Abstract
Paradental cyst is an inflammatory odontogenic cyst linked with mandibular molars. The occurrence rate of the lesion ranges from 0.9 to 4.7% suggesting its infrequency. The histopathologic findings in hematoxylin and eosin routine staining are not pathognomonic, and the correlation with clinical and imaging characteristics is essential to establish the final diagnosis. The periapical radiographs show a unilocular radiolucency on the distal or disto/buccal aspect of the involved tooth, however, the lesion can superimpose over the roots and mimic periapical pathology. We report the imaging features of a rare bilateral paradental cyst with an emphasis on magnetic resonance imaging and cone beam computed tomography to help a correct identification and characterization of the cyst and to reliably establish the diagnosis.
Highlights
Paradental cyst is an inflammatory odontogenic cyst in the mandibular area, with a rare occurrence of 0.9–4.7% among odontogenic cysts, developing laterally with the cementoenamel junction of a totally or partially erupted molar.[1,2] It was first described by Main in 1970[3] and Craig suggested the name paradental cyst.[4]The World Health Organization (WHO) has defined the paradental cyst as a cyst occurring near to the cervical margin of the lateral aspect of a root as a consequence of an inflammatory process in a periodontal pocket
Distinctive form of the paradental cyst arises on the buccal and distal aspects of erupted mandibular molars where there is a history of pericoronitis.[5]
It has been reported that the radiographic image of the paradental cyst involved the first or second molar and is always characterized by a well‐defined radiolucency associated with the roots on the buccal aspect.[1,2,7]
Summary
Antonione S. Pinto, Andre L. Costa1, Moara C. Pinto2, Paulo H. Braz‐Silva3, Mari E. Moraes4, Sérgio L. Lopes4 Department of Morphology, Federal University of Ceara, Fortaleza, 1Department of Orthodontics, UNICID (University of São Paulo City), 3Department of Stomatology, School of Dentistry, USP (University of São Paulo), São Paulo, 2Division of Histology and Embryology, School of Biomedicine, Federal University of Piaui, Parnaiba, Piauí, 4Department of Diagnosis and Surgery, Institute of Science and Technology, UNESP – Univ Estadual Paulista, São José dos Campos, Brazil
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