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Prevalence of Four Canals in Mandibular First Molars in Libyan Sub-population: An InVivo Study

Abdalgader I. Alhozgi, Farzeen Tanwir, Ebtesam Omar, Syeda Natasha Zaidi, Saima Mazhar, Abdulrhman Hatiwsh, Rmdan Alfied, Ahmed Kaddi, Abubker Deeb

The aim of this in vivo study was to assess the prevalence of four root canals in root-treated mandibular first molars in Libyan population. One eighty-five root canal treated permanent mandibular first molars was selected. The teeth were examined clinically and radio graphically. The results showed that 73.0% of the examined teeth had three root canals (two mesial and one distal), 26.5% had four root canals (two mesial and two distal) and 0.5% had five root canals (three mesial and two distal). Most of teeth had two roots (2.16%), except three teeth of males (3.16%) had three roots and one tooth of female had three roots (1.11%). Therefore, the conclusion is that the prevalence of four root canals in mandibular first molar is greater, almost one quarter in this sample of Libyan population.