Radicular Cyst

Radicular cyst is the most common cyst in the jaw, accounting for 7%~54% of all permanent dentition cysts. Most radicular cysts have no obvious clinical symptoms, and most are accidentally found during radiological examinations for other reasons. Radicular cysts originate from the hyperplasia of the Hertwig epithelial root sheath (also known as Malassez-ERM epithelial cells) [1–3]. There are inflammation, migration and infiltration of inflammatory cells, such as leukocytes and monocytes, so it is suggested that caries may be the most important cause of this disease. In the case of symptomatic inflammation in the pulp of deciduous teeth, endodontic therapy shall be used as much as possible to preserve teeth, preferably until they are naturally replaced by permanent teeth. Complications of this treatment may include cyst formation, delayed absorption of deciduous teeth or permanent enamel coloboma [4, 5]. Developing cysts can lead to permanent tooth germ displacement, eruption disorder and even partial destruction. The developing cyst is not easy to detect and can reach a considerable size. The general method of operation is complete cyst wall excision.