Evaluation of occlusal fracture resistance of three different core materials using the Nayyar core technique.

Aim: The aim and purpose of this study was to determine the occlusal fracture resistance of three core buildup materials using the Nayyar technique.

Materials And Methods: Thirty human extracted maxillary premolars were used for the study. The test samples were decoronated till the cementoenamel junction (CEJ) and proper cleaning and shaping was done with protaper niti files till the F3.