C shaped root canals in mandibular second molars in UAE nationals

ABSTRACT

The aim and 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. 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 Endodontic Department, Tawam Hospital, Dental Center, UAE. C-shaped canals were detected and counted. Two detection procedures, radiography and clinical examination, were used. Thirty three exhibited C-shaped canals [34.37%]. Eleven molars presented a continuous C-shaped canal [11.4%], category I. Seven [7.2%] had a semicolon shape with a mesial canal located on the buccal or lingual side depending on where the fusion occurred, category II. In many instances, this canal swung back and merged with the distal canal, thus yielding a single foramen, in the other cases, it remained distinct with its own portal of exit. Fifteen [15.6%] were considered as category III Three for subdivision I, two for subdivision II, and ten for subdivision III. The frequency of C-shaped root canals in mandibular second molars is high in the UAE patients