A Study of Fracture Resistance on Strengthening of Endodontically Treated Premolar Teeth Restored with Different Posts Cemented with Composite Material: An in vitro Study

Comparing and evaluating the fracture load of different posts and composite core of root canal-treated teeth is the aim of this study.Endodontically treated teeth were restored with zirconia (ZP), prefabricated glass fiber (GFP), and carbon (CP) post systems.Single root eighty maxillary 2 nd premolars were chosen, and they received endodontic therapy.Depending on the kind of length used, the teeth were randomly assigned to four groups (n = 20), each of which was then divided into two subgroups: subgroup 1/2 removed the one-half sealing material, and subgroup 2/3 removed two-thirds of the sealing material.Prefabricated glass fiber posts were used in Group I, zirconia posts were used in Group II, carbon posts were used in Group III, and direct composite resin restoration without a post was used in Group IV (control).Samples were loaded into a universal testing machine, and statistical interpretations were made.Fracture resistance was noted.The results of the fracture one-way ANOVA were used to examine the load, and then multiple comparisons with the Bonferroni test with a threshold significant value (=0.05).The prefabricated glass fiber post group, the carbon post, the zirconia post, and the control group all had lower fracture loads than the zirconia post.