The objective of this study was to compare the adaptation of mechanically softened gutta-percha to the root canal wall in the presence and absence of smear layer. The root canals of 20 freshly extracted human maxillary incisors were cleaned and shaped. Prior to obturation, 10 root canals were irrigated with 20 ml of 50% citric acid followed by 20 ml of 5.25% sodium hypochlorite. All canals were...

INTRODUCTION Oval-shaped root canals might represent a great challenge for proper disinfection. This study compared the capability of a newly developed instrument, the self-adjusting file (SAF), and rotary nickel-titanium (NiTi) instrumentation to eliminate Enterococcus faecalis populations from long oval root canals of extracted human teeth. As a secondary purpose, the ability of a modificatio...

The aim of the present microtomographic study was to investigate the quality of root canal filling and the voids formation in canals of extracted teeth instrumented with a simultaneous technique and filled with two different methods. Twenty-four single-rooted teeth were assigned to two experimental groups (no. = 12); canals were shaped with NiTi rotary files, irrigated with NaOCl and filled eit...

intRODuCtiOn The self Adjusting File (sAF*) system is a new approach to shaping root canal systems, which does not use solid metal files. (Fig 1). The sAF relies on the gentle abrasive action of a flexible mesh lattice to prepare the root canal walls. The sAF offers: 1) the ability to instrument and prepare complex-shaped root canal anatomies; 2) the capability to provide continuous and efficie...

INTRODUCTION: The aim of this study was to assess the shaping potential of a novel nickeltitanium instrument, the self-adjusting file (SAF), in long oval root canals in distal roots in mandibular molars. METHODS: Twenty mandibular molars with long oval distal root canals were selected and scanned preoperatively and postoperatively by using micro-computed tomography at an original resolution of ...

OBJECTIVES The aim of this study was to compare the canal debridement capabilities of three single file systems, ProTaper, and K-files in oval-shaped canals. MATERIALS AND METHODS Seventy-five extracted human mandibular central incisors with oval-shaped root canals were selected. A radiopaque contrast medium (Metapex; Meta Biomed Co. Ltd., Chungcheongbuk-do, Korea) was introduced into the can...

INTRODUCTION The purpose of this study was to determine whether final-year undergraduate dental students achieved better shaping outcomes using the new ProTaper Next (PTN; Dentsply Sirona, Ballaigues, Switzerland) system to prepare root canals for the first time compared with the existing ProTaper Universal (PTU, Dentsply Sirona) system on which they had trained. A secondary aim was to explore ...

Abstract Background Shaping ability of a file plays an important role during instrumentation in endodontic treatment. This study aimed to compare the shaping OneShape (OS), Hero Shaper (HS), and Revo-S (RS) instruments simulated L-shaped canals. Methods Forty-eight canals were prepared apical size 25 using OS, HS, RS (all from Micro-Mega SA, Besançon, France), (n = 16 canals/group) systems. The...

C-shaped canal is one of the most difficult situations with which dentist confronted during endodontic treatment teeth. Recognition unusual variation in configuration critical because it has been established that root a single tapering and apical foramen exception rather than rule. The early recognition these configurations facilitates cleaning, shaping obturation system. “C” configuration, an ...