Paradental (mandibular inflammatory buccal) cyst

Abstract

The paradental cyst is commonly misinterpreted when associated with atypical clinical and radiographic characteristics, in turn causing diagnostic problems. For this reason, the study of the differential diagnosis of this lesion has become extremely important. In addition, the correlation of clinical, histologic, and radiographic findings are also of great value in obtaining accurate diagnoses. The minor variations in the clinical appearance of paradental cysts make it feasible to consider the two main groups of cysts separately: those associated with 1st and 2nd permanent molars of the mandible and those associated with the 3rd mandibular molar. Moreover, this distinction in localization may well dictate the necessary treatment. Bearing in mind the minor clinical variations, the present article aims to discuss the differential diagnosis of this lesion and its different possible treatments by presenting a case report to illustrate the findings.

Fig. 1

Expansion of the vestibular cortical bone

Fig. 2

Presence of radiolucency in the distal follicular space of the first permanent molar

Fig. 3

Coronal CT. Hypodense area in the vestibular region of the molar

Fig. 4

Axial CT. a Hypodense area in the vestibular region of molar; b expansion of the vestibular cortical bone; c periodontal ligament space and the lamina dura were intact and continuous around the root

Fig. 5

Three-dimensional CT. Expansion of the vestibular bone

Fig. 6

Histologic exam (HE, 400x). Non-keratinized stratified squamous epithelium, showing hyperplasia. Connective tissue presenting hyperemic vessels, areas of hemorrhage, and inflammatory mononuclear cell infiltrates