Fares Al Rawashdeh*


The radicular cyst is the most common cyst of the oral and maxillofacial region. It is usually caused by pulpal necrosis which is secondary to trauma or dental caries. The radicular cyst is usually asymptomatic, but a secondary infection can occur and cause pain. Radicular cyst is also known as periapical cyst, apical periodontal cyst or dental cyst. On radiographs, it appears as radiolucency around the apex of a tooth's root. These cysts may persist even after extraction of offending tooth; these cysts are called residual cysts. The vast majority of the radicular cysts are small, but they can reach a large and even a massive size. In such cases, the cyst may cause displacement of the surrounding structures. In the posterior part of the maxilla, a massive radicular cyst can cause displacement of the floor of maxillary sinus. In this situation, a careful review of plain radiographs and/or CT images is necessary to determine the origin of the lesion, whether it is from the maxillary sinus or from the maxilla. This article reports the case of a massive radicular cyst that caused displacement the floor of the maxillary sinus, the diagnostic approach and the surgical intervention. The article had been given the approval of the ethical committee of the hospital and an informed consent of the patient was taken.

Keywords: Maxillary Sinus; Maxilla; Radicular Cyst; Inflammatory Cyst; Massive lesion.

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