Cuspal flexure, depth-of-cure, and bond integrity of bulk-fill composites.

Purpose: Evaluate cuspal flexure caused by polymerization shrinkage stress, bond integrity, and depth-of-cure of bulk-fill composites.

Methods: Twenty-eight extracted permanent molars were mounted in stainless steel rings. Slot-shaped Class II mesio-occlusal-distal preparations (four mm deep) were restored with Filtek Supreme Ultra (control; two two-mm increments) and bulk-fill composites (Tetric EvoCeram, Venus, Filtek Bulk Fill).

Low social support is associated with an increased risk of postoperative delirium.

Study Objective: To examine the predictive value of social support in postoperative delirium.

Design: Prospective observational study.

Setting: Postoperative recovery room and orthopedic surgery department.