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Case Reports in Pathology
Volume 2011, Article ID 159501, 3 pages
Case Report

Odontogenic Keratocyst Looks Can Be Deceptive, Causing Endodontic Misdiagnosis

1Department of Oral Medicine and Radiology, Yenepoya Dental College, Yenepoya University, Karnataka, Mangalore 575018, India
2Department of Conservative Dentistry and Endodontics, Century International Institute of Dental Sciences and Research Centre, Poinachi, Kerala, Kasargod 671541, India
3Department of Oral and Maxillofacial Surgery, Yenepoya Dental College, Yenepoya University, Karnataka, Mangalore 575018, India

Received 14 July 2011; Accepted 24 August 2011

Academic Editors: A. Pich and H. Yaacob

Copyright © 2011 K. M. Veena et al. 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.


Odontogenic keratocyst (OKC) is the cyst arising from the cell rests of dental lamina. It can occur anywhere in the jaw, but commonly seen in the posterior part of the mandible. Radiographically, most OKCs are unilocular when presented at the periapex and can be mistaken for radicular or lateral periodontal cyst. When the cyst is multilocular and located at the molar ramus area, it may be confused to ameloblastoma. Lots of cases have been reported in the literature where OKC is associated with the nonvital tooth. So trauma could be one of the reasons in inducing this cyst. In our case, it was in the anterior region at the periapex of nonvital tooth having traumatic occlusion. Hence, the diagnosis of radicular cyst was made and endodontic treatment was done.