Table of Contents
International Scholarly Research Notices
Volume 2014, Article ID 405601, 5 pages
Research Article

Incidence of Radix Entomolaris in Mandibular First Molars in Palestinian Population: A Clinical Investigation

1Department of Conservative Dentistry, Arab American University, Jenin, Palestine
2Department of Pediatric Dentistry, Arab American University, Jenin, Palestine

Received 13 September 2014; Accepted 17 November 2014; Published 24 November 2014

Academic Editor: Hee-Jin Kim

Copyright © 2014 Raed Mukhaimer and Zafer Azizi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Purpose. The aim of this investigation was to evaluate clinically the percentage of permanent mandibular first molar teeth with three roots amongst Palestinian population. Patients and Methods. Three hundred twenty-two mandibular first molars from 185 females and 137 males scheduled for root canal treatment at the Dental Center of the Arab American University were examined over a 2-year period. The incidence of a third root revealed by periapical radiographs and the comparison of the occurrence between males and females and between the right and left sides of the mandible were recorded. Statistical Analysis. It was performed using the chi-square test with a significant level set at %. Results. Of the 322 treated mandibular first molars, twelve teeth were found to have a third root with an overall incidence being 3.73%. More teeth with a third root were treated on the right side of the mandible compared to the left side. Conclusion. The incidence of a third root in Palestinian population was within the range of previous reports from the Middle East but considerably lower than the percentage from the Far East.