AIM: This study assessed the effectiveness of 5 different irrigant activation systems on canal cleanliness and removal smear layer from root canals. METHODS: A total 110 mandibular premolars with straight were assigned to five groups (n = 20): conventional needle irrigation, passive ultrasonic activation, sonic EndoActivator, negative apical pressure EndoVac (EV), or EDDY system, besides a cont...

PURPOSE To use angioscopy to evaluate and compare the amount of residual thrombus and endoluminal wall damage in hemodialysis grafts after percutaneous thrombectomy procedures. MATERIALS AND METHODS Thirty-nine thrombectomy and angioscopy procedures were performed in 35 patients. Percutaneous thrombectomy methods included eight different mechanical thrombectomy devices and the "lyse and wait"...

INTRODUCTION Several irrigation techniques have been recently introduced with the main objective of improving root canal disinfection. This in vitro study aimed at comparing the intracanal bacterial reduction promoted by chemomechanical preparation with 3 different irrigation techniques. METHODS Root canals from extracted teeth were contaminated with Enterococcus faecalis ATCC 29212 for 7 day...

PURPOSE To retrospectively review the complications reported during percutaneous thrombectomy procedures performed on polytetrafluoroethylene hemodialysis grafts. MATERIALS AND METHODS A retrospective review revealed that 935 percutaneous thrombectomy procedures were performed at our institution between January 1993 and June 2001. The type and number of procedures include: Arrow PTD (527), pu...