Endodontically-Treated Tooth Restoration

The endodontically treated tooth require restoration due to the loss of the tooth structure, altered physical characteristics, dehydration, altered esthetic of the residual. Esthetic, structural and functional rehabilitation of a pulpless tooth is important to promote a successful restorative outcome.
Posts and cores are used in endodontically treated, weakened teeth as a basis for prosthetic crowns. The primary reason for using a post is to retain a core with the objective to restore the missing coronal tooth structure . Of the amount post systems available, custom metal posts or pre-fabricated fiber-reinforced composite resin (FRC) posts are more recommended for clinical use. FRC posts have mechanical anisotropic properties. The longevity and strength of a restoration is related on the post material, the length of the root, the …show more content…
Others have shown that a higher static force is needed to fracture teeth with cast posts than those with FRC posts, although in both situations, the load exceeded the average masticator y force. Fractures in teeth with FRC posts usually occurred in the cervical area, while custom metal posts were associated with root fractures.
It should be noted that glass ionomer cements were used for cementing posts that had low friction at the try-in stage. Post and cores fabricated from high-gold-content alloys had a significantly higher survival probability com- pared with posts fabricated from a semi-precious alloy.
Direct post and core restorations with pre-fabricated fiber-reinforced resin posts became popular because of their lower modulus of elasticity compared with metal posts, decreasing the risk for root fracture. The selection of the better post system for each case is influenced by the treatment plan to restore function and aesthetics, persisting tooth structure, post design and mechanical