Effect of ferrule on the fracture resistance of mandibular premolars with prefabricated posts and cores.
Ae-Ra KimHyun-Pil LimHong-So YangSang-Won ParkPublished in: The journal of advanced prosthodontics (2017)
Fracture resistance of ETT depends on the length of the ferrule, as shown by the significantly increased fracture resistance in the 2 mm ferrule group (F2) compared to the groups with shorter ferrule lengths (F0, F1) and without post (NP).