Effect of the ferrule on fracture resistance of teeth restored with prefabricted posts and composite cores

摘要

BackgroundThe ferrule effect in root treated teeth requiring cast posts and cores has been shown to greatly improve fracture resistance. Studies have also shown that in the case of a cast post and core, the longer the ferrule, the greater the fracture resistance. However few studies have considered the effect of different ferrule designs on prefabricated post and composite core systems.