INTRODUCTION The aim of this study was to describe the canal shaping properties of a novel nickel-titanium instrument, the self-adjusting file (SAF), in maxillary molars. METHODS Twenty maxillary molars were scanned by using micro-computed tomography at 20-μm resolution. Canals were shaped with the SAF, which was operated with continuous irrigation in a handpiece that provided an in-and-out v...

A 61-year old Chinese female was referred from a general private practitioner for persistent buccal abscess after completion of root canal treatment tooth 37. On clinical examination, 37 presented with metal-ceramic crown (CMC) 2mm gingival recession noted at the region. The overlying amalgam core overhanging on distal and grade 2 mobility. CMC have no contact point distal. Tooth not tender to ...

OBJECTIVE The purposes of this retrospective study were to represent a newly designed theoretical model for determining orifice shape and morphologic properties of mandibular premolars and to correlate these findings with each other. MATERIALS AND METHODS A total of 287 mandibular premolar images obtained from 88 patients by cone-beam computed tomography were included in this study. The measu...

The aim of this study was to evaluate the antibacterial activity of 2% iodine potassium iodide (IKI) used as a final rinse after the cleaning and shaping procedures in mesial root canals of mandibular molars infected with Enterococcus faecalis. Seventy two mandibular first molars were used. The root canals were infected with Enterococcus faecalisfor 30 days. After the infection procedures, the ...

Biofilms are multicellular communities which composed of prokaryotic and/or eukaryotic cells embedded in matrix. More than 500 bacterial species have been identified dental biofilms, pose a harmful risk to health. Isthmus is ribbon-shaped communication between two root canals contains pulp tissue.

INTRODUCTION The complex anatomy of the root canal system has been shown to limit the penetration of irrigating solutions into the apical third; hence, the aim of this study was to determine whether the use of a patency file is related to the presence of a radiopaque irrigating solution in the apical third of human root canals after using passive ultrasonic activation in vivo. METHODS Forty h...

Introduction: Pulpectomy helps in preserving a pulpally involved primary tooth by extirpating the diseased pulp associated with microorganism and debris from canal obturating an antibacterial resorbable filling material Aim: To evaluate compare obturation quality interms of underfilling,optimal filling, over fillings, voids single rooted teeth amongst 4 different techniques using cone beam comp...

PURPOSE This study used cone-beam computed tomography (CBCT) to characterize mandibular molar root and canal morphology and its variability in Belgian and Chilean population samples. MATERIALS AND METHODS We analyzed the CBCT images of 515 mandibular molars (257 from Belgium and 258 from Chile). Molars meeting the inclusion criteria were analyzed to determine (1) the number of roots; (2) the ...