AIM To evaluate the anatomical features of C-shaped canal systems in Chinese mandibular second molars by cone-beam computed tomography (CBCT). METHODOLOGY A total of 608 patients of Chinese descent with healthy, well-developed mandibular second molars were enrolled. These patients were referred to the West China Hospital of Stomatology and required radiographic examination by CBCT as part of ...

introduction: the purpose of this in vitro study was to compare the accuracy of working length determination using the apex locator versus conventional radiography in c-shaped canals. methods and materials: after confirming the actual c-shaped anatomy using cone-beam computed tomography (cbct), 22 extracted c-shaped mandibular second molars were selected and decoronated at the cemento-enamel ju...

The aim & objective of this study is to investigate the frequency and type of C-shaped root canals in mandibular second molars of the UAE population. The teeth with C-shaped canals were classified using Melton’s classification. Method: Ninety-six mandibular second molars of patients aged between 20-45years old, scheduled for endodontic treatment, were examined over a 2-year period in the Endodo...

OBJECTIVES The purpose of this study was to investigate the incidence of root fusion and C-shaped root canals in maxillary molars, and to classify the types of C-shaped canal by analyzing cone-beam computed tomography (CBCT) in a Korean population. MATERIALS AND METHODS Digitized CBCT images from 911 subjects were obtained in Chosun University Dental Hospital between February 2010 and July 20...

BACKGROUND The purpose of this study was to compare the shaping ability of the ProTaper Universal (PTU; Dentsply Maillefer, Ballaigues, Switzerland), WaveOne (WO; Dentsply Maillefer) and ProTaper Next (PTN; Dentsply Maillefer) in simulated L-shaped and S-shaped root canals respectively. METHODS 30 simulated L-shaped and 30 simulated S-shaped root canals in resin blocks were employed and rando...

This case report describes a unique C-shaped mandibular second premolar with four canals and three apical foramina and its endodontic management with the aid of cone-beam computer tomography (CBCT). C-shaped root canal morphology with four canals was identified under a dental operating microscope. A CBCT scan was taken to evaluate the aberrant root canal anatomy and devise a better instrumentat...

OBJECTIVE Because of the great challenges in the diagnosis and treatment of "C" configuration and lack of any systematic information about its occurrence, the purpose of the present study is to determine the prevalence of C shaped root canals in Iranian population. METHODOLOGY An exhaustive search was undertaken to identify published and unpublished researches related to the C-shaped canals b...

C-shaped canals are mostly found in mandibular second molars. Studies have shown that frequency ranges from 2.7 to 31%. This study was undertaken to provide further knowledge of the distribution of such canal anatomy, by determining the frequency of C-shaped canals in a sample representing the Lebanese population. Ninety-four mandibular second molars with scheduled endodontic treatment were exa...

Unusual canal morphologies hamper the success rate of endodont ic t reatment. C shaped canal configurations are the most commonly faced anatomic variations. Inability to identify and debride the C shaped canal may lead to endodontic failure. Presence of a C shaped canal presents a great challenge to the dentist. The presence of transverse anastomoses, lateral canals and apical deltas make it di...