Effect of two different types of fibers on the fracture resistance of endodontically treated molars restored with composite resin.

Purpose: To compare the in vitro fracture resistance of endodontically treated molars with mesio-occluso-distal (MOD) cavities restored with two different types of fibers.

Materials And Methods: Sixty extracted human mandibular first molars were selected for the study and randomly assigned to six groups (n = 10). Group 1 served as the control.