This study used Prevotella nigrescens to evaluate the sealing ability of Geristore, Super-EBA, and ProRoot when used as root-end filling materials. One hundred single-canal, extracted, human teeth were cleaned and shaped with Gates-Glidden burs and .04 Taper (ProFile Series 29) rotary instruments. The root-ends were resected, and a 3-mm deep root-end preparation was made with ultrasonic tips. A...

o t bstract he purpose of this study was to evaluate the antibacerial activity of leachable components of selected rootnd filling materials: amalgam, ProRoot MTA (mineral rioxide aggregate), Intermediate Restorative Material IRM), Super Bond C&B, Geristore, Dyract, Clearfil APX omposite with SE Bond, or Protect Bond. The direct ontact test (DCT) with Staphylococcus aureus, Enterooccus faecalis,...