducted to compare the fracture resistance of endodontically treated teeth with and without post-reinforcement. Materials & Methods: 30 maxillary central incisor were grouped into 6 groups each consisting of 5 specimens. Group I specimens were not subjected to any restorative treatment. Group II specimens were endodontically treated and crowned. Groups III and IV were restored with custom cast post and core. Specimens of groups V and VI were treated with prefabricated titanium post and composite core. Specimens of groups III and V were restored with porcelain-fused metal (PFM) crown having 2 mm ferrule. Specimens of groups IV and VI were restored with PFM crown having no ferrule. All the specimens were subjected to load. Results: Fracture resistance (N) in group I was 1024.8, in group II was 658.2, group III was 1316.8, group IV was 1012.4, group V was 740.2 and in group VI was 702.4. The difference was significant (P< 0.05). The most common mode of fracture was coronal 1/3 root fracture seen in 3 each in group IV, V and VI, crown fracture 3 in group I, crown fracture (2) and coronal 1/3 root fracture (2) in group II. The difference was significant (P< 0.04). Conclusion: Endodontically treated teeth restored with custom cast post core were as strong as the untreated group.
Key words: Custom cast post core, Endodontically, Porcelain-fused metal.