Root fracture and the design of prefabricated posts

Reattachment of fractured anterior tooth fragment: An approach in endo esthetic view

“…12 Restoration with cast metal posts can cause wedging forces coronally that may result in irreversible failure because of fracture of an already weakened root. 13 Whereas fiber-reinforced composite resin post has demonstrated negligible root fracture. Studies have indicated that dentinbonded resin post-core restorations provide significantly resistance to fracture than cemented custom cast posts and cores.…”

Single visit reattachment of fractured incisal edges using different post systems

“…Restoration with cast metal posts can cause wedging forces coronally resulting in irreversible failure. 18 Studies have indicated that dentin bonded resin post and core system provide significantly less resistance to …”

Crowns and extra-coronal restorations: Endodontic considerations: the pulp, the root-treated tooth and the crown

“…But the retention they provide is often by active engagement of elastic dentine, producing stress concentration around the threads, and increasing the risk of root fracture. 38 This is especially so if posts are selftapping, and is amplified if the post also has a wedge-like, tapered design. Popular commercial threaded posts include:…”