Introduction: The paradental cyst is an inflammatory odontogenic cyst usually associated with distal and buccal aspect of partially impacted mandibular third molars. An associated history of pericoronitis, as a consequence of an inflammatory process in the periodontal pocket has been suggested as the route of inflammation. The pathogenesis of these cysts is most likely to be originated from the inflammatory proliferation of epithelial rests of Malassez. This cyst has been under reported due to the lack of sufficient clinical information to establish the diagnosis and many may have been misdiagnosed as dentigerous cysts, pericoronitis, lateral radicular cysts or inflamed dental follicles.
Case Report: We present a case of a 36-year-old male presented to the department of oral and maxillofacial surgery with a complaint of discomfort seen in relation to distal aspect of mandibular third molar for the last six months. The presence of swelling in the buccal and distal aspect, radiolucency seen distally of mandibular third molar with intact lamina dura and unwidened periodontal ligament space, positive response to vitality tests and classic histopathologic findings confirmed the diagnosis of paradental cyst.
Conclusion: A proper insight or knowledge into the clinicoradiographical presentation and histological findings would help us to differentiate the inflammatory paradental cyst from other odontogenic cysts.

Keywords: Epithelial rests, Odontogenic, Paradental cyst, Pericoronitis