Background: The study was to evaluate the eff ect of Wave One fi le system s and One Shape fi le system on the dentine thickness in the apical area of the root canal. Materials and Methods: In this study, a total of 40 freshly extracted human mandibular fi rst molars were taken. All the teeth were categorized into two groups namely Group I: Wave One, Group II: One Shape. Mesio buccal canal of m...

INTRODUCTION The aim of the study was to evaluate the cleanliness of the walls of root canals with incomplete development of root, whose lumen was rinsed with 2% chlorhexidine solution during mechanical preparation. MATERIAL AND METHODS Use was made of 8 maxillary premolar teeth with a single root canal and with incomplete development of the root apex (the teeth were removed during the growin...

OBJECTIVE We sought to measure the residual dentin thickness (RDT) in the mesial roots of mandibular molars after instrumentation with Lightspeed and Gates-Glidden rotary instruments. Study design Thirty extracted, untreated human mesial roots of mandibular molars were separated from the distal roots and embedded in clear polyester resin. The roots were cut horizontally at 1, 4, and 7 mm short ...

AIM To assess ex vivo the accuracy of various electronic apex locators in locating the apical terminus of root-end resected teeth. METHODOLOGY Ninety extracted human posterior teeth (182 root canals) were prepared to a minimum size of 40 and filled with gutta-percha and sealer. After resection of the apical 3 mm of the root, the root canal filling was removed using HERO rotary instruments. Th...

AIM The aim of this study was to determine the root canal area before and after the instrumentation 1 mm short of the apical foramen by clinical and cone beam computed tomography (CBCT) methods, and to evaluate the cleanliness of the apical region in mesiodistal flattened teeth by using optical microscopy. MATERIALS AND METHODS Forty-two human single-canal mandibular incisors were instrumente...

AIM To compare automated and manual instrumentation techniques for removing filling material from root canal walls during root canal retreatment. METHODOLOGY One hundred extracted human single-rooted teeth were root filled and stored. Specimens were divided into two groups: group A, Endofill plus gutta-percha; group B, Sealer 26 plus gutta-percha. The filling material was removed using the fo...

Objectives This study evaluated the amount of remaining root canal filling materials after retreatment procedures performed by undergraduate students using manual, rotary, and reciprocating techniques through micro-computed tomographic analysis. The incidence of instrument fracture and the instrumentation time were also evaluated. Materials and Methods Thirty maxillary single rooted teeth wer...