Endocrowns versus post-core retained crowns for restoration of compromised mandibular molars: an in vitro study.

Purpose: To compare the failure loads of teeth restored with endocrowns, post-core retained crowns without a ferrule, and post-core retained crowns with a ferrule provided after crown lengthening.

Materials And Methods: 27 mandibular molar teeth were collected, sectioned 1.5 mm above the cementoenamel junction (CEJ), and endodontically treated.